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58 Chapter 6 System O&M

DM Series 16kW Air Conditioner User Manual

Fan speed controller board
Bolt 2

Bolt 1

螺钉1（M4×10，共7颗）

螺钉2

风机转速控制器单板

散热片

Heat sink

Figure 6-6 Removing the fan speed controller board

6.2.2 Troubleshooting

See Table 6-3 for alarm troubleshooting.

Table 6-3 Table of alarm troubleshooting

Alarm

number ID

Alarm name

Cause

Troubleshooting

A00

Phase loss

alarm

1. One phase or two phase of

three-phase voltage is lost

1. Measure that the three-phase voltage is correct

2. The input connection is reversed

2. Check the input order of wire

3. The fan speed controller board has

hardware fault

3. Replace the fan speed controller board and compare

the result of two boards

A01

SCR

over

temperature

1. The fan cannot run normally

1. Check that the fan runs normally

2. The fan speed controller board has

hardware fault

2. Replace the fan speed controller board and compare

the result of two boards

A02, A03

Fan 1 over

temperature,

Fan 2 over

temperature

1. The fan cannot run normally

1. Check that the fan runs normally

2. The AC contactor supplying power

for fan has fault or its wire cuts off

2. Check the wiring of AC contactor; detect the auxiliary

contact state of AC contactor

3. Fan speed controller board has

hardware fault (the detecting circuit or

SCR power supplying circuit has fault)

3. Replace the fan speed controller board and compare

the result of two boards

A04

Pressure

sensor

failure

1. The pressure sensor is not installed

or its terminal connection is poor

1. Check the wiring of pressure sensor

2. Jumper caps are not used at shorting

terminals J17 and J18 of current

pressure sensor

2. Install the jumper cap when the current pressure

sensor is configured

3. The pressure sensor failed

3. Replace the pressure sensor and compare the result

of two boards

4. The fan speed controller board has

hardware fault

4. Replace the fan speed controller board and compare

the result of two boards

A05

EEPROM

read fault

The fan speed controller board has

hardware fault

Replace the fan speed controller board and compare

the result of two boards

A06

SCR

temperature

sensor

failure

1. The SCR temperature sensor is not

installed or its terminal connection is

poor

1. Check the wiring of SCR temperature sensors (J8

SCRTemp, see Figure 3-1 for whose position )

2. The SCR temperature sensor failed

2. Replace the SCR temperature sensor and compare

3. The fan speed controller has

hardware fault

3. Replace the fan speed controller board and compare

the result of two boards

A07

Abnormal

frequency

1. The frequency of power supply

voltage is wrong

2. The fan speed controller has

hardware fault

Replace the fan speed controller board and compare

the result of two boards

Содержание DM Series

Страница 1: ...Precision Cooling For Business Critical Continuity User Manual Liebert DM 16kW Air Conditioner ...

Страница 2: ...port Users may contact the nearest Emerson local sales office or service center Copyright 2013 by Emerson Network Power Co Ltd All rights reserved The contents in this document are subject to change without notice Emerson Network Power Co Ltd Address No 1 Kefa Rd Science Industry Park Nanshan District 518057 Shenzhen China Homepage www emersonnetworkpower com cn E mail support emersonnetwork com c...

Страница 3: ......

Страница 4: ...gement 6 2 3 2 System Installation Sketch Map 6 2 3 3 Mechanical Paremeters 7 2 4 Installing Indoor Unit 9 2 4 1 Preparing Equipment room 9 2 4 2 Installation Space 9 2 4 3 Requirement Of Maintenance Space 10 2 4 4 Installation Procedures 11 2 5 Installing Outdoor Unit 11 2 5 1 Installation Notes 11 2 5 2 Space Requirements 12 2 5 3 Mounting base dimension 12 2 6 Piping 14 2 6 1 General 14 2 6 2 C...

Страница 5: ... Commissioning Complete Inspection 34 Chapter 5 Precision Air Conditioner Controller 35 5 1 Appearance 35 5 2 Control Button 35 5 2 1 Function Description 35 5 2 2 Operation Example 35 5 3 Indicator 36 5 4 Control Interface 36 5 4 1 OFF Interface 36 5 4 2 MAIN Interface 37 5 4 3 Password Interface 38 5 5 Menu Structure 38 5 5 1 Guide On Finding Menus 38 5 5 2 Main Menu 38 5 5 3 Alarm Menu 39 5 5 4...

