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NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)

6 System Operation and Maintenance

Issue 03 (2020-01-10)

196

Step 6

Reinstall the liquid pipe NTC temperature sensor.

Step 7

Perform a leakage test with nitrogen again.

Step 8

After checking that the smart cooling product does not leak, vacuumize the smart cooling
product and charge refrigerant.

----End

6.5.6 Replacing the Threaded Filter Dryer

Prerequisites



The filter dryer needs to be replaced.



A spare threaded filter dryer of the same model is available and functional.



Tools: refrigerant retrieval device (configured based on local conditions), Phillips
screwdriver, nitrogen cylinder, refrigerant tank, vacuum pump, pressure gauge, leather
hose, protective gloves, two 27# adjustable wrenches, 36# wrench



Preparation: Power off the indoor unit and reclaim all refrigerant from the system.

Context

Figure 6-12

shows the position of the filter dryer.

Figure 6-12

Position of the filter dryer

(1) Liquid pipe NTC temperature sensor

(2) Pipe nut

(3) Adjustable nut

(4) Filter dryer nut

(5) Filter dryer

(6) Hold hoop

Summary of Contents for NetCol5000-A021

Page 1: ...NetCol5000 A021 In row Air Cooled Smart Cooling Product User Manual 208 V Issue 03 Date 2020 01 10 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...tomer All or part of the products services and features described in this document may not be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this document is subject to c...

Page 3: ...tric heater and humidifier Intended Audience This document is intended for Sales personnel Technical support personnel System engineers Hardware installation personnel Commissioning engineers Data configuration engineers Maintenance personnel Symbol Conventions The symbols that may be found in this document are defined in the following table Symbol Description Indicates a hazard with a high level ...

Page 4: ...l injury Supplements the important information in the main text NOTE is used to address information not related to personal injury equipment damage and environment deterioration Change History Changes between document issues are cumulative The latest document issue contains all the changes made in earlier issues Issue 03 2020 01 10 Updated the safety information Issue 02 2019 01 15 Updated the man...

Page 5: ...oor Unit Components 12 2 3 Controller 13 2 3 1 Appearance and Ports 13 2 3 2 Function and Features 16 2 4 Monitoring System 17 2 5 Application Environment 19 2 6 Technical Specifications 21 3 Installation Guide 23 3 1 Installation Preparations 23 3 1 1 Preparing Tools 23 3 1 2 Material Preparations 26 3 1 2 1 Optional Refrigerant R410A 26 3 1 2 2 Optional Refrigerant Oil 28 3 1 2 3 Optional Oil Tr...

Page 6: ...nnecting Drainpipes 62 3 10 3 Optional Connect the Water Inlet Pipe to the Electrode Humidifier 65 3 10 4 Leak Checking 67 3 11 Connecting Cables 68 3 11 1 Port for Connecting the Power Cable 68 3 11 2 Connecting the Indoor Unit Power Cable 70 3 11 3 Connecting the Power Cable to the Outdoor Unit 73 3 11 4 Connecting Signal Cables 74 3 11 4 1 Preparations Before Cable Connections 74 3 11 4 2 Conne...

Page 7: ...16 4 4 2 5 Calibrating a Sensor 117 4 4 2 6 Calibrating the Screen 118 4 5 FAQ 120 4 5 1 How to Perform Quick Settings 120 4 5 2 How to Set the Language Date or Time 120 4 5 3 How to Change a Password 121 4 5 4 Restoring Factory Settings 122 4 5 5 How to Troubleshoot the Fault When the System Is in Upgrade Mode 124 4 5 6 How to Silence the Buzzer 124 4 5 7 How to Manually Clear Alarms 125 4 5 8 Ho...

Page 8: ... 6 5 Parts Replacement 185 6 5 1 Replacing the Air Filter 185 6 5 2 Replacing the Indoor Fan 186 6 5 3 Replacing the Differential Pressure Switch 188 6 5 4 Replacing the Compressor 189 6 5 5 Replacing the Welded Filter Dryer 193 6 5 6 Replacing the Threaded Filter Dryer 196 6 5 7 Replacing the Welded Filter Dryer with the Threaded Filter Dryer 199 6 5 8 Optional Replacing the Humidifier Cylinder 2...

Page 9: ...lling operating or maintaining the equipment The safety instructions in this document are only supplements to local laws and regulations Huawei will not be liable for any consequences of the following circumstances Operation beyond the conditions specified in this document Installation or use in environments which are not specified in relevant international or national standards Unauthorized modif...

Page 10: ...ng a conductor surface or terminal measure the contact point voltage and ensure that there is no risk of electric shock After installing the equipment remove idle packing materials such as cartons foam plastics and cable ties from the equipment area In the case of a fire immediately leave the building or the equipment area and turn on the fire alarm bell or make an emergency call Do not enter the ...

Page 11: ...ent with scratches cannot be exposed to an outdoor environment for a long period of time Before operations ensure that the equipment is firmly secured to the floor or other solid objects such as a wall or an installation rack Do not use water to clean electrical components inside or outside of a cabinet Do not change the structure or installation sequence of equipment without permission Do not tou...

Page 12: ... and are clear of the sources and degree of various potential hazards in equipment installation operation maintenance Trained personnel personnel who are technically trained have required experience are aware of possible hazards on themselves in certain operations and are able to take protective measures to minimize the hazards on themselves and other people Operators operation personnel who may c...

Page 13: ...ing cables ensure that a distance of at least 30 mm exists between the cables and heat generating components or areas This prevents damage to the insulation layer of the cables Do not route cables behind the air intake and exhaust vents of the equipment Ensure that cables meet the VW 1 flame spread rating requirements Bind cables of the same type together When routing cables of different types ens...

Page 14: ...Environment Requirements To prevent fire due to high temperature ensure that the ventilation vents or heat dissipation system are not blocked when the equipment is running Install the equipment in an area far away from liquids Do not install it under areas prone to condensation such as under water pipes and air exhaust vents or areas prone to water leakage such as air conditioner vents ventilation...

Page 15: ... warn away irrelevant personnel Carry the operation machinery and tools properly to prevent them from falling off and causing injuries Personnel involving working at heights are not allowed to throw objects from the height to the ground or vice versa Objects should be transported by tough slings hanging baskets highline trolleys or cranes Ensure that guard rails and warning signs are set at the ed...

Page 16: ...that it is intact and confirm its load bearing capacity Do not overload it Ensure that the ladder is securely positioned The recommended angle for a ladder against the floor is 75 degrees as shown in the following figure An angle rule can be used to measure the angle Ensure that the wider end of the ladder is at the bottom or protective measures have been taken at the bottom to prevent the ladder ...

Page 17: ...be aware of unstable or heavy objects on the cabinet Be cautious to avoid injury when moving heavy objects When moving the equipment by hand wear protective gloves to prevent injuries Move or lift the equipment by holding its handles or lower edges Do not hold the handles of modules such as power supply units fans and boards that are installed in the equipment because they cannot support the weigh...

Page 18: ... to high pressure components such as the compressor and refrigerant pipe to prevent the refrigerant system from being cracked or exploded due to misoperations Refrigerant Frostbite Refrigerant leakage may cause frostbite Take protective measures for example wear antifreeze gloves when handling refrigerant Storage and Recycling Do not store devices near a heat source or under direct sunshine Keep d...

Page 19: ... Manual 208 V 2 Product Description Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 11 2 Product Description 2 1 Model Description Figure 2 1 shows the designation explanation for the NetCol5000 A Figure 2 1 Designation explanation for the NetCol5000 A ...

Page 20: ...ric heater optional electrode humidifier optional water pump display panel and so on Compressor The DC variable frequency compressor provides the cooling capacity ranging from 20 to 100 to meet partial load requirements Oil separator It is an oil gas separator that separates lubricant from the exhaust of the compressor and brings back the separated lubricant to the compressor EC fan The EC fan imp...

Page 21: ...ectrode humidifier The electrode humidifier provides stepless adjustment of humidification capacity and precise control of indoor humidity Water pump The water pump provides power for top drainage with a maximum lift of 4 meters Display panel The 7 inch display panel with a true color touchscreen provides a user friendly interface for you to perform query setting monitoring and maintenance 2 3 Con...

Page 22: ...Co Ltd 14 Figure 2 3 Display panel 1 Indicator 2 Display panel Table 2 1 Indicator and buzzer status description Alarm Status Indicator Buzzer The device is operating properly or a warning is generated Green No buzzing There is an unacknowledged major alarm Yellow Intermittent buzzing There is an unacknowledged critical alarm Red Constant buzzing ...

Page 23: ... WiFi module locally connect to the smart cooling product over the Service Expert app Obtain the initial startup password during deployment View or obtain the running information about the smart cooling product during preventive maintenance Applicable to V200R001C20 and later versions NOTE Only Huawei service engineers or authorized service engineers are allowed to use the WiFi module To ensure se...

Page 24: ...dity filter normal blocked and fan normal faulty Telecontrol smart cooling product startup shutdown Teleadjusting temperature humidity and alarm threshold Remote management You can monitor manage and upgrade one or more smart cooling products using the remote management function provided by Huawei Faults and alarms are recorded and stored Up to 1500 historical fault and alarm records can be stored...

Page 25: ...r RS485 connection and supports the MAC ModBus protocol for FE connection Key smart cooling product parameters including but not limited to the temperatures and humidity of the inlet and outlet air power supply status and operating status of the smart cooling product fan status and alarms can be uploaded to the monitoring system Up to 32 smart cooling products can be teamworked over a controller a...

Page 26: ...n row Air Cooled Smart Cooling Product User Manual 208 V 2 Product Description Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 18 Figure 2 6 FE monitoring network diagram Figure 2 7 CAN teamwork network diagram ...

Page 27: ...he water quality requirements Environmental Specifications Table 2 3 Environmental specifications Item Specifications Operating temperature 18 C to 45 C Operating humidity 20 RH to 80 RH Storage temperature 40 C to 70 C Storage humidity 5 RH to 95 RH non condensing Ambient temperature Connecting with NetCol500 A0265S11E0 20 C to 45 C Protection level Indoor unit IP20 Outdoor unit IPX5 Altitude 0 m...

Page 28: ...e humidity might be relatively high It has no relationship with product quality and you are recommended to install a dehumidifier Table 2 5 Installation requirements Item Specifications Door Width not smaller than 0 9 m height not smaller than 2 3 m Floor Bearing capacity not smaller than 350 kg m2 for raised floors height not smaller than 250 mm Installation mode Installed on a concrete floor bas...

