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CSRA-SVX02A-EN

77

Service & Maintenance

Table 13 — Compressor Circuit Breaker Data

 Fuse Replacement Data

Table 14 lists the replacement fuses for the control circuit, compressors, and 
condenser fans.

Table 14 — Fuse Replacement Data

Unit Size

Number of 

Compressors

Compressor

Capacities

Rated

Voltage

Compressor

RLA

Compressor

LRA

Must Hold

(Amps)

Must Trip

(Amps)

C25

1, 1

10, 15

460

17.1, 25.4

117, 178

20.8, 29.5

23.9, 33.9

C40

4

9

460

17.2

117

18.9

21.7

C60

4

15

460

25.4

178

30.7

35.3

Fuse Replacement Table

Condenser Fan Fuse

Time Delay

1F1 Thru 1F6

Class RK5

15A

Control Power Fuse

1F7

Class K5

6.25 Amp

Compressor Protection Fuse

1F44 & 1F45

Type MTH

6 Amp

Transformer Protection Fuse

1F72 Thru 1F74

Type FLQ

15 Amp

Compressor Crankcase

Heater Time Delay Fuse

9F1, 9F2

Class CC

7.5 Amp

Evaporator Heat Tape

Time Delay Fuse

9F4

Class CC

5 Amp

25T Shorepower Fuse

Time Delay

9F3

Class CC

7 Amp

40T Shorepower Fuse

Time Delay

9F3

Class CC

10 Amp

60T Shorepower Fuse

Time delay

9F3

Class CC

12 Amp

Содержание CSRA025FAF0

Страница 1: ...CSRA SVX02A EN Models CSRA025FAF0 CSRA040FAF0 and CSRA060FAF0 Installation Operation Maintenance 25 40 and 60 Ton Air Cooled Cold Generators 2002 American Standard Inc All Rights Reserved...

Страница 2: ...Water Piping Requirements 23 Main Electrical Power Requirements 24 Chilled Water Piping 24 Final Water Piping Connections 26 Freeze Protection from Ambient Conditions 26 Electrical Cable 35 Electrica...

Страница 3: ...essor Start Up 66 Proper Refrigerant Charge 68 Compressor Crankcase Heaters 72 Low Ambient Damper Adjustment 72 Final System Setup 73 Service Maintenance Compressor Operational Sounds 75 Scroll Compre...

Страница 4: ...or component damage will be minimized It is important that periodic maintenance be performed to help assure trouble free operation A maintenance schedule is provided at the end of this manual Should e...

Страница 5: ...and other options for any specific unit When ordering replacement parts or requesting service be sure to refer to the specific model number serial number and DL number if applicable stamped on the un...

Страница 6: ...6 CSRA SVX02A EN General Information Figure 1a Model Number Description...

Страница 7: ...ed in parallel and utilizes a passive oil management system to maintain proper compressor oil level The condenser coils are aluminum fin mechanically bonded to copper tubing Copper fin coils are optio...

Страница 8: ...tomer binary contacts to satisfy the applicable request for cooling Refer to the following discussion for an explanation of each module function Human Interface Module HI Standard The Human Interface...

Страница 9: ...the operator with their function as they interface with the various modules Refer to the unit s electrical schematic for the specific module connections Lead Lag Standard When Lead Lag is enabled for...

Страница 10: ...three minutes of operation the compressors on that circuit will be locked out and a manual reset diagnostic is initiated Saturated Condenser Temperature Sensors Standard Are analog input devices mount...

Страница 11: ...output will be at 100 10 VDC When the control is at stage 1 the output 0 to 10 VDC will modulate based on the saturated condensing temperature When the low ambient damper option is installed the dampe...

Страница 12: ...Note The unit is wired so the CGM monitors incoming power for proper phase sequencing Observe proper polarity of internal wiring during service procedures Short Cycle Protection Standard If compresso...

Страница 13: ...on the prevailing ambient temperature The relationship between this variable time period and the ambient temperature is linear from a maximum of 5 minutes at 0 F to a minimum of 30 seconds at 65 F The...