Страница 6: ...6 2 Operation and maintenance of outdoor unit 57 6 2 1 Maintenance 57 6 2 2 Troubleshooting 58 Chapter 7 Troubleshooting 59 Appendix 1 SiteMonitor Software Introduction 63 Appendix 2 Circuit Diagram of DME16 64 Appendix 3 Circuit diagram of DMC16M2 65 Appendix 4 Menu Structure 66 Appendix 5 Alarm Control Menu Table 67 Appendix 6 Parameter Setting Table 68 ...

Страница 7: ......

Страница 8: ...unit and outdoor unit With the standard condenser unit the Liebert_DM 16kW air conditioner can reduce noise pollution to the minimum while meeting system cooling requirement 1 3 Main Components 1 3 1 Indoor Unit The indoor unit of the Liebert_DM 16kW air conditioner includes compressor evaporator electric reheat fan controller infrared humidifier thermal expansion valve sight glass and drier filte...

Страница 9: ...nal rotor axial fan with unique sickle shape metal fan leaf has the superior aerodynamic property The six and eight pole fan with specially designed draught ring makes the air flow noise through the fan leaf significant reduction The high performance three phase motor that is customized for the base station power grid environment can be applicable to the wide voltage range and has the higher relia...

Страница 10: ... 15 45 Protection level outdoor unit IP55 Altitude 1000m Above that derating is required Operation voltage range 380V 10 15 3N 50Hz 1 4 2 Storage Environment Table 1 2 Storage enviroment requirement Item Requirement Storage environment Indoor no dust Environment humidity 5 RH 85 RH non condensing Environment temperature 40 70 Storage time Total transportation and storage time should not exceed 6 m...

Страница 11: ...mended to use mechanical handbarrow such as electric forklift when unpacking and moving the equipment to the place most close to the installation site Insert the tines of the forklift below the pallet as shown in Figure 2 1 Align the tines to the center of gravity to prevent the unit from falling over Figure 2 1 Forklift removal When moving the indoor unit keep the obliquity within 75 105 as shown...

Страница 12: ...ck against the packing list If any parts are found missing distorted or damaged please report to the carrier immediately If any covert defects are found please report to the carrier and the distributor 2 2 Installation Notes To realize the designed performance and maximum product life the installation must be correct This section should be used in conjunction with local industry standards for mech...

Страница 13: ...itch Condenser coil Check valve Distributor Traps every 7 5m of vertical lift 1 circuit only Figure 2 6 General arrangement diagram of air cooled series Note 1 Factory piping 2 Field piping by others 3 Components are not supplied by Emerson but are recommended for proper circuit operation and maintenance 4 Components are required when the equivalent length exceeds 30m 2 3 2 System Installation Ske...

Страница 14: ...nser Humidifier The earth surface Max 7 5 m Max 20m water in water out Supporting bar Figure 2 7 Condenser installed higher than compressor Supporting bar Slope dicharge Heat insulation floor Seal Outdoor unit Floor Condenser water out Humidifier water in The earth surface Max 5m Slope liquid Indoor unit Figure 2 8 Compressor installed higher than condenser 2 3 3 Mechanical Paremeters Indoor unit ...

Страница 15: ...nce of the plenum is shown in Figure 2 10 The dimensions are listed in Table 2 1 C B A Figure 2 10 Appearance of the plenum Table 2 1 Dimensions of plenum A B C 867 853 400 600 optional Note If the height of the plenum selected for air conditioner unit exceeds 600mm consult the factory for non standard production Outdoor unit The appearance of outdoor unit is shown in Figure 2 11 The dimensions an...

Страница 16: ...nters the equipment room may increase the load of heating cooling humidifying and dehumidification of the system It is recommended that the inhalation of outdoor air be kept below 5 of the total indoor airflow 4 All the doors and windows should be closed and the seams should be as narrow as possible 2 4 2 Installation Space Note Liebert_DM 16kW air conditioner system will generate condensed water ...