Page 29: ... regulations use the residual current circuit breaker RCCB that is not sensitive to the single phase DC pulse and transient current pulse Note If some conditions are not met please contact Huawei technical support Water Quality Requirements If the inlet water contains large granules install a water filtering device at the inlet port to prevent pipe blockage Table 2 6 Water quality requirements Ite...

Page 30: ...ooled Refrigerant R410A Air supply mode Horizontal flow Maximum current indoor unit current outdoor unit current 28 A 48 A Power supply The rated mains input voltage must be three phase five wire 3 Ph N PE 208 V AC 187 V to 229 V in line voltage and 60 3 Hz in frequency If the front end voltage fluctuation exceeds this range you are advised to add a voltage regulator Otherwise the smart cooling pr...

Page 31: ... install the NetCol5000 A correctly as required 3 1 1 Preparing Tools Table 3 1 to Table 3 5 list the tools for installing the NetCol5000 A Add or delete tools as required Table 3 1 General tools Appearance Specifications and Name Adjustable wrench 12 19 Phillips screwdriver M4 M6 M8 Flat head screwdriver M3 M4 Socket wrench 10 mm 18 mm Torque wrench 28 mm Solid wrench 12 13 18 Hex key 6 mm Right ...

Page 32: ...npacking tools Appearance Specifications and Name Pallet Jack Diesel pallet truck Lifting rope bearing capacity 400 kg Lever bearing capacity 400 kg Table 3 3 Pipe installation tools Appearance Specifications and Name Cutter Water pipe thread sealanta Welding torch 5 silver solder Oxygen Acetylene Hot melt tool for rigid pipes Nitrogen Pipe bending tool N A N A N A N A N A N A a For equipment with...

Page 33: ...e maximum tolerated pressure is greater than 3 MPa Conforms to JB T7311 2008 engineering mechanical the anaerobic adhesive application technology specification Table 3 4 Electrical installation tools Appearance Specifications and Name ESD gloves Insulation gloves Wire stripper Polyvinyl chloride PVC insulation tape Heat gun Crimping tool N A N A N A N A Table 3 5 Commissioning tools Appearance Spe...

Page 34: ... h is recommended Absolute vacuum 60 Pa c Dry nitrogen d A reducing valve is required at the outlet of the nitrogen cylinder and the reducing valve range 4 0 MPa 3 1 2 Material Preparations Materials are classified to Huawei provided self purchased and onsite prepared materials which are marked as mandatory optional and engineering purchasing in this document Mandatory materials that are provided ...

Page 35: ...onds to the measured external surface temperature according to Table 3 6 and calculate the deviation from the measured internal pressure If the deviation is more than 0 2 MPa the refrigerant is not qualified and should be replaced Figure 3 1 Checking refrigerant Table 3 6 Mapping between temperatures and R410A saturation pressure Temperature C Saturation Pressure Surface Pressure MPa Temperature C...

Page 36: ...A 3 1 2 2 Optional Refrigerant Oil The recommended refrigerant oil is RL32H Emkarate You can purchase it from Huawei or another vendor The refrigerant oil purchased from another vendor should be confirmed by Huawei 3 1 2 3 Optional Oil Trap and Inverted Trap The operating pressure of the copper pipe oil trap and inverted trap should be greater than 4 5 MPa Figure 3 2 Oil trap and inverted traps un...

Page 37: ...he pipe ends Pipe bends not marked in the figure are 90 The bend tolerance is 1 mm 3 1 2 4 Humidifier Water Inlet Pipe Humidifier water inlet pipes are not required by the models without heating or humidification functions The humidifier water inlet pipe can be connected using a hose or a rigid pipe Figure 3 3 Connecting a water inlet pipe 1 Connector with inner screw threads G 1 2 inch delivered ...

Page 38: ...configured with a humidifier A drainpipe can be connected in two ways Top pipe routing For the connection method of the water pump drainpipe see method A in Figure 3 4 Bottom pipe routing See methods B and C in Figure 3 4 Determine a pipe connection method based on site pipe materials Figure 3 4 Connecting a drainpipe 1 Rigid pipe 1 2 inch BSPT external thread made of PP R C PVC or other materials...

Page 39: ...ch bending point in turning sections 3 1 2 7 Cable Specifications The onsite ground resistance must be less than 0 1 Ω The fireproof level of the cable must be at least VB Table 3 8 lists specifications of power cables and cables to the host The cables must be protected by a protective tube when connecting the power cables and the external signal cables Table 3 8 Cable specifications Application S...

Page 40: ...mm Black Outdoor unit Signal cable to the outdoor unit optional Symmetry Twist Cable 100 ohm SFTP CAT5E 0 53 mm 24 AWG 4 Pairs Black Outdoor Cable The length is determined by site survey 1 PCS Power cable to the outdoor unit optional Electronic Electric Cable 600 V 1000 V ZA RVV 5 x 2 5 mm2 Black 5Cores Red Yellow Green Blue Black 27 A Outdoor Cable CE Do not connect the neutral wire to the outdoo...

Page 41: ...ection 1 0 mm2 5 A Tin Plating Insertion Depth 12 mm Red Delivered with the accessories 3 1 2 8 Engineering Procurement Water Softener If the water hardness exceeds 100 mg L CaCO3 install water purification equipment to reduce scaling and ensure the stable running of the system The detailed specifications are as follows Table 3 9 Water softener specifications Item Specifications Water flow 0 5 m3 ...

Page 42: ...oor unit in the corner of a room or at the end of a long and narrow room During the NetCol5000 A operation all doors and windows of the equipment room should be closed to reduce the additional load of the NetCol5000 A Take appropriate thermal insulation and antifreeze measures for outdoor water pipes to avoid poor drainage and insufficient water supply caused by freezing Figure 3 6 Maintenance spa...

Page 43: ...or In the figure D is the depth of the cabinet It can be 1100 mm or 1200 mm 3 1 5 Installation Layout Principles Layout principles for installing the NetCol5000 A are as follows If the outdoor unit is placed higher than the indoor unit the maximum vertical distance between them is 20 m To ensure the NetCol5000 A reliability make an oil trap every 5 m to 6 m along pipes in the vertical direction If...

Page 44: ...sign of a tilt indicating that the scale of the pipe tilting is at least 1 200 The pipe tilting direction should be consistent with the hypotenuse of the right triangle If the indoor unit is placed higher than or equal to the outdoor unit inverted traps or oil traps are not needed Protective tubes should be installed for wall and floor through pipes The spacing between the protective tubes and pip...

Page 45: ...uting pipes from the top 1 Inverted traps 2 Oil traps 3 Tilted gas pipe 4 Tilted liquid pipe 3 2 Unpacking Procedure Step 1 Inspect the outer packing for signs of damage If any damage is found contact the shipping company immediately Step 2 Unpack the product 1 Remove the straps top cover outer packing cushioning materials and then plastic film as shown in Figure 3 10 ...

Page 46: ...hes If any damage is found contact the shipping company immediately Step 3 Check the type and quantity of fittings against the packing list If fittings are missing or inconsistent with those in the packing list record the information and contact your local Huawei office immediately End 3 3 Checking Nitrogen Pressure Procedure Step 1 Open the rear door Step 2 Unfasten the rotating baffle plates in ...

Page 47: ...emoving air filters Step 3 Take out the desiccant bag Step 4 Check whether the needle valve bonnets shown in Figure 3 12 exist If they do not exist contact Huawei technical support If they exist remove each valve bonnet and use it to press the valve plugs in turn If air is exhausted the system is working properly If no air is exhausted contact Huawei technical support ...

Page 48: ...lves 1 Low pressure needle valve 2 Liquid pipe needle valve 3 Discharge pipe needle valve End 3 4 Removing the Cabinet Sheet Metal Fasteners Use a 10 socket wrench to remove the eight M6x16 bolts securing the sheet metal fasteners to the cabinet and use an 18 socket wrench to remove the four M12x35 bolts securing the sheet metal fasteners to the pallet as shown in Figure 3 13 ...

Page 49: ...opyright Huawei Technologies Co Ltd 41 Figure 3 13 Removing bolts from the cabinet sheet metal fasteners 3 5 Installing the Cabinet Transport Tool Prerequisites The cabinet has been removed from the pallet Context At least two persons are assigned to transport the cabinet Figure 3 14 shows the cabinet transport tool ...

Page 50: ...le aligned with the cabinet mounting hole during installation Procedure Step 1 Remove the cover bolts from one end using a Phillips screwdriver and take down the entire cover as shown in Figure 3 15 Figure 3 15 Removing cover bolts Secure the transport tool to the cabinet through the hole near the cabinet door Step 2 Wrench an anchor bolt clockwise to elevate a cabinet insert the end without a cov...

Page 51: ...8x50 bolts as shown by 1 in Figure 3 17 Figure 3 17 Reinstalling the cover on a transport tool Secure the transport tool to the cabinet through the hole near the cabinet door Step 4 Secure the transport tool to the cabinet using M6x16 bolts as shown by 2 in Figure 3 17 Step 5 Wrench an anchor bolt anticlockwise to lower a cabinet move the cabinet to the installation place using the transport tool ...

Page 52: ...tener installed for transport protection must be removed Otherwise the equipment may fail to work properly Procedure Step 1 Open the door lock using a key and open the rear door Step 2 Loosen the two transport fixing bolts at the bottom corners of the compressor using a 13 socket wrench take out the sheet metal fasteners under the bolts and then tighten the bolts to a recommended torque of 13 N m ...

Page 53: ...Technologies Co Ltd 45 Figure 3 18 Removing sheet metal fasteners from a compressor Step 3 Remove the liquid level detector transport sheet metal fastener 1 Open the front door use a Phillips screwdriver to remove the four M4x10 screws from the cover and remove the cover as shown in Figure 3 19 Figure 3 19 Removing a water pan cover ...

Page 54: ...the liquid level detector transport sheet metal fastener and remove the transport sheet metal fastener as shown in Figure 3 20 Figure 3 20 Removing a liquid level detector transport sheet metal fastener 3 Connect the interconnection terminal of the low liquid level detector as shown in Figure 3 21 Interconnection terminal of the high liquid level detector has been connected before delivery ...

Page 55: ...tion Guide Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 47 Figure 3 21 Connecting the interconnection terminal 4 Reinstall the water pan cover Step 4 Close the front and the rear doors End 3 7 Installation Flowchart Figure 3 22 shows the NetCol5000 A installation flowchart ...

Page 56: ... Copyright Huawei Technologies Co Ltd 48 Figure 3 22 Installation flowchart 3 8 Installing the Indoor Unit 3 8 1 Preparing Knock out Holes Procedure Step 1 Mark cable holes on the floor based on the sizes of cable holes at the bottom of the indoor unit as shown in Figure 3 23 Then drill the cable holes in the floor ...