Страница 14: ...ed Emergency Stop is a top priority command that will override all other commands received by the UCM A manual reset diagnostic will occur and an indication showing that the unit is shut down due to E...

Страница 15: ...for signs of shipping damage Check for material shortages Refer to Figure 2 Component Layout and Ship with Location If the job site inspection of the unit reveals damage or material shortages file a...

Страница 16: ...service clearances for either a single multiple or pit application These clearances are the minimum distances necessary to assure adequate serviceability cataloged unit capacity and peak operating ef...

Страница 17: ...d down bolts or isolators Follow the instructions under Unit Isolation for proper isolator placement and installation Check with a roofing contractor for proper waterproofing procedures Figure 3 Typic...

Страница 18: ...18 CSRA SVX02A EN Installation Figure 4a C25 Ton Unit Dimensional Data Recommended Clearances...

Страница 19: ...CSRA SVX02A EN 19 Installation Figure 4b C40 Ton Unit Dimensional Data Recommended Clearances...

Страница 20: ...20 CSRA SVX02A EN Installation Figure 4c C60 Ton Unit Dimensional Data Recommended Clearances...

Страница 21: ...oned from Pump End Weight lbs Weight lbs X CSRA010FAF0 10 3800 3820 57 CSRA015FAF0 15 4030 4050 74 CSRA025FAF0 25 6050 6150 83 0 CSRA040FAF0 40 8250 8370 79 0 CSRA060FAF0 60 9300 9615 96 0 Notes 1 Mou...

Страница 22: ...t lift the unit to ensure it is properly rigged and balanced make any necessary rigging adjustments 4 Lift the unit and position it into place Leveling the Unit Use the unit base rail as a reference L...

Страница 23: ...ns of this manual Verify that the power supply complies with the unit nameplate specifications Check the unit for shipping damage and material shortage file a freight claim and notify Trane office Ver...

Страница 24: ...tion pump when choosing not to use pump supplied with chiller Install proper grounding wires to an earth ground Chilled Water Piping Evaporator water inlet and outlet types sizes and locations are sho...

Страница 25: ...ed to establish a balanced flow Note Both the entering and leaving water lines have shutoff valves installed to isolate the evaporator for service Strainer A pipe strainer is installed in the water re...

Страница 26: ...treatment specialist be engaged to determine what water treatment if any is required Trane assumes no responsibility for equipment failures which result from untreated or improperly treated water or s...

Страница 27: ...be utilized Failure to do so may lead to hose collapse and total system failure Flexible Hose Guidelines WARNING Hose Failure Failure to comply with installation instructions that follow may result in...

Страница 28: ...r and retighten if necessary on monthly inspec tion intervals Figure 7 Dixon Coupling The following figures illustrate the correct and incorrect methods for installing hose in a horizontal hookup appl...

Страница 29: ...imp at the ground The following figures illustrate the correct and incorrect methods for installing hose in a vertical hookup application Figure 10 Correct Vertical Hose Installation Correct vertical...

Страница 30: ...igures illustrate the correct and incorrect methods for installing hose in a horizontal and vertical combination application Figure 12 Correct Horizontal Vertical Installation Correct horizontal verti...

Страница 31: ...ose is completely supported by the couplings the vertical run of hose is greater than 7 feet the hose is not adequately supported by the ground Figure 14 Correct Unsupported Horizontal Installation Co...

Страница 32: ...tin in writing Freeze Protection from Ambient Conditions Use the procedure described below to ensure that the chilled water system is adequately protected from freeze up in applications where the unit...

Страница 33: ...Wrap the heat tape around the pipe or apply it straight along the pipe as necessary to provide the required protection Refer to Figure 15 and Tables 2A and 2B 2 Use friction tape to secure the heat t...

Страница 34: ...Heat Tape with Outer Wrap Note Spiralled applications are twisted around pipe 3 turns per linear foot of pipe Application Technique Straight Pipe Size 2 2 1 2 3 4 5 Heat Tape Req per Linear Ft of Pipe...