Страница 17: ...above the cabinet Figure 2 13 shows the installation place of the indoor unit Good place Unit Unit Note The reserved maintenance space while installing 600 600 600 Bad place Figure 2 13 Installation place of indoor unit unit mm 2 4 3 Requirement Of Maintenance Space Leave more than 600mm of maintenance space in the front and two sides of the indoor unit as shown in Figure 2 13 ...

Страница 18: ...ion is only a reference It should be determined accroding to your actual requirements during making the mounting base Two bay Three bay Note The external side boards of the unit cannot bear weight Take this into consideration while selecting angle steel and fixing holes As the value of H exceeds 450mm please strengthen the mounting base or contact Emerson Network Power Co Ltd 2 Lay a layer of rubb...

Страница 19: ...around the condenser air outlet 2 The 600mm service spaces are required on the four sides of the condenser The condenser needs sufficient installation and service space around the installation place The detailed space requirements are shown in Figure 2 15 and Figure 2 16 600 1200 450 Air flow Air flow Figure 2 15 Horizontal installation space requirement unit mm 600 4000 Air flow Figure 2 16 Verti...

Страница 20: ...lation The mounting base for vertical installation is shown in Figure 2 18 and the dimensions of each model are listed in Table 2 4 250 102 452 490 a 20 20 Installation hole 4 pcs Amplified part figure Figure 2 18 Mounting base dimensions for vertical installation top view unit mm Table 2 4 Mounting base dimensions for vertical installation unit mm Model Dimension a DMC16M2 1280 Note 1 The install...

Страница 21: ...than indoor unit Max 5m 2 The pipe sizes recommended in Table 2 6 are equivalent lengths which has included the resistance brought about by bends and valves You should confirm that the sizes are appropriate for the site conditions Table 2 6 Equivalent lengths of partial components Outer Diameter OD of liquid pipe inch Equivalent length m 90 bend 45 bend T type three way 3 8 0 21 0 10 0 76 1 2 0 24...

Страница 22: ...urn isolation valve is fitted to the supply water pipe The infrared humidifier water supply pipe reserves a copper pipe OD 6 35mm see Figure 2 20 with a 1 4 copper nut at the end of the pipe Take out of the 1 4 1 2 screw thread copper connector from the accessory bag and screw the connector onto the copper pipe You can also select other connection modes according to the site condition Make sure th...

Страница 23: ...er plus the loss of head pressure due to elevation above the condenser If the liquid temperature is 38 the static pressure loss is 11kPa 1 6 psi per meter of lift Ball valve liquid line Ball valve discherge line Figure 2 21 Connection of discharge pipe liquid return pipe Considering the effect of the pipe OD to the system pressure drop the pipe OD of indoor unit and outdoor unit should be determin...

Страница 24: ... pipe refrigerant amount kg m Pipe OD mm Unit length liquid pipe refrigerant amount kg m 9 52 0 060 19 0 261 12 7 0 112 22 0 362 16 0 181 28 6 0 618 2 Adding POE refrigerant oil The added refrigerant will dilute the POE refrigerant oil in the system undermining the lubricating and cooling effects of the POE refrigerant oil Therefore more POE refrigerant oil should be added See the formula below Am...

Страница 25: ...ifier water in K Knock out 250 120 F Unit set screw LL DL Liquid line discharge line air cooled models WI WO Condenser water inlet and outlet water cooled models Figure 2 23 Base cutout location of downflow models Side panel cotout locations The knock out dimensions of side panels are shown in Figure 2 24 and Figure 2 25 95 20 59 50 8 53 45 49 2 4 Ф 64敲落孔 2 Ф 25敲落孔 4 Φ64 knock out 2 Φ25 knock out ...

Страница 26: ...ommissioning remove the three fixing plates then restore the washers and bolts The fastening torque of the bolts is 12 1 N m Removing transport fastener of fan compoents 1 Upflow unit The motor base of the fan is designed with a semi free self tension structure to minimize the fan operation noise and prolong the belt life During the transportation to protect the semi free structure from failing or...