Page 57: ...nt The strong current cables and the weak current cables must be routed through separate holes Figure 3 23 Hole position layout unit mm 1 Bottom active AC1 cable hole Φ28 mm 2 Bottom standby AC2 cable hole Φ28 mm 3 Bottom refrigerant gas pipe hole Φ43 mm 4 Bottom drainpipe hole Φ43 mm 5 Bottom refrigerant liquid pipe hole Φ43 mm 6 Bottom humidifier water inlet pipe hole Φ43 mm 7 Top refrigerant ga...

Page 58: ...50 13 Top signal cable hole Φ28 mm 14 Top humidifier water inlet pipe hole Φ43 mm 15 Top skylight signal cable hole Φ28 mm The cabinet must be carried by at least four persons Step 2 Move the cabinet from the pallet to the installation position End 3 8 2 Leveling Feet Use an adjustable wrench to raise or lower the leveling feet as shown in Figure 3 24 ...

Page 59: ...llation can be difficult when you need to use them Figure 3 24 Leveling feet 3 8 3 Optional Installing the Enclosure Frame Procedure Step 1 Open the front door cut off the cable ties binding the LCD cable and disconnect the front door ground cable Then lift and remove the front door Install the enclosure frame on the front door side Step 2 Remove one bolt fastener two cabinet connecting plates and...

Page 60: ... 52 Step 5 Bind the LCD and the NTC cables to the previous binding position using cable ties and install the front door Figure 3 25 Installing an enclosure frame End 3 8 4 Combining Cabinets Loosen the screws on the cabinet connecting plates on the rear door side post and combine the smart cooling product and IT cabinet using cabinet connecting plates ...

Page 61: ...e 03 2020 01 10 Copyright Huawei Technologies Co Ltd 53 Figure 3 26 Combining cabinets 3 8 5 Securing the Indoor Unit If there is a base secure the indoor unit to the base If there is no base secure the indoor unit to the floor Figure 3 27 shows the distances between mounting holes in the indoor unit ...

Page 62: ...between mounting holes Prerequisites Before installing the bolts remove the rodent proof rubber plugs in the mounting holes if there are any Scenario with a Base Step 1 Secure the base to the floor using four M12 expansion bolts Step 2 Place the cabinet onto the base and secure the cabinet to the base using four M12x90 bolts available in the fitting bag as shown in Figure 3 28 ...

Page 63: ...ng an indoor unit to a base Figure 3 28 shows only how the cabinet is secured to the base Secure the base based on site requirements End Scenario Without a Base Step 1 Drill holes in the floor based on the hole distances shown in Figure 3 27 Step 2 Place the cabinet at the designated position and secure it to the floor using four M12 expansion bolts as shown in Figure 3 29 ...

Page 64: ... Copyright Huawei Technologies Co Ltd 56 Figure 3 29 Securing an indoor unit to a floor End 3 8 6 Installing Anchor Baffle Plates Install anchor baffle plates only when you need to secure the indoor unit to a base Secure each anchor baffle plate to the cabinet using four M5x10 tapping screws as shown in Figure 3 30 ...

Page 65: ...0 01 10 Copyright Huawei Technologies Co Ltd 57 The bent flange of the anchor baffle plate faces the cabinet Baffle plates for the front and rear doors are installed in the same way Figure 3 30 Installing an anchor baffle plate 3 9 Exhausting Nitrogen Context Figure 3 31 shows the positions of needle valves ...

Page 66: ... needle valve Procedure Step 1 Remove the bonnets of the liquid pipe needle valve low pressure needle valve and discharge pipe need valve in turn as shown in Figure 3 31 You will hear a sound of strong air flow when air is being exhausted Step 2 Connect a hose to the liquid pipe needle valve low pressure needle valve and discharge pipe need valve in turn to slowly exhaust nitrogen Step 3 Reinstall...

Page 67: ...not expose the refrigerant pipes for over 15 minutes Otherwise system reliability may deteriorate To avoid air leaks and damage to copper pipes seal the holes after the pipes are routed Seal the ends of the copper pipes to prevent foreign matter from entering the refrigerant pipes All refrigerant pipes should be wrapped with thermal insulation foam Avoid elbows and ensure that the pipe route betwe...

Page 68: ...ipe is longer than 80 m contact Huawei technical support Connect refrigerant pipes based on Figure 3 32 If the direction of a refrigerant pipe changes add a support at the position 500 mm before and after the changing point respectively If a refrigerant pipe is straight add a support every 1500 mm Site personnel should prepare the required materials and install the supports For detailed requiremen...

Page 69: ...e after pipe welding is greater than 1 minute Slowly charge nitrogen into pipes through the discharge pipe needle valve when welding gas pipes Slowly charge nitrogen into pipes through the liquid pipe needle valve when welding liquid pipes Figure 3 33 Routing pipes from the bottom 1 Gas pipe 2 Liquid pipe Figure 3 34 Welding schematic diagram Step 2 Take out two straight pipes whose diameters are ...

Page 70: ...d by pipe leaks Step 3 Connect the refrigerant gas and liquid pipes for the two straight pipes respectively to the gas and liquid pipes for the outdoor unit Step 4 When you route pipes from the top melt the plugs at the ends of the refrigerant pipe using a welding torch and weld the refrigerant gas and liquid pipes respectively to the gas and liquid pipes for the outdoor unit as shown in Figure 3 ...

Page 71: ...ter or other water supply systems and the drainpipe connects to the drainage system Determine the water pipes to be connected based on whether a water pump is configured as described in Table 3 12 Table 3 12 Pipe routing description Drainage Mode Pipe Routing Mode Connection Method Water pump Top See A in Figure 3 4 Bottom See B and C in Figure 3 4 A water pump drainpipe can be routed from the top...

Page 72: ... Huawei Technologies Co Ltd 64 Figure 3 36 Connecting the drainpipe in the case of top pipe routing Bottom Pipe Routing Use a flat head screwdriver to remove the hose clamp from the pipe and take out the hose delivered with the smart cooling product Secure the hose to the drainpipe using a hose clamp as shown in Figure 3 37 ...

Page 73: ...ecting the drainpipe in the case of bottom pipe routing 3 10 3 Optional Connect the Water Inlet Pipe to the Electrode Humidifier The humidifier water inlet pipe is a hose installed under the humidifier When connecting the hose straighten the hose as shown by Figure 3 38 and Figure 3 39 After routing pipes secure it with cable ties along the right side post of the cabinet ...

Page 74: ...ooling Product User Manual 208 V 3 Installation Guide Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 66 Figure 3 38 Routing a humidifier water inlet pipe from the bottom Figure 3 39 Routing a humidifier water inlet pipe from the top ...

Page 75: ...en retaining pressure to avoid gas leakage The nitrogen injection ports are located at the low pressure needle valve and discharge pipe needle valve as shown in Figure 3 40 Procedure Step 1 Connect the pressure gauge hose and nitrogen cylinder A reducing valve is recommended to be installed at the outlet of the nitrogen cylinder Figure 3 40 shows the nitrogen injection and pressure preservation di...

Page 76: ...alve Step 2 Inject 3 0 MPa nitrogen and preserve the pressure for 24 hours The system pressure should stay constant under unchanging ambient temperature conditions If there is considerable temperature change and the pressure changes perform the test again Step 3 If welding defects exist locate and repair the leaking point If the pressure does not change exhaust the nitrogen through the injection n...

Page 77: ...ol switch MD2 5 Outdoor unit power AC3 6 Output power breaker QF3 for the outdoor unit and compressor 7 Heating and humidification circuit switch QF4 8 Oil belt fuse FU1 Contactor fuse FU2 FU3 9 Compressor PSU power port X101 connection is not required onsite 10 Electric heating and humidification power port X102 connection is not required onsite 11 Signal port X103 connection is not required onsi...

Page 78: ...ould be routed in from the cable clip Keep cables away from the compressor fan and copper pipe if unavoidable take protective measures and connect cables securely Procedure Step 1 For single power supply connect the external power cable to the L1 L2 L3 and N ports of the AC1 terminal For dual power supply connect the external power cable to the L1 L2 L3 and N ports of the AC1 and AC2 terminals See...

Page 79: ...d 71 When there is only one power supply the power cable must connect to the active power port AC1 The ground cable must meet the local electrical specifications In the bottom cabling scenario with dual power supplies bind a cable 100 mm above and below the sight glass respectively Figure 3 42 Routing power cables in the single power supply scenario ...

Page 80: ... Smart Cooling Product User Manual 208 V 3 Installation Guide Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 72 Figure 3 43 Routing power cables in the dual power supply scenario Step 3 Connect the equipotential ground cable ...

Page 81: ...und cable End 3 11 3 Connecting the Power Cable to the Outdoor Unit Connect the inlet cable terminals L1 L2 L3 respectively to the corresponding terminals of the outdoor unit power cable and connect the PE cable to the ground point to the right of AC3 as shown in Figure 3 45 Keep cables away from the compressor fan and copper pipe if unavoidable take protective measures and connect cables securely...

Page 82: ...bles take effective ESD measures Secure signal ports to a torque of 0 5 N m You can purchase signal cables from Huawei or another vendor Before connecting cables determine the cable routes based on engineering survey Figure 3 46 shows the zoomed in view of the external signal ports that are used for alarm output from the main control board and access of the outdoor unit startup and shutdown remote...

Page 83: ...Outdoor unit control Outdoor unit control dry contact 2 Outdoor unit control dry contact 3 Smoke sensor Smoke sensor power supply 12 V DC 4 Smoke sensor feedback 5 Remote startup and shutdown Remote startup and shutdown 6 Remote startup and shutdown 7 Water sensor Water leak detection contact 1 water leak in the floor 8 Water leak detection contact 1 water leak in the floor X302 1 Outdoor unit RS4...

Page 84: ...t on off signal cable and water sensor signal cable The female connector needs to be removed from the wiring terminal on the external signal port After the cable is connected to the female connector reconnect the connector to the wiring terminal Avoid reverse connection for X301 and X302 terminals Figure 3 47 Routes of the outdoor unit on off signal cable dry contact and water sensor signal cable ...

Page 85: ...ble RS485 and water sensor signal cable 3 11 4 2 Connecting the Outdoor Unit On Off Signal Cable Context The outdoor unit signal cable can connect to a dry contact or an RS485 port by default Outdoor fan control mode is set to Communicate by default If the signal cable connects to a dry contact choose Settings System Settings Outdoor Fan Outdoor fan control mode and set Outdoor fan control mode to...

Page 86: ...fter the compressor starts If the Outdoor fan control mode is changed on the screen the monitoring software will restart Procedure Step 1 Route the cable through the cable protection ring on the top or bottom from the outside then through the cable hole on the top or bottom of the electric control box along the outside of the electric control box Step 2 Connect signal cables RS485 connection Conne...

Page 87: ... teamwork CAN and northbound RS485 port 3 RS485 12 V T H module port 4 Main control module handle 5 SW reserved 6 DIP switch 7 COM northbound RS485 port 8 CAN_OUT output port of the teamwork CAN and northbound RS485 port 9 FE_2 standby port 10 Alarm indicator 11 Run indicator 12 Power indicator Teamwork Control over an FE Port Step 1 Connect one end of the FE network cable to the FE port shown by ...

Page 88: ...50 FE teamwork network diagram 1 Smart ETH gateway Step 2 Prepare an FE network cable according to Figure 3 51 Figure 3 51 Pin sequence of the FE network cable End Teamwork Control over a CAN Bus Step 1 In CAN networking one teamwork network supports a maximum of 32 smart cooling products Figure 3 52 shows the teamwork connections between 32 smart cooling products ...

Page 89: ...g of northbound devices by group flip toggle switches 2 and 3 to OFF For details about how to set see Figure 3 53 3 ON 4 OFF This toggle switch determines whether to restore factory defaults Retain the default value OFF of this switch Step 2 When the EMS monitors smart cooling products over RS485 the time needed for collecting all data from a single smart cooling product is 3 seconds In the teamwo...

Page 90: ...ontrol over a CAN bus Figure 3 53 shows how 32 teamworked smart cooling products four in each group connect to the EMS Users can adjust the number of smart cooling products under one group based on the performance requirements Step 3 Prepare a CAN teamwork cable and an RS485 monitoring cable based on Figure 3 54 and Figure 3 55 Figure 3 54 Pin sequence of a CAN teamwork cable ...

Page 91: ... 11 6 Installing T H Sensors To install the T H sensors you need to connect cables to the sensors and set DIP switches for the sensor Context If more than one T H sensor is connected to an smart cooling product the smart cooling product must differentiate various T H sensors based on DIP switch settings on the sensors that change their communications addresses Figure 3 56 shows a T H sensor Figure...

Page 92: ...ikely to appear in the hot or lack in cold aisle Procedure Step 1 Connect the RS485_OUT of the upstream sensor to RS485_IN of the downstream sensor and connect the T H sensor outside the cabinet and the T H sensor at the return air side in series Figure 3 57 shows cable connection of T H sensors Figure 3 57 Cables routed outside the cabinet 1 Cold aisle side 2 Hot aisle side The T H sensor should ...

Page 93: ...of an T H sensor provided by Huawei is 1 No DIP switch operation is required for the last RS485_R port After setting communications addresses for T H sensors choose Settings System Settings T H Sensor from the main menu and enable the T H sensor in the aisle Otherwise the sensor does not work End 3 12 Verification After Installation Table 3 16 Table 3 17 and Table 3 18 list the items for the verif...

Page 94: ...d The wet film is secured reliably and steadily Passed Failed The humidifier float is secured The fasteners for the humidifier float are secured Passed Failed Water inlet pipes are connected securely without leaks Passed Failed Compressor The sheet metal fastener is removed from the compressor Passed Failed The bolts on the compressor are tightened Passed Failed The electronic expansion valve coil...

Page 95: ...re wrapped with thermal insulation foam and the insulation foam is intact Passed Failed Water pipe joints are sealed by sealant Passed Failed The needle valve plug is secured and equipped with a valve bonnet Passed Failed Check that the needle valve plug is secured torque of 0 45 0 05 N m and valve bonnet is tightened Passed Failed The pipes have no sharp bends Passed Failed Table 3 18 Check items...

Page 96: ... the screen to enter related screens or perform operations such as Running Alarms and Settings The controller main screen is shown in Figure 4 1 User interfaces displayed in this document correspond to the ACC software version V200R001C00SPC300 and are for reference only Figure 4 1 Home screen Table 4 1 Note for the page No Items Note 1 Communication status between the display panel in the status ...

Page 97: ...n alarm is generated When the buzzer is buzzing you can tap anywhere on the screen to mute the buzzer After the buzzer is muted it still buzzes when a new alarm is generated The icon indicates that the buzzer is off silenced After the buzzer is silenced it does not buzz when a new alarm is generated 5 The current critical alarm and their quantity refers to the current critical alarm and their quan...

Page 98: ...irements of the smart cooling product Running Checks the component status system parameters and the name control and operating status and other related information of the components in the current precision smart cooling product system Alarms Checks the active and historical alarms of the smart cooling product and deletes the historical alarms Settings Sets the involved parameters for the operatio...

Page 99: ...ifying parameters Obtain permission from Huawei before modifying any parameter that you are not allowed to modify otherwise Huawei will not be liable for any consequences of the modification Users are classified as Admin who can operate all menus and Operator who can only view parameter settings set the temp and humid set point value and set parameters in the Quick Settings and User Settings menus...

Page 100: ...3 2 Initial Configuration When configuring the temperature and humidity parameters do not place the cursor between the decimal point and the following digit of the value Otherwise the decimal point cannot be deleted and the parameter value fails to be configured 4 3 2 1 Start and Shutdown Context Tap the Start or Shutdown buttons on the home screen to start or shut down the smart cooling product P...

Page 101: ...n remote is reserved on the ACC The status of the remote dry contact and On Off status on remote is on by default The operations that start the smart cooling product successfully by the LCD button or by element management system EMS is effective only when the remote dry contact or On Off status on remote is on the status of on In start mode the Start button is green unavailable and the Shutdown bu...

Page 102: ... and humidity of the aisle The temperature and humidity values come from the humidity and temperature sensor in the aisle Temp control mode Controls the temperature inside the room or aisles based on the Average Maximum or Minimum of the temperatures collected by each sensor Average Select Average if the temperature is to be controlled based on the averaged data value collected by the collector Ma...

Page 103: ... sensors in hot aisles to Enable Enable the corresponding humidity and temperature sensor installed in the hot aisle End 4 3 2 3 Setting Communications Parameters IP Settings Procedure Step 1 On the home screen choose Settings Comm Settings IP Settings Figure 4 7 is displayed Figure 4 7 Setting the IP address subnet mask and gateway address Step 2 Set the parameters by referring to Table 4 3 Table...

Page 104: ...ter Specification Setting Method Protocol Modbus RTU Modbus RTU If a smart cooling product needs to connect to an EMS using an RS485 cable set Protocol to Modbus RTU Baud rate 9600 19200 Set the baud rate as required The value should be consistent with that at the EMS side This parameter is configurable when Protocol is set to Modbus RTU Comm address 1 255 Set the address of the smart cooling prod...

Page 105: ...r the smart cooling product in the same group cannot be the same address range 1 32 The smart cooling product addressed 1 is the master one that collects processes and delivers data It is recommended that you set the unit address numbers from one to the Total number of units in this group Some parameters of the slave units will be modified by the master unit synchronously Context The parameters in...

Page 106: ... heat distribution Disable Teamwork mode Set the teamwork mode The options include Smart and iCooling Determine whether to enable the iCooling mode based on onsite heat load variations If the heat load varies greatly it is recommended that you enable the iCooling mode The parameter can only be modified on the ECC WebUI and cannot be modified on the smart cooling product screen Smart Enable L1 L2 l...

Page 107: ... units The rest will become the standby ones 2 Rotation Disable or enable the active and standby smart cooling products to change identity after a certain time maximizing their service life This function is recommended when the heat is even Disable Rotation period Rotation days 1 30 7 by default 7 day s Rotation time 24 hours in a day 0 23 0 by default 0 Forced rotation Forced rotation specifies w...

Page 108: ... enabled you can configure Cascade The cascade function starts standby smart cooling products if the active one cannot meet the refrigerating requirements If the heat load to the device increases the cascade function is recommended Disable Large ring cooling capacity P Proportion coefficient in L1 L2 linkage PID control You are not recommended to change the value 0 10 Large ring cooling capacity I...

Page 109: ... rise rate when the temperature rises rapidly caused by sudden load power increase Set this parameter based on the micro module size and maximum load power The smaller the module and the higher the load power the greater the temperature rise rate is 4 0 C min L1 L2 linkage temperature Temperature setpoint in L1 L2 linkage Target temperature controlled in the micro module The parameter can only be ...

Page 110: ...he master one and the rest are all slave ones NOTE If the master one offline the teamwork networking failed 3 Active Standby Active properly responds to the requirement control Standby responds to the requirement control when Active is faulty critical alarms shutdown and offline or Active cannot meet cooling requirements 4 Frame green non green A device with green frame indicates the device itself...

Page 111: ...connection and the settings of teamwork control parameters 4 Check whether the number of online devices on the topology is the same as the actual device number If yes the check is complete If no check the cable connection and the settings of teamwork control parameters 4 3 2 6 Optional Setting Alarm Parameters Prerequisites Before setting the alarm parameters get familiar with the relationship amo...

Page 112: ...rms are displayed on the LCD and the system performs related protection actions Disallow Alarms are not generated and no protection actions are performed The method for setting each alarm is the same This section describes how to set Delay of Supply air HT to 5 Be careful when configuring alarms Only professional maintenance personnel can change alarm settings Procedure Step 1 Choose Settings Alar...

Page 113: ... off components and control their output ratio If you need to manually turn on or off system components in diagnostic mode ensure that the smart cooling product is started before operation Procedure Step 1 Choose Maint Diagnostic Mode Enter Yes Figure 4 13 is displayed Figure 4 13 Entering the diagnostic mode The screen for entering the diagnostic mode Components are interlocked Therefore buttons ...

Page 114: ...d on the following coupling relationships are presented When the compressor including fixed frequency and frequency converting is turned on the indoor fans outdoor fans and the liquid solenoid valve automatically turned on When the electric heater is turned on the corresponding indoor fan automatically turned on When the electrode humidifier is turned on the corresponding indoor fan automatically ...

Page 115: ...e Electric heater turns into OnStatus End 4 4 Maintenance Guide 4 4 1 Querying Parameters 4 4 1 1 Querying Temperature and Humidity Curves Context The T H Curve screen displays temperature and humidity curves showing the recent temperature and humidity changes You can choose to display the curves showing data changes of recent 1 hour 1 day 7 days or 30 days Procedure Step 1 On the home screen tap ...