Страница 27: ...nents before delivery Before the unit operation remove the protection foam and connect the cable of the high water level test switch If you do not operate following the instruct bellow the infrared humidifier will not work normally and even the fire may be caused The detailed operation procedures are as follows 1 Cut the cable tie and remove the protection foam fixed under the pump as shown in Fig...

Страница 28: ...t cover plate of the infrared humidifier connection box and fasten the self tapping screws 5 Remove the rubber string bound on the floating pole and the high water level test switch The floating pole and the infrared humidifier high water level test switch are tightly bound together with a rubber string before delivery as shown in Figure 2 32 Remove the rubber string before the unit operation Othe...

Страница 29: ...installed vertically and the installation fasteners have been fixed 3 The pipes connecting the indoor unit and outdoor unit have been connected and the ball valves of indoor unit and outdoor unit have been opened completely 4 The condensate pump if needed has been installed 5 The draining pipe has been connected 6 The water supply pipe for infrared humidifier has been connected 7 All pipe joints h...

Страница 30: ...requirement 380Vac 50Hz 4 The electrical installation must be completed by trained personnel 5 Before the wiring use a multimeter to measure the power supply voltage and make sure that the power supply has been switched off 3 2 Wiring Of Indoor Unit 3 2 1 Locating Electrical Interface Of Indoor Unit Open the front door of the indoor unit and you will see the interfaces of the electrical control bo...

Страница 31: ...6 95 91 97 37B 38C 38B 93 92 81 80 24 38 50 72 71 77 12 11 78 56 55 70 73 71A 70A 58 82 83 88 42 44 43 41 41 43 83 88 89 75 76 94 95 96 97 91 92 93 80 81 11 12 77 78 72 73 42 38C 44 84 82 58 59 37C 85 51 38 38B 37B 37 24 50 56 55 70 70A 71 71A Short connecting line no short line if the remote shut down is connected 50 51 55 is defined alarm terminals Connecting with common alarm Connecting with sm...

Страница 32: ... to the terminals you should set the corresponding customized alarm through the microprocessor See 错误未找到引用源错误未找到引用源 for details When the contactor is open and there is no external alarm the input state of the customized terminal is open But when the contactor is closed and the external alarm is raised the input state of the customized terminal will be shorted At this time the system will raise ...

Страница 33: ...egulations 2 Connecting cables See Figure3 5 and Appendix 3 Circuit Diagram of DMC16M2 for the connections of external power cables Waterproof connector of external 外部电源进线防水接头外部电源接入端单风机风机转速控制器单板 Accessing terminal of external Fan speed controller board power supply single fan power accessing lines Water joint of external power cables Figure 3 5 Connection figure of single fan external power ca...

Страница 34: ...al of 12V power Pin 2 input terminal of 4mA 20mA pressure current signal J14 HP2 Input terminal of current pressure sensor 2 J17 J18 Shorting jumpers of current pressure sensor Current pressure sensor the short circuit ring must be installed on the shorting jumpers Voltage pressure sensor the open state of short jumpers must be kept J5 Out Temp Input terminal of environment temperature sensor spar...

Страница 35: ...g power is closed RS232 serial communication port RS232 serial communication port provides a port to interface the computer using factory defined protocol It is used in factory commissioning and maintenance Keys and LCD The keys and LCD which can realize the functions in Table 3 5 provide the HMIs for maintenance personnel Refer to 错误未找到引用源错误未找到引用源 for the detailed operations of keys and LCD HM...

Страница 36: ...nly an example and the actual value is determined by the sampling result F01 16 1 F01 16 1 Main Menu Interface Press the ESC key on the initial interface the main menu interface will appear on the LCD The main menu interface includes the analog main menu interface current alarm main interface historical alarm main menu interface and configuration main menu interface Press the UP key and DOWN key t...

Страница 37: ...re 1 and pressure 2 88 8 will be shown when the pressure sensor is disabled the ID and values circulary Current alarm main interface Press the ENT key to enter the current alarm submenu interface when the current main interface shows A the symbol of current alarm main menu The switching operation processes and orders of the current alarm submenu are shown in the following figure See Table 6 3 for ...