Page 116: ...mp set point 3 C to temp set point 3 C at least and from temp set point 30 C to temp set point 30 C at most You can view the humidity from humidity set point 5 to humidity set point 5 at least and from humidity set point 50 to humidity set point 50 at most Specific humidity fluctuation range displayed varies according to different models of smart cooling products End 4 4 1 2 Querying Alarms Contex...

Page 117: ... automatically cleared after the fault is rectified If the icon is displayed on the Details screen it indicates that the alarm can be cleared manually You need to tap Clear to clear the alarm after the fault is rectified The alarm clearance type automatic or manual varies with smart cooling products Some of the alarms can either be cleared automatically or manually Perform operations as required F...

Page 118: ...ons on the system Maintenance and technical service engineers can query logs to locate operations on the system Procedure Step 1 On the home screen choose Maint Log Maint Query Logs Figure 4 19 is displayed Figure 4 19 Query logs screen End 4 4 1 4 Querying Device Runtime Procedure Step 1 On the home screen choose Maint Performance Maint Figure 4 20 is displayed Figure 4 20 Performance maint scree...

Page 119: ...eters for the component are displayed Procedure When viewing the component status through Status choose Common Functions Status or Running Status on the home screen The general component status screen is displayed Figure 4 21 shows the screen displayed after choosing Running Status Figure 4 21 General status The actual number of devices is displayed on the screen If two indoor fans are used indoor...

Page 120: ...wer frequency Enter the Device Details screen and then enter the menu of a specific component All parameters for the component are displayed Procedure When querying system parameters through Operating Info choose Common Functions Operating Info or Running Operating Info on the home screen the related screen is displayed Figure 4 23 shows the screen displayed after choosing Running Operating Info F...

Page 121: ...e version details of the display panel control board and temperature and humidity collection board The E label screen displays electronic labels of the entire system control board display panel temperature and humidity collection board and so on When some T H boards of the cold or hot aisles are enabled T H Board on the About Version Info screen or T H Board on the About E label screen shows the i...

Page 122: ...all historical alarms Because this operation may cause clearance of all historical alarms and affects device maintenance Procedure Step 1 On the home screen choose Alarms Delete Hist Alarms to enter the Delete Hist Alarms screen shown in Figure 4 26 Figure 4 26 Delete hist alarms screen Step 2 Tap Yes to delete all historical alarms After alarms are deleted the operation is recorded in logs End 4 ...

Page 123: ...t methods are the same This section uses one click mode as an example to describe the export method You are advised to use the FAT32 USB flash drive with a capacity no greater than 64 GB Format the non FAT32 USB flash drives into FAT32 ones before using them Before using a USB flash drive ensure that its data has been scanned by antivirus software and is secure Before exporting active alarms histo...

Page 124: ...d tap Next Then tap Yes in the displayed dialog box Step 3 After the data is successfully exported Figure 4 28 is displayed Click Finish Figure 4 28 Screen showing that data export has succeeded Step 4 Click Maint USB Operations Remove USB to remove the USB flash drive in safe mode End 4 4 2 4 Clearing the Runtime Context Performance value clearance can be performed only after component maintenanc...

Page 125: ...ibrating a Sensor Context Calibrate a sensor if the displayed temperature or humidity on the sensor deviates from the actual value For example if the return air temperature measured by other temperature detection devices at the return air detection point is 20 C while the value measured by the sensor is 22 C the sensor has an error of 2 C and the calibration value should be set to 2 C Procedure St...

Page 126: ...ng the screen by DIP switch The display board works normally the deviation between the touching point and the responding point is unfavorably big or the screen does not respond when being tapped You can calibrate the screen by DIP switch only when the system enters Quick Settings page after the first power on or when the system is on the home screen The LCD is an industrial resistive touchscreen T...

Page 127: ...N and others remain unchanged and the screen calibration function is triggered After 15 seconds a dialog box indicating Are you sure you want to calibrate the screen If you do not click Yes or No calibration will start automatically 10 seconds later is displayed as shown in Figure 4 33 Figure 4 33 Confirming to calibrate the screen c Wait for 10 seconds or tap Yes Figure 4 31 is displayed Tap the ...

Page 128: ... by 1 2 and 3 in Figure 4 4 End 4 5 2 How to Set the Language Date or Time Context Enter the User Settings screen to set the Language Date or Time You can also set Time zone Password LCD contrast LCD saturation LCD brightness and LCD backlight off delay on the screen Procedure Step 1 On the home screen choose Settings User Settings Figure 4 34 is displayed Figure 4 34 User settings screen Step 2 T...

Page 129: ...rerequisites You can only change the password of the current user Procedure Step 1 On the home screen choose Settings User Settings to enter the User Settings screen as shown in Figure 4 35 Figure 4 35 User settings screen Step 2 Tap Password to enter the password changing screen as shown in Figure 4 36 It is recommended that the password should contain at least two types of characters ...

Page 130: ...on Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 122 Figure 4 36 Changing the password End 4 5 4 Restoring Factory Settings Context If you have forgotten the password or need to delete system information you can restore factory settings using DIP switch on the main control module ...

Page 131: ...he screen and wait for the system to shut down Step 2 Disconnect the main power supply of the device Step 3 Switch the fourth toggle of the DIP switch on the main control module to ON Figure 4 37 shows the DIP switches on the main control module Figure 4 37 DIP switches on the main control module Step 4 Connect the main power supply of the device Step 5 After the restart completes the LCD displays...

Page 132: ...identified or does not match Failed to obtain the version information Entering upgrade mode The display board and control board software versions are incompatible Entering the upgrade mode Figure 4 38 Upgrade mode In the upgrade mode you can only query the system version information In this case perform the following steps for troubleshooting Procedure Step 1 After you have entered the home screen...

Page 133: ...ep 1 Tap Alarms Query Act Alarms Air filter blocked on the home screen The alarm information is displayed as shown in Figure 4 39 Figure 4 39 Manually clearing the alarm Step 2 Tap Clear a dialog box for confirming clearance is displayed Step 3 Tap Yes the Command triggered successfully message is displayed Step 4 Tap OK End 4 5 8 How to Enable a Humidity and Temperature Sensor Context A humidity ...

Page 134: ...rk control information screen Master Slave and Active Standby indicate the information of this single unit Other information is about the teamwork control information of the group Required cooling capacity indicates the total cooling heating requirements of the group and is used as a reference for enabling the cooling heating mode by the master device If the cascade function is enabled the capacit...

Page 135: ... values after restoring defaults For details about how to use export configurations see 4 4 2 3 Exporting Data After default settings are restored all communication addresses are changed to 1 and the communication between all devices and the EMS is disconnected The communication addresses must be reset to recover the communication 4 5 11 How to Change the SSH Access Password Context SSH is used on...

Page 136: ...llowing requirements Contains at least eight characters Contains at least two types of characters lowercase letter uppercase letter digit space and special character _ Be different from the user name or user name in its inverted order If a user enters incorrect passwords for five times the user s account will be locked for 10 minutes Step 3 After successful login enter su and Changeme to switch to...

Page 137: ...ure 4 43 Switching to the root user Step 4 Enter passwd the password change command to change the password In the displayed window enter a new password and confirm it as shown in Figure 4 44 Figure 4 44 Changing the password The new password must meet complexity requirements When you are changing the password you can press Ctrl C to stop this operation End ...

Page 138: ...LCD the smart cooling product can run properly To remove this tip perform Step 1 Figure 4 45 Message 1 If the information shown in Figure 4 46 is displayed on the controller LCD the smart cooling product cannot run properly Perform Step 2 and subsequent steps Figure 4 46 Message 2 Figure 4 46 uses ACC V100R001C20SPC300 as an example to describe the prompt messages on the screen During actual opera...

Page 139: ...ses maintaining smart cooling product No 3 under a micro module that has five smart cooling products as an example to describe the operation procedure Procedure Step 1 On the Teamwork Settings screen decrease the values of Total number of units and Number of running units by 1 respectively Step 2 Respectively modify the values of Teamwork unit address to 3 and 4 for smart cooling products No 4 and...

Page 140: ...ves insulation shoes Others torch 5 2 Vacuumization and Refrigerant Precharging Ensure that no combustion supporting materials air or additives enter the smart cooling product system during commissioning Huawei shall not be liable for any risks and losses thus incurred 5 2 1 Requirements of Refrigerant and Refrigerant Oil to Be Charged Refrigerant and Refrigerant Oil to Be Charged of NetCol500 A02...

Page 141: ...igerant Oil Prerequisites Check whether refrigerant oil needs to be added by referring to 5 2 1 Requirements of Refrigerant and Refrigerant Oil to Be Charged If not directly vacuumize the cooling system by referring to 5 2 3 Vacuumizing There is no need to charge refrigerant oil upon the initial commissioning If you need to charge refrigerant oil onsite during maintenance see Figure 5 1 Context En...

Page 142: ...frigerant oil barrel 2 Electric balance 3 Vacuum pump 4 Discharge pipe needle valve 5 Low pressure needle valve Step 2 Open the vacuum pump to charge refrigerant oil to the cooling system Close the vacuum pump after all the refrigerant oil is charged into the system Step 3 Remove the refrigerant oil barrel and vacuum pump End 5 2 3 Vacuumizing Procedure Step 1 Connect pressure gauges and vacuum pu...

Page 143: ...d open the pressure gauges alternatively for several times The position of the pressure gauge pointers and the sound made by the vacuum pump do not change Otherwise the cooling system may not be sealed properly Step 4 Check that the time for vacuumizing is 80 minutes or longer after making sure that the cooling system does not leak the pressure displayed on the vacuum pump is less than or equal to...

Page 144: ...nnecting to the steel vessel of the refrigerant Context Wear protective gloves when handling refrigerant Charge the refrigerant R410A after checking that the cooling system does not leak and the vacuum meets the requirements Charge refrigerant as required upon calculation shown in 5 2 1 Requirements of Refrigerant and Refrigerant Oil to Be Charged Otherwise the device may be damaged Procedure Step...

Page 145: ...n an electric balance and clear the reading Step 4 Open valves of the pressure gauges and the steel vessel shown in Figure 5 3 and start charging refrigerant Never move the hose or steel vessel during refrigerant charging Otherwise the value on the electric balance is influenced Charge less than 1 kg of refrigerant from the low pressure side and charge the rest from the discharge pipe needle valve...

Page 146: ... 3 Verify that the output power breaker for the outdoor unit and compressor QF3 and heating and humidification switch QF4 are switched on Step 4 Verify that fan switches Fan1 to Fan6 are switched on Step 5 For the single power input scenario verify that the phase sequence is correct For the dual power input scenario verify that the phase sequence is correct and that MD1 and MD2 are switched on Ste...