Страница 38: ...e present historical alarm 0 is the 100th historical alarm X is the historical alarm ID When there is no alarm will be shown Configuration data main menu interface Note The configuration data main menu interface is designed only for maintenance personnel to set parameters others are prohibited to operate it Press the ENT key to enter the configuration data submenu interface when the current main i...

Страница 39: ...test 3 The total charge has been roughly calculated If the pipe is too long the rated amount of refrigerant oil should have been charged into the system 4 The water supply drain pipe system of the humidification system has been reliably connected the material requirement is met and the leak detection has been done 5 The heating tape of the compressor has been preheated for over 12hr 6 Make sure th...

Страница 40: ... the humidifier starts to work If the humidifier stops working when the humidity setting is lower than the indoor RH it means the humidifying function is normal Note After the test restore the temperature and humidity settings to the defaults or the original settings 5 Pump the cooling system vacuum to 30in Hg pumping time 3hrs and hold the state for 4hr The pressure should not rise and the sight ...

Страница 41: ...or dehumidification the dehumidification solenoid valve switches on and the dehumidification indicator Q3 on the control panel turns on Then change the humidity setting higher than the indoor RH If the dehumidification solenoid valve switches off and the dehumidification indicator Q3 turns off it means the dehumidification function is normal Note that during the commissioning process if the indoor...

Страница 42: ...ble 5 1 Table 5 1 Control button functions Button Function descriptions ON OFF Turn on or off the controller ESC Return to the previous menu Abort parameter change Press and hold the button to enter the help menu for listing the max min and default values and a brief description of the data field Upon alarms press the button to silence the audible alarm UP Move the cursor up or increase the parame...

Страница 43: ...revious menu interface Note After changing the parameter if you do not press the ENTER button to validate the changed parameter the change will be invalid 5 3 Indicator The controller provides two indicators running indicator and alarm indicator see Figure 5 1 Their detailed functions are described in Table 5 2 Table 5 2 Function descriptions of indicators Indicator Color Status Function descripti...

Страница 44: ...h Unit working icons Actual temperature Temperature setpoint Actual humidity Humidity setpoint Figure 5 3 MAIN interface Unit working icon The MAIN interface provides three types of unit working icons including dynamic running state icon locking state icon and on off standby state icon These icons inform the operators of the operation mode in which the AC unit is working The icons and their defini...

Страница 45: ...bmenu 5 5 1 Guide On Finding Menus The menu structure of the controller is relatively complex To find the required menu you can use the guides in Table 5 5 or refer to Appendix 4 Menu Structure Figure Table 5 5 Guide on finding menus Task Recommended title Inquire or set the menus relating to alarm 5 5 3 Alarm Menu Set temperature or humidity 5 5 4 Set Point Control Inquire the input status output...

Страница 46: ... 5 3 Alarm Menu Select Main Menu 1 2 Alarm Menu to enter the Alarm Menu menu This menu haves five submenus as shown in Figure 5 6 Alarm Menu Alarm History Alarm Control Alarm Set Point Alarm Resets Alarm Status D01 I10 Figure 5 6 Alarm menu interface Alarm status The Alarm Status menu is used to record the current active alarm status including Active Alarms total alarm number ALM alarm SN alarm ty...

Страница 47: ...arm History 3 NO Figure 5 9 Alarm resets interface Alarm control The settings of the Alarm Control menu will not be lost when the power fails You can browse and set all menu items For detailed submenus refer to Appendix 5 Alarm Control Menu Table For detailed setting ranges of menu items refer to Appendix 6 Parameter Setting Table The Alarm Control menu is displayed in 16 screens Press the UP or D...

Страница 48: ...ings of the Alarm Set Point menu will not be lost when the power fails For detailed setting ranges of menu items refer to Appendix 6 Parameter Setting Table Note It is not recommended to change the defaults If the change is necessary change them under the guidance of trained professions Low TEMP Alarm 15 High TEMP Alarm 35 C C o Alarm Set Point 2 D01 I10 o High HUM Alarm 65 rH Low HUM Alarm 35 rH ...

Страница 49: ...atus The Input Status menu is displayed in six screens Pressing the UP or DOWN button can select the required menu item Taking the first screen as an example the interface is shown in Figure 5 16 For detailed menu items refer to Appendix 4 Menu Structure HP2 Off LP1 Off HP1 Off LP2 Off Input Status 1 6 D01 I10 Figure 5 16 Input status interface The menus NTC0 NTC1 NTC2 and NTC3 in the sixth screen...

Страница 50: ...enu is displayed on two screens as shown in Figure 5 20 Only factory technicians can access the latter seven menu items For detailed setting ranges of the menu items refer to Appendix 6 Parameter Setting Table TEMP Control 1 2 Control Mode 2 Proportion I Action 3 0090s Sample Time 3 025 s DeadBand 1 0 C D Action 3 0005s D01 I10 o Integral MAX 3 100 Differential MAX 3 100 Proportional MAX 3 100 PID...

Страница 51: ...g interface 1 Config menu The Config Menu menu is shown in Figure 5 24 Only factory technicians can access the menu Heat Type EH Heat QTY 1 HUM Type IRL Fan QTY 3 Cool Type Air Comp QTY 2 Config Menu 3 D01 I10 Figure 5 24 Config menu interface 2 Delay setup The Config Menu menu is displayed on two screens as shown in Figure 5 25 Delay Setup 2 1 2 Fan Stop Delay 030s Comp MIN Stop Time 180s Comp MI...

Страница 52: ...nel to view whether the system is working normally Commission Mode Manual Mode Diagnostic Mode Service Mode 2 D01 I10 Figure 5 29 Service mode interface The Diagnostic Mode Commission Mode and Manual Mode menus have the same submenu Taking Diagnostic Mode menu as an example the menu interface is shown in Figure 5 30 Diagnostic Mode 2 DeHUM Off HUM Off Cool2 Off LLBP2 Off Heat2 Off LLBP1 Off Heat1 ...

Страница 53: ...enu items refer to Appendix 6 Parameter Setting Table Password Setup D01 I10 Level 2 2 Level 1 1 Figure 5 32 Password setup interface Parameter reset The Parameter Reset interface is shown in Figure 5 33 For detailed setting ranges of the menu items refer to Appendix 6 Parameter Setting Table Restored Backup No Restored Default No Parameter Backup No Parameter Reset 2 D01 I10 Figure 5 33 Parameter...

Страница 54: ... T 06 10 54 Figure 5 36 Return airTEMP graph interface 2 Select Graph Menu Return Air HUM to enter the Return Air HUM submenu as shown in Figure 5 37 In the graph current humidity is the origin time is the horizontal axis and humidity is the vertical axis The graph can display the humidity changes from 6h to 48h through zooming operation and controlling the cursor movement Pressing the UP or DOWN ...

Страница 55: ...n On Off Record On Off Record 3 1 2 D00 I00 Heat2 On Off Record HUM On Off Record Heat1 On Off Record On Off Record 3 2 2 D00 I00 Figure 5 40 On off record interface The fan comp1 comp2 heat1 heat2 and HUM have the same submenus Taking the Fan On Off Record menu for example the submenu interface is shown in Figure 5 41 The menu items include Records total record number No record SN and Time fan on...

Страница 56: ...e Units QTY 01 Rotation Frequency NONE D00 I00 04 12 On 08 00 05 13 Standby 09 01 06 14 10 02 07 15 11 03 Team Work 2 2 2 D00 I00 Off Disconnected Figure 5 42 Team work interface 5 6 Help Menu Press and hold the ESC button in any menu interface and the help interface will appear as shown in Figure 5 43 D1 Version V1 000 I1 Version V1 010 Emerson Network Power D00 I00 Figure 5 43 Help interface ...

Страница 57: ...ompressed air 4 Check the closing of contactors for arcs or signs of burning Replace the contactor if necessary 5 Fasten all the electric connection terminals 6 Check that the sockets and plugs are in good condition Replace those loosened ones Maintenance of control system Carry out visual inspection simple function test and handling over the control parts by referring to the following items 1 Vis...

Страница 58: ...ation for the water leak detector is shown in Figure 6 1 Drain pipes on the ground Liebert system Location of leak detection sensor Location of leak detection sensor Figure 6 1 Recommended location for the water leak detector Note 1 Before connecting any mechanical parts or cables make sure the power supply of the control unit has been disconnected 2 Do not use the water leak detector adjacent to ...