Page 147: ...r any such consequences Procedure Step 1 Switch on the smart cooling product switch in the upstream PDC Step 2 Verify that the QF3 switch that controls the outdoor unit and compressor QF4 switch that controls the heater and humidifier MD1 and MD2 are ON Step 3 When the device is powered on for the first time log in as the Admin user Then set the following parameters on the displayed Quick Settings...

Page 148: ... reported during commissioning handle the alarm by following the instructions in 6 3 Alarm reference and 6 4 Troubleshooting If no electric heater humidifier or water pump is configured skip the commissioning procedures for such components Procedure Step 1 Turn on the QF3 switch that controls the outdoor unit and compressor and the QF4 switch that controls the heater and humidifier Step 2 Check th...

Page 149: ...ndoor fan to 0 Step 6 Commission the compressor by setting the compressor rotational speed to 3000 rpm 1 On the home screen choose Running Device Details Compressor and check that the value of Suction pressure is in the range of 0 7 1 2 MPa and the value of Discharge pressure is in a range listed in the following table Table 5 2 Normal discharge pressure ranges Outdoor Ambient Temperature Normal D...

Page 150: ...heck that the drainpipe does not leak during the process Step 8 Optional Commission the water pump Open the cover in front of the water pan and lift the low liquid level detector The pump starts working after 5 seconds Then release the liquid level detector and shut down the pump It is normal if a pump alarm is generated during the pump operation when there is no water in the pan The pump generate...

Page 151: ...ise caution as the equipment is still energized shortly after it is powered off When maintaining or replacing an smart cooling product component turn off the smart cooling product switch in the upstream PDC Step 2 Turn off all switches in the electric control box of the smart cooling product Step 3 Turn off the smart cooling product switch in the upstream PDC End ...

Page 152: ...nance 6 1 Maintenance Components Figure 6 1 shows the positions of the components to be maintained Figure 6 1 Components 1 Evaporator 2 External signal port 3 Strong current box 4 Weak current box 5 Transformer 6 Compressor drive 7 Humidifier cylinder 8 Oil separator 9 Compressor 10 Discharge pipe 11 Drainpipe 12 Liquid pipe 13 Rear door 14 Air Filter 15 LCD 16 Fan 17 Water pan cover 18 Water pump...

Page 153: ...d all necessary safety precautions and be able to correctly perform all operations Pay attention to the safety symbols on the equipment and all safety instructions in this document The safety precautions given in this document do not cover all safety precautions Huawei will not be liable for any consequence caused by violation of the safety operation regulations and design production and usage sta...

Page 154: ...lashlight Insulation gloves N A N A N A N A For parts replacement see the appropriate section for information about the required tools 6 2 2 Data Record Before performing monthly maintenance record data in Table 6 2 Table 6 2 Recording table Menu Item Parameter Record Choose Settings System Settings T H Sensor T H control type Temp set point Humid set point Choose Common Functions Operating Info o...

Page 155: ...ace the fan guard Check that the indoor fan blades are intact Replace the fan Check that the indoor fan does not generate abnormal noise during operation Replace the fan Check that the screws on the indoor fan are not loose or distorted Tighten the screws Water pan filter Check that the condensate pan and liquid level detector have no dirt or scale Clean dirt or scale from the condensate pan and l...

Page 156: ...le and humidifier float functions properly Clean or replace the humidifier float The wet film and humidifier water pan are clean and have no scale Replace the wet film humidifier The wet film should be replaced every 12 months No operating overtime alarm is generated on the wet film humidifier Replace the wet film humidifier The upstream water pan filter of the humidifier pump is not dirty or bloc...

Page 157: ...t inside the box Ensure that there is no reverse or open phase for the input power cable of the smart cooling product Adjust the cable sequence Check that all circuit breakers and fuses are working properly Replace the abnormal circuit breaker and fuse Check and fasten all circuit connections Fasten all circuit connections Check that various electric components control components and the surge pro...

Page 158: ...ty 1 Check the cables to the temp sensor 2 Maintain or replace the temp sensor Return air 2 temp invalid Major The alarm is generated 1 Dirt or water exists around the T H sensor which leads to a detection fault 2 The temp sensor is faulty 1 Remove dirt or water from the T H sensor 2 Maintain or replace the temp sensor a002 Return air HT Critical The alarm is generated 1 The load is high or the re...

Page 159: ...he temp sensor a007 Return air 2 T H brd comm failed Major The alarm is generated 1 The cables to the T H sensor are loose or damaged 2 The DIP switch of the T H sensor is set incorrectly 3 The T H sensor is faulty 4 The communication port of the control board is faulty 1 Check the cables to the T H sensor 2 Set the DIP switch of the T H sensor correctly 3 Maintain or replace the T H sensor 4 Main...

Page 160: ...to the solutions for the a008 comp HP alarm NOTE After the alarm is rectified click Manual clear on the alarm page a012 Comp discharge HT Major The alarm is generated and the compressor is forcibly shut down 1 The refrigerant leaks 2 The condenser fins are blocked 3 The ambient temperature is higher than the upper alarm threshold 4 The temperature displayed by the discharge temperature sensor is d...

Page 161: ...e indoor fans are faulty 1 Check the cables to the temp switch of the elec heater 2 Replace the elec heater 3 Maintain or replace the indoor fans a024 Elec heater 1 exceed runtime Warning The alarm is generated The accumulated runtime of the elec heater exceeds the alarm threshold Maintain or replace the elec heater and clear the accumulated runtime a025 Air filter blocked Warning The alarm is gen...

Page 162: ... the system shuts down 1 The power supply voltage is too high 2 The SPD three phase test board is faulty 1 Check the power supply voltage 2 Replace the SPD three phase test board a031 Power phase A undervolt Major The alarm is generated and the system shuts down 1 The power supply voltage is too low 2 The SPD three phase test board is faulty 1 Check the power supply voltage 2 Replace the SPD three...

Page 163: ... Check cables to the liquid pipe temp sensor a039 Ctrl point sensor disabled Major The alarm is generated All the T H sensors of the control point are disabled Enable the T H sensors of the control point or change the control point a040 PSU 1 2 power input failure Warning The alarm is generated The power input cables of the PSU are loose or damaged Check the power input cables of the PSU a041 Cond...

Page 164: ... switch is set incorrectly for teamwork 2 The teamwork cables are loose or damaged 3 Any two smart cooling product units have the same address 4 No smart cooling product unit is configured as the master unit 5 The master unit is powered off 6 The ETH converter is fault 7 The smart socket is fault 8 The cables are faulty between the smart cooling product and the ETH converter or the supervisory 1 S...

Page 165: ...ropriate 5 The temp displayed is different from the actual temp 1 Add more smart cooling product units 2 Check other causes if the alarm persists after startup 3 Check the ambient temp 4 Adjust the supply air HT alarm threshold 5 Calibrate or replace the abnormal sensors a049 Supply air LT Warning The alarm is generated 1 The load is low 2 The ambient temp is low 3 The supply air LT alarm threshol...

Page 166: ...ed is different from the actual temp 5 The load is high or the refrigeration capacity is insufficient 1 Adjust the position of the cold aisle T H sensors 2 Check other causes if the alarm persists after startup 3 Adjust the supply air HT alarm threshold 4 Calibrate or replace the abnormal sensors 5 Add more smart cooling product units a052 Supply air 1 2 temp invalid Major The alarm is generated 1...

Page 167: ...ed and the compressor is shut down 1 The outdoor unit input power has an open phase incorrect phase sequence or is unavailable 2 Signal cables to the outdoor unit are not properly connected 3 The condenser fins are blocked 4 The outdoor fan driver or fan is faulty 5 Cables to the high pressure switch are not properly connected 6 The high pressure switch is faulty 7 The EEV is faulty 8 The refriger...

Page 168: ...re faulty 1 Check for any leakages Fill refrigerant after maintenance or replacement 2 Maintain or replace the solenoid coil or the solenoid valve 3 Check the cables to the press sensor 4 Calibrate or replace the press sensor 5 Maintain or replace the dryer filter 6 Maintain or replace the expansion valve 7 Maintain or replace the indoor fans a061 Comp suction LP lock Critical The alarm is generat...

Page 169: ... faulty 1 Check the power supply voltage 2 Maintain or replace the comp driver 3 Maintain or replace the comp a066 Comp drive DC undervolt Major The alarm is generated 1 The power supply voltage is low 2 The comp driver is faulty 3 The comp is faulty 4 The main power supply is faulty or the cables to the comp driver are loose or damaged 1 Check the power supply voltage 2 Maintain or replace the co...

Page 170: ...ver are faulty Check the fans in the comp driver a071 Comp drive module overheat Major The alarm is generated 1 The fans in the comp driver are faulty 2 Dirt exists in the air vents of the fans in the comp driver 1 Check the fans in the comp driver 2 Clean the air vents of the fans in the comp driver a072 Comp drive U phase loss Major The alarm is generated 1 The cables to phase U of the comp driv...

Page 171: ...ply to the indoor fan is abnormal 2 The cables to the indoor fan are loose or damaged 3 The indoor fan is faulty 1 Check the power supply to the indoor fan 2 Check the cables to the indoor fan 3 Maintain or replace the indoor fan a078 Full water Critical The alarm is generated and the system shuts down 1 The cables to the high liquid level detector are loose or damaged 2 The high liquid level dete...

Page 172: ...ernal drainpipe is blocked or frozen 6 If a condensate pump is configured there maybe has air in drainpipe 1 Check cables to the liquid level detector 2 Maintain or replace the liquid level detector 3 Maintain or replace the condensate pump 4 Clear the obstacles in the condensate pump 5 Clear foreign matters at the automatic drainage port or in the internal drainpipe 6 Exhaust air in the water pum...

Page 173: ...ated 1 The T H sensors are located in inappropriate position 2 The ambient humidity is low 3 The low humidity alarm threshold is inappropriate 4 The humidity displayed is different from the actual humidity 1 Adjust the position of the T H sensors 2 Check the ambient humidity 3 Adjust the low humidity alarm threshold 4 Calibrate or replace the abnormal T H sensors a095 Comp drive short period Criti...

Page 174: ...und the T H sensor which leads to a detection fault 2 The T H sensor is faulty 1 Remove dirt or water from the T H sensor 2 Maintain or replace the T H sensor a110 Cold aisle 1 2 3 T H brd comm failed Major The alarm is generated 1 The cables to the T H sensor are loose or damaged 2 The DIP switch of the T H sensor is set incorrectly 3 The T H sensor is faulty 4 The communication port of the contr...