Страница 59: ...gns of wearing when adjusting the belt Roll the belt and observe the motion of the fan bearing If any abnormal displacement is observed replace the bearing Belt Measure the belt tension with a tension meter You can also press down the belt at the middle point between the two pulleys The displacement should be 0 5 1 If the belt is found worn out or distorted replace it with a new belt The new belt ...

Страница 60: ... Operation of the autoflush The autoflush control program is an integral part of the infrared humidifier system The program automatically controls a water makeup valve to maintain the proper water level in the humidifier pan during operation When a call for humidification exists the program performs a series of checks The first check is to see how long the infrared humidifier has been off If the o...

Страница 61: ...utomatic reset switch Upflow electric reheat Manual reset switch Automatic reset switch Downflow electric reheat Figure 6 5 Upflow electric reheat and downflow electric reheat 6 1 7 Cooling System Check the cooling system components once a month to make sure that the system function is normal and there are no signs of wearing Because the failure or damage of components is usually accompanied by co...

Страница 62: ...eedle valve of the suction pipe 3 Evaluate the pressure difference between the two locations thermo bulb and needle valve of the suction pipe 4 Add the sum of the preceding two pressures with the standard local air pressure to find out the saturation temperature corresponding to the saturation pressure 5 The difference between the suction temperature at the thermo bulb and the saturation temperatu...

Страница 63: ...mpressor motor is usually burned because the system is not cleaned properly For electric faults You can tell an electric fault by the unpleasant smell If serious burning occurred the lubricant will appear black and become acid When electric fault occurs and the compressor motor is entirely burned the system must be cleaned to remove the acid material from the system and to avoid such faults in the...

Страница 64: ...ion pipes with fastening objects 2 Check that there is no oil on the accessories of all refrigeration pipes and make sure that the pipes do not leak Heat exchanger 1 Clean the fin of heat exchanger regularly 2 Clean the fin of heat exchanger with compressed air or fin detergent weakly alkaline if the condenser air flow is blocked The direction of inverse air flow is good when the compressed air is...

Страница 65: ... the detecting circuit or SCR power supplying circuit has fault 3 Replace the fan speed controller board and compare the result of two boards A04 Pressure sensor failure 1 The pressure sensor is not installed or its terminal connection is poor 1 Check the wiring of pressure sensor 2 Jumper caps are not used at shorting terminals J17 and J18 of current pressure sensor 2 Install the jumper cap when ...

Страница 66: ... board or take down the F4 fuse tube to see whether or not it has blown Air flow lose switch alarm action Check whether the belt is loose or the fan has faulty Fan failure Replace the fan Table 7 2 Troubleshooting of compressor and cooling system Symptom Possible causes Handling method Compressor does not start Power not on shutdown Check the main power switch fuse or circuit breaker and the conne...

Страница 67: ...e of compressor or pipes loosened Fasten the fixture Compressor over temperature Too high compression ratio Check the settings of the HP switch and LP switch and make sure the condenser is not clogged Check that the fans of the evaporator and condenser are normal Suction temperature too high Regulate the expansion valve or add proper amount of refrigerant Table 7 3 Troubleshooting of dehumidificat...

Страница 68: ...e bearings are not worn out ___ 3 The belt tension and condition Compressor ___ 1 Check for leakage ___ 2 Listen to the operation sound observe the operation vibration Air cooled condenser if used ___ 1 Check the fins cleanness ___ 2 The fan base should be firm ___ 3 The fan vibration absorber is not deteriorated or damaged ___ 4 The SPD board should be effective in the storming seasons the SPD bo...

Страница 69: ...t pipes are properly supported ___ 8 Check and fasten the circuit connections Water cooled condenser if used ___ 1 Clean the water pipe system ___ 2 Check the water flow regulating valve ___ 3 Check for leakage Refrigeration cycling system ___ 1 Check the suction pressure and suction superheat degree ___ 2 Check the discharge pressure and condensing subcooling degree ___ 3 Check the refrigerant pi...

Страница 70: ...tion Current data query Current equipment operating data and alarm data can be queried Alarm notification SiteMonitor can send email short message to or phone the user in the event of an alarm Remote control This function is available only for equipment supporting remote control Remote adjustment This function is available only for equipment supporting remote adjustment Real time monitoring of env...

Страница 71: ...Blue CIRCUIT DIAGRAM C NO N C C NO Isolation terminal CP1 MCB CP1 3 2 4 6 CP1 contactor A1 A2 2 1 22 21 4 3 6 5 1 3 5 Red CP1 A1 CP1 A1 CP1 A2 LP1 COM LP1 NC HP1 NC N C NO COM DLT1 NO COM NC Discharge line temperature switch 1 High pressure switch 1 Low pressure switch 1 DLT1 COM N N 71 70 71 70 CP1 NO1 CP1 NO2 8 7 14 13 CP1 NO1 Yellow Green PE PE PE PE Crankcase heater HP1 COM NO COM MF1 NO1 HUM ...

Страница 72: ...vertically the lower header connects to pressure sensor 1 and the upper header connects to pressure sensor 2 4 Both external power and compressor signal are wired in field 5 The compressor signal cables should be in parallel and then connected into the electrical control board when the indoor unit is a dual circuit Fan Isolation switch Black Black Black Black Black Black Black Black Black Black Bl...

Страница 73: ...refill time Run interval HUM time Fill time Flush time MAX current Heating disable HUM T disable deHUM General alarm Remote shutdown Dead Band Analog input 1 Analog input 2 Analog input 3 HUM control Input setup System config Config menu Delay setup Comp QTY Heat type Air loss detect Fan start delay Fan stop delay Comp MIN stop time LP delay time Comp Change Over Comp Swap Interval Comp Start Inte...

Страница 74: ... Unit 06 disconnected Unit 07 disconnected Unit 08 disconnected Unit 09 disconnected Unit 10 disconnected Unit 11 disconnected Unit 12 disconnected Unit 13 disconnected Unit 14 disconnected Unit 15 disconnected HP1 lock HP2 lock LP1 lock LP2 lock High TEMP Low TEMP High HUM Low HUM IR HUM error OEM HUM error HUM low water Fan hours exceeded C1 hours exceeded C2 hours exceeded Heat1 hours exceeded ...

Страница 75: ...rt Cycle2 On On Event Air Loss On On Event Clogged Filter On On Event Remote Shutdown On On Event T H Board Error On On Event Unit 00 Disconnected On On Event Unit 01 Disconnected On On Event Unit 02 Disconnected On On Event Unit 03 Disconnected On On Event Unit 04 Disconnected On On Event Unit 05 Disconnected On On Event Unit 06 Disconnected On On Event Unit 07 Disconnected On On Event Unit 08 Di...

Страница 76: ...oint Control Return Air TEMP 24 C 15 C 35 C TEMP Sensitivity 3 C 1 C 10 C Return Air HUM 50 RH 20 RH 80 RH HUM Sensitivity 5 RH 1 RH 10 RH System Status Input Status NTC 0 NTC 1 NTC 2 NTC 3 Alarm Enable Enable Enable Disable High TEMP Alarm 35 C 30 C 45 C Low TEMP Alarm 15 C 5 C 20 C TEMP Calibration 0 C 10 C 10 C System Menu TEMP Control DeadBand 0 C 1 C 5 C Control Mode Proportion Proportion PID...

Страница 77: ...itor On Off Enable Enable Disable Password Setup Level 1 0000 0000 9999 Level 2 0001 0000 9999 Parameter Reset Parameter Backup No Yes No Restored Backup No Yes No Restored Default No Yes No Run hours Fan Run Hours Service interval 30000h 0 30000h Hours reset No Yes No Comp1 Run Hours Service interval 30000h 0 30000h Hours reset No Yes No Comp2 Run Hours Service interval 30000h 0 30000h Hours rese...

Страница 78: ... literature Emerson Network Power assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions Emerson Business Critical Continuity and Emerson Network Power are trademarks of Emerson Electric Co or one of its affiliated companies 2013 Emerson Electric Co All rights reserved throughout the world Specifications subject to ch...

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