Page 175: ...4 The cables are faulty between the smart cooling product and the ETH converter or the supervisory 1 Check the supervisory works properly 2 Check the ETH converter works properly 3 Check smart socket works properly 4 Maintain or replace the cables between the smart cooling product and the ETH converter or the supervisory a117 Group units number not match Major Cannot obtain smart cooling product d...

Page 176: ...nfiguration of the supervisory ECC is faulty 6 The configuration of the smart cooling product is faulty 7 Teamwork settings are incorrect for the master unit 1 Maintain or replace the cables to the temp sensor the rack environment unit and the supervisory ECC 2 Maintain or replace the temp sensor of cabinets 3 Check or maintain the supervisory ECC 4 Check or maintain the rack environment unit 5 Ch...

Page 177: ...ulty or blocked 4 The drainage solenoid valve leaks 5 Humidifier electrodes or cable connections are faulty and no current exists in the cylinder 6 The high water level sensor circuit is faulty 7 The high water level sensor is short circuited 1 Verify that the water supply pressure is 0 1 to 0 7 MPa 2 Verify that the water supply pipe is unblocked and the water source has water 3 Verify that cable...

Page 178: ...fy that the inlet water valve works properly Wash or replace the valve if necessary 2 Verify that cables to the drainage solenoid valve are properly connected Wash or replace the valve if necessary 3 Verify that the drainpipe can drain water smoothly NOTE After the alarm is rectified click Manual clear on the alarm page a127 Cylinder overcurrent Major The alarm is generated 1 The electrodes in the...

Page 179: ...trodes in the humidifier cylinder or the power cables are short circuited 2 The water inlet solenoid valve leaks 3 The inlet water conductivity exceeds the upper threshold 4 The current transformer circuit is faulty 5 The drainage solenoid valve is faulty or blocked 6 The drainpipe is blocked 1 Verify that electrodes are normal not burnt or short circuited and the power cable is not short circuite...

Page 180: ...ted 2 The temperature sensor is faulty 1 Check cables to the temperature sensor 2 Maintain or replace the temperature sensor a136 EEV low overheating degree Major The alarm is generated and the compressor is shut down 1 The electronic expansion valve coil is loose 2 The electronic expansion valve coil is faulty 3 The electronic expansion valve is faulty 4 The dehumid solenoid valve coil is faulty ...

Page 181: ... valve NOTE After the alarm is rectified click Manual clear on the alarm page a140 EEV auto control fault Critical The alarm is generated and the compressor is shut down 1 The suction pressure sensor is faulty 2 The suction temperature sensor is faulty 1 Verify that the suction pressure sensor works properly 2 Verify that the suction temperature sensor works properly a141 EEV driver comm Fault Maj...

Page 182: ...oor fan blocked Major The compressor is shut down The fan is blocked Clean the fan and remove obstacles to ensure that the fan works properly a147 Outdoor fan Dr OP open phase Major The compressor is shut down 1 A driver output cable connector or fan input cable connector is loose 2 A cable is not properly connected 1 Secure the driver output cable 2 Replace the driver output cable a148 R W fail o...

Page 183: ...erify that the supply voltage meets specifications a155 Inverter power module overtemp Major The compressor is shut down 1 The fan is faulty 2 The ambient temperature exceeds the upper threshold 1 Replace the fan 2 Power off and power on after the ambient temperature drops to a proper level a156 Inverter output U overcurrent Major The compressor is shut down 1 The driver output cable is grounded 2...

Page 184: ... faulty or grounded a161 Outdoor fan output current Imb Major The compressor is shut down The fan three phase loads are imbalanced Check whether the fan is faulty a162 Outdoor fan pres sensor fault Warning The alarm is generated 1 A cable of the pressure sensor is loose 2 The pressure sensor is faulty 1 Secure the pressure sensor terminals 2 Replace the pressure sensor a163 Outdoor fan overtemp Ma...

Page 185: ...lty a171 Power phase C open Critical The alarm is generated and the system shuts down 1 The power grid is unstable 2 The phase C cable is faulty 1 Check the power grid 2 Check the phase C cable is faulty a172 SPD 3 phase test board comm fault Major The alarm is generated 1 The communication s cable is not properly connected 2 The SPD three phase test board is faulty 3 The communication port of the...

Page 186: ...ack environment unit and the supervisory ECC 3 Maintain or replace the T H sensor of smart cooling product 4 Maintain or replace the cables between the T H sensor and the control board 5 Set the DIP switch correctly for T H sensor 6 Maintain or replace the control board 7 Check the ETH converter works properly 8 Check the rack environment unit works properly a176 Insufficient water supply locked M...

Page 187: ...kage function of the iCooling is disabled 1 All T H sensor of cabinet is faulty 2 All cables to the T H sensor of the cabinet are loose or damaged 3 All aisles T H sensor of smart cooling product is faulty 4 All cables to the aisles T H sensor of the smart cooling product are loose or damaged 5 All DIP switch of the T H sensor is set incorrectly 6 All communication port of the control board is fau...

Page 188: ...ical The alarm is generated and the compressor is forcibly shut down Multiple outdoor unit alarms have been generated Check the outdoor unit alarms and troubleshoot according to the suggestions a191 EEV driver power off Critical The alarm is generated and the compressor is forcibly shut down EEV driver board fault Replace the main control module a192 Power phase B open locked Critical The alarm is...

Page 189: ...ulty Replace it if it is faulty The compressor discharge temperature is too high The refrigerant loop or component is blocked Clean up foreign matter from the refrigerant loop The outdoor unit is installed in an inappropriate position The outdoor unit should not be exposed to direct sunlight and must be installed at a specified spacing according to the installation guide Install the outdoor unit i...

Page 190: ...rates excessive noises a normal noise is generated when the compressor shuts down Liquid returns in a compressor Check whether the oil temperature and discharge temperature are within a normal range Normal range 70 C to 100 C The refrigerant oil is insufficient Add the refrigerant oil The transport sheet metal is not removed from a compressor Remove the sheet metal An indoor fan fails to start The...

Page 191: ... Replace the water pump The water level detector is faulty Check alarms displayed on the LCD cables to the high and low water liquid level detector whether the water liquid level detector are damaged and replace the water liquid level detector if necessary The water inlet pipe and drainpipe leak Check the water inlet pipe and drainpipe and the connectors Rectify any leakage and fasten the connecto...

Page 192: ...continuously injected into the humidifier cylinder The water inlet solenoid valve fails and cannot be closed Start the humidifier repeatedly in diagnostic mode If the problem persists replace the water inlet solenoid valve 5 The humidifier circuit breaker trips automatically The actual current exceeds the upper threshold which causes the current transformer to fail The detected current is incorrec...

Page 193: ...let solenoid valve is open when humidification is enabled If the fault does not restore contact Huawei technical support 6 5 Parts Replacement After replacing any part verify that the new part works properly 6 5 1 Replacing the Air Filter Prerequisites The air filter needs to be replaced A spare air filter of the same model is available and functional Context Each smart cooling product has two air...

Page 194: ...cedure Power on the NetCol5000 A choose Maint Performance Maint on the home screen and clear the air filter runtime 6 5 2 Replacing the Indoor Fan Prerequisites The indoor fan needs to be replaced A spare indoor fan of the same model is available and functional Tools protective gloves Phillips screwdriver diagonal pliers cable ties Context The indoor fan can be maintained only from the front Proce...

Page 195: ...screws When installing a fan tighten the captive screws clockwise and then install the screws Step 3 Remove the fan Use a Phillips screwdriver to remove the four screws that secure the faulty fan and remove the fan and fan guard as shown in Figure 6 4 Figure 6 4 Removing a single fan A Captive screws If the entire fan assembly needs to be replaced unscrew the fan support by removing the four screw...

Page 196: ...ollow up Procedure Power on the NetCol5000 A choose Maint Performance Maint on the home screen and clear the indoor fan runtime 6 5 3 Replacing the Differential Pressure Switch Prerequisites The differential pressure switch needs to be replaced A spare differential pressure switch of the same model is available and functional Tool Phillips screwdriver Context The differential pressure switch can b...

Page 197: ...ferential pressure switch and remove the pressure tube as shown in Figure 6 6 Figure 6 6 Removing a differential pressure switch Step 4 Remove the differential pressure switch assembly unscrew the cover and disconnect the cables Step 5 Remove the four screws securing the differential pressure switch and take out the faulty differential pressure switch Step 6 Set the pressure to 100 Pa for the new ...

Page 198: ... wrench Context The compressor can be maintained only from the rear door Reclaim or dispose of the refrigerant in accordance with local laws and regulations Do not directly discharge the refrigerant to the atmosphere When replacing a compressor avoid skin contact with the refrigerant or refrigerant oil to prevent frostbite or burns Do not tilt the compressor during replacement to prevent lubricant...

Page 199: ... the air filter Step 3 Reclaim refrigerant Step 4 Remove the electric heating belt Step 5 Remove the compressor Figure 6 8 Removing a compressor 1 Use a flat head screwdriver to clamp the buckle of the compressor connection box remove the cover of the connection box and disconnect cables from the compressor as shown by 1 in Figure 6 8 2 Heat the suction angle valve joints using a heat gun for 10 m...

Page 200: ...r the installation check that the input power cables of the compressor are in the same phase sequence as those of the wiring terminals Step 7 Secure the new compressor to the support using a solid wrench secure the compressor support to the cabinet interior using a 13 socket wrench and install an electric heating belt in the cabinet Step 8 Apply red glue from the second to fourth circles of the in...

Page 201: ...le and functional Tools welding equipment refrigerant retrieval device configured based on local conditions Phillips screwdriver nitrogen cylinder refrigerant tank vacuum pump pressure gauge leather hose protective gloves Preparation Power off the indoor unit and reclaim all refrigerant from the system Context Figure 6 9 shows the position of the filter dryer Figure 6 9 Position of the filter drye...

Page 202: ...side the system Discharge the refrigerant if the local laws and regulations allow Step 3 Remove the liquid pipe NTC temperature sensor shown by 1 in Figure 6 9 Step 4 Remove the filter dryer as shown in Figure 6 10 Use copper welding rods to weld the connection ports and check that the welding joints are in good condition without poor soldering To avoid burning the internal components other pipes ...

Page 203: ... filter dryer assembly and take out the filter dryer Step 5 Install the new filter dryer as shown in Figure 6 11 Weld the entrance elbow and the new filter dryer to form an assembly and then weld the assembly to the original position Note that the arrow direction on the filter dryer identifies the flow direction of the refrigerant Do not use face down bonding Figure 6 11 Installing the filter drye...

Page 204: ...er Prerequisites The filter dryer needs to be replaced A spare threaded filter dryer of the same model is available and functional Tools refrigerant retrieval device configured based on local conditions Phillips screwdriver nitrogen cylinder refrigerant tank vacuum pump pressure gauge leather hose protective gloves two 27 adjustable wrenches 36 wrench Preparation Power off the indoor unit and recl...

Page 205: ... shut down over the LCD Step 2 Reclaim all refrigerant from the system using a refrigerant retrieval device to ensure that there is no pressure inside the system Discharge the refrigerant if the local laws and regulations allow Step 3 Remove the liquid pipe NTC temperature sensor shown by 1 in Figure 6 12 Step 4 Remove the filter dryer as shown in Figure 6 13 Filter dryer replacement requires the ...

Page 206: ... 6 14 Secure the filter dryer in the original position The arrow direction on the filter dryer identifies the flow direction of the refrigerant Installation of the new filter dryer requires the collaboration of two persons The torque for tightening the adjustable nut is 70 N m Figure 6 14 Installing the filter dryer 1 Apply red glue to the third to second last thread circles of the outer screw thr...

Page 207: ...uum pump pressure gauge leather hose protective gloves two 27 adjustable wrenches 36 wrench Preparation Power off the indoor unit and reclaim all refrigerant from the system Context Figure 6 9 shows the filter dryer before replacement Figure 6 12 shows the filter dryer after replacement Procedure Step 1 Tap Shutdown on the LCD home screen and turn off the smart cooling product switch in the PDC an...

Page 208: ...s and labels take protective measures such as spreading wet cloth around the welding position Do not use face down bonding Figure 6 15 Removing a welded filter dryer 1 Remove the hold hoop from the filter dryer and the pipe clamp from the above of the sight glass using a Phillips screwdriver 2 Weld off the entrance elbow below the filter dryer and the exit above the sight glass and remove the asse...

Page 209: ...entifies the flow direction of the refrigerant Do not use face down bonding Figure 6 16 Installing a threaded filter dryer 1 Weld the entrance of the removed sight glass to the straight tube with a thread connector at the exit of the filter dryer 2 Weld the assembly of the sight glass and exit straight tube of the filter dryer to the original position in the smart cooling product Install the sight...

Page 210: ...lacing the Humidifier Cylinder Prerequisites The humidifier cylinder needs to be replaced A spare humidifier cylinder of the same model is available and functional Tool flat head screwdriver Context The humidifier cylinder can be maintained only from the rear After the system is powered off verify that the pipes will not cause scalding injuries before replacement Procedure Step 1 In diagnostic mod...

Page 211: ...aced Figure 6 17 Removing a humidifier cylinder Step 7 Remove the sensor cable and take out the humidifier cylinder as shown by 3 and 4 in Figure 6 17 Step 8 Install the new humidifier cylinder and start the humidifier Step 9 Power on the NetCol5000 A and choose Maint Diagnostic Mode on the LCD home screen to enter the Diagnostic Mode screen Set the value for the humidifier to 100 and check that t...

Page 212: ...he circuit breaker of the smart cooling product in the PDC and check whether the ports are electrified Use a multimeter to check that the AC voltage of the port is 0 V Exercise caution because the NetCol5000 A is still energized when it is being shut down on the LCD Step 2 Open the rear door and remove the air filter Step 3 Remove all cables and terminals connected to the electric control box Step...

Page 213: ...placing the T H Sensor Prerequisites The T H sensor needs to be replaced A spare T H sensor of the same model is available and functional Context The T H sensor can be maintained only from the rear Procedure Step 1 Tap Shutdown on the LCD home screen Exercise caution because the NetCol5000 A is still energized when it is being shut down over the LCD Step 2 Open the rear door and remove the air fil...

Page 214: ...he rear door End 6 5 11 Replacing the Module Prerequisites The module needs to be replaced A spare module of the same model is available and functional Context The new module must be installed in the same slot as the faulty module Otherwise the smart cooling product may fail to work properly Before replacing a main control module disconnect the network cable from the module To replace the main con...

Page 215: ...ontrol module 2 Auxiliary power supply module 3 Reserved 4 PSU Procedure Step 1 Tap Shutdown on the LCD home screen and turn off the smart cooling product switch in the PDC Exercise caution because the NetCol5000 A is still energized when it is being shut down over the LCD Step 2 Open the rear door and remove the air filter Step 3 Flip the clip on the module downwards as shown by 1 in Figure 6 21 ...

Page 216: ... the air filter and close the rear door End 6 5 12 Optional Replacing the Liquid Level Detector Prerequisites The liquid level detector needs to be replaced A spare liquid level detector of the same model is available and functional Tool Phillips screwdriver Context Components and working principle A liquid level detector is composed of the conductor outer jacket liquid level detector switch and c...

Page 217: ...echnologies Co Ltd 209 Figure 6 22 Liquid level detector 1 Low liquid level detector 2 High liquid level detector Procedure Step 1 Tap Shutdown on the LCD home screen Exercise caution because the NetCol5000 A is still energized when it is being shut down over the LCD Step 2 Open the front door and remove the water pan cover as shown in Figure 6 23 ...

Page 218: ...r of the liquid level detector disconnect the interconnection terminal of the liquid level detector and then remove the sheet metal fastener of the liquid level detector as shown in Figure 6 24 Figure 6 24 Removing screws from the sheet metal fastener of a liquid level detector Step 4 Use a Phillips screwdriver to remove the screws that secure the high liquid level detector and remove the high liq...

Page 219: ...l detector Step 6 Tighten screws connect cables install the water pan cover and close the front door End 6 5 13 Replacing the Water Pump Prerequisites The water pump needs to be replaced A spare water pump of the same model is available and functional Tools flat head screwdriver socket wrench Before removing the water pump drain water from the water pan completely Context The water pump can be mai...

Page 220: ...Before removing the water pump block the water inlet pipe and drainpipe of the water pump to prevent water overflowing out of the water pan and water pipe At the front end of the water pump block the drain outlet shown in Figure 6 26 of the water pan using a proper object such as a cloth based on the actual condition At the rear end of the water pump bend the white drainpipe shown in Figure 6 27 a...

Page 221: ...Water pump drainpipe Step 3 Use a flat head screwdriver to remove the two hose clamps from the pipe and remove the hoses at the water inlet and outlet of the condensate pump as shown in Figure 6 28 Figure 6 28 Removing hose clamps from a pipe Step 4 Use a socket wrench to remove the two M6 screws from the sheet metal fastener of the water pump and pull out the water pump assembly as shown in Figur...

Page 222: ...crewdriver to remove the hose clamp from the water pump and then remove the pump as shown in by 1 and 2 in Figure 6 30 Figure 6 30 Removing a water pump Step 6 Install a new water pump and reinstall the water pump assembly in the cabinet Connect the water pipe and secure it using a hose clamp Connect the water pump power cable Step 7 Remove the blockage from the water pan reinstall the water pan c...

Page 223: ...tructions in the ACC Software Upgrade Guide Tool Phillips screwdriver Procedure Step 1 Tap Shutdown on the LCD home screen Exercise caution because the NetCol5000 A is still energized when it is being shut down over the LCD Step 2 Open the front door and disconnect cables Step 3 Hold the LCD screen from the front remove the four screws from the screen using a Phillips screwdriver and then remove t...

Page 224: ...In row Air Cooled Smart Cooling Product User Manual 208 V 6 System Operation and Maintenance Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 216 Step 5 Connect the cable to the LCD and close the front door End ...

Page 225: ...ei Technologies Co Ltd 217 A Acronyms and Abbreviations A ACC Advanced cooling controller C CAN Controller area network D DC Direct current DIP Dual in line package E EC Electronic commutation EEV Electronic expansion valve H HP High pressure HT High temperature L LP Low pressure LT Low temperature P PTC Positive temperature coefficient ...

Page 226: ...r Cooled Smart Cooling Product User Manual 208 V AAcronyms and Abbreviations Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 218 PSU Power supply unit R RCCB Residual current circuit breaker U USB Universal Serial Bus ...

Page 227: ...er Manual 208 V B Base Dimensions Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 219 B Base Dimensions The following figures show the smart cooling product indoor unit base dimensions Figure B 1 Base installation dimensions without an enclosure frame ...

Page 228: ...000 A021 In row Air Cooled Smart Cooling Product User Manual 208 V B Base Dimensions Issue 03 2020 01 10 Copyright Huawei Technologies Co Ltd 220 Figure B 2 Base installation dimensions with an enclosure frame ...

Page 229: ...ut of the components in the cooling system Figure C 1 Layout of the Cooling System 1 Compressor 2 High pressure sensor 3 Discharge temperature sensor 4 High pressure switch 5 Oil separator 6 Check valve 7 Discharge pipe needle valve 8 Oil trap 9 Outdoor unit 10 Inverted trap 11 Liquid pipe needle valve 12 Filter dryer 13 Liquid pipe temperature sensor 14 Sight glass 15 Electronic expansion valve 1...

Page 230: ...or 23 Low pressure sensor In Figure C 1 the pipelines in solid lines are installed by Huawei before delivery In Figure C 1 the pipelines in dashed lines are to be routed onsite by technical personnel Huawei does not provide the oil trap and inverted trap However to ensure the normal operating and easy maintenance of the cooling system it is recommended that you use these two components ...

Page 231: ... Huawei Technologies Co Ltd 223 D Electric Control Box Layout Figure D 1 Electric Control Box Layout Table D 1 Electric Control Box Layout NO Name and Function A Front view of the electric control box 1 Main power supply port AC1 2 Backup power supply port AC2 3 Main contactor control switch MD1 4 Backup contactor control switch MD2 ...

Page 232: ...connection is not required onsite 10 Outdoor unit power AC3 11 Fuse FU1 oil belt fuse Contactor fuse FU2 and FU3 12 Transformer input port X201 13 Transformer output port X202 N A N A N A B Signal cable terminal block X301 1 Outdoor unit control Outdoor unit control dry contact 2 Outdoor unit control dry contact 3 Smoke sensor Smoke sensor power supply 12 V DC 4 Smoke sensor feedback 5 Port for re...

Page 233: ...0 01 10 Copyright Huawei Technologies Co Ltd 225 NO Name and Function 2 RS485 control RS485 SW 3 GND ISO 4 Dry contact alarm 1 Dry contact alarm 1 5 Dry contact alarm 1 6 Dry contact alarm 2 Dry contact alarm 2 7 Dry contact alarm 2 8 N A N A C Fan breaker Fan1 to Fan6 between the two groups of fans on the front door ...

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