Страница 35: ...one and chemical resistant thermoplastic rubber compound Temperature Rating F 49 to 194 Weight Lbs 100 Ft 64 Conductor Nominal OD in 0 8200 Cable Rating UL Rated at 2000 Volts C UL 600 volts for conti...

Страница 36: ...e contents are as follows Four 4 100 sections of 2 0 awg cable and eight 8 15 pig tails Figure 16 Electrical Cable Box Cam lok Connectors Each cable is supplied with a male cam lok on one end and a fe...

Страница 37: ...male pig tail has a male cam lok on one end and a barrel lug on the other Each female pig tail has a female cam lok on one and a barrel lug The barrel lug end allows for connection into a power distr...

Страница 38: ...ase power supply to the unit CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment damage Circ...

Страница 39: ...listed in Table 4 The electrical service must be protected from over current and short circuit conditions in accordance with NEC requirements Protection devices must be sized according to the electric...

Страница 40: ...40 CSRA SVX02A EN Installation Figure 19 Typical Field Installed Power Wiring for Field Installed Pump Refer to the Wiring Diagram Notes at the end of this Section...

Страница 41: ...itch Size for each unit Load Definitions LOAD 1 CURRENT OF THE LARGEST MOTOR COMPRESSOR OR FAN MOTOR LOAD 2 SUM OF THE CURRENTS OF ALL REMAINING MOTORS LOAD 4 CONTROL POWER TRANSFORMER AND ANY OTHER L...

Страница 42: ...ance with UL Standard 465 Local codes may take precedence 5 All units are across the line starting Compressors will never start simultaneously 6 60 Hz units One field provided 115 60 1 15 amp power su...

Страница 43: ...igure 4 for the electrical access locations provided on the unit and Table 5 for AC conductor sizing guidelines and A Use copper conductors unless otherwise specified B Ensure that the AC control wiri...

Страница 44: ...lock circuit if a chilled water flow interlock diagnostic is desired for the system Before installing the control wiring refer to Figure 4 for the electrical access into the control panel Refer to the...

Страница 45: ...tor sizing guidelines that must be followed when in terconnecting a communication link to the unit C Communication link must not exceed 5 000 feet maximum for each link D Communication link must not p...

Страница 46: ...d Ice Building Control Option The CGM provides auxiliary control for a customer specified installed contact closure for ice making When this field installed normally open contact 5K86 is provided the...

Страница 47: ...CSRA SVX02A EN 47 Installation Figure 20A Typical Field Control Connections Diagram...

Страница 48: ...48 CSRA SVX02A EN Installation Figure 20B Typical GBAS 0 5 Volt Connections Diagram...

Страница 49: ...CSRA SVX02A EN 49 Installation Field Connection Diagram Notes for all System Control Options...

Страница 50: ...for tightness and point of termination accuracy Verify that the condenser airflow will be unobstructed Check the condenser fan blades Ensure they rotate freely within the fan orifices and are securel...

Страница 51: ...n phases can equal as much as a 20 current imbalance with a resulting increase in motor winding temperatures that will decrease motor life If the voltage imbalance is over 2 notify the proper agencies...

Страница 52: ...ss each winding is not as important as the amount of variation between the windings The actual resistance measured may vary due to the accuracy of the meter rounding off of the resistance readings and...

Страница 53: ...ccurs If illumination occurs only when pushed then phases are correct If red light is illuminated open the field disconnect switch or circuit breaker protection switch and reverse any two power wires...

Страница 54: ...btract command is given and a change in the compressor staging has been detected the value of the control algorithm is reset to 0 Chiller Freeze Protection The CGM prevents evaporator fluid from freez...

Страница 55: ...loads a Proportional Integral control to setpoint as opposed to control to deadband control strategy is used System reliability is inversely proportional to compressor cycle rates so reliability is th...

Страница 56: ...ent temperature sensor 1 Zone Temperature sensor 2 Outside Air Temperature sensor 3 Entering Solution Temperature sensor The reset temperature value Start Temperature to start resetting the Leaving So...

Страница 57: ...o 0 LSS ALSS Adjustable Reset 3 16 F End Temperature Range 66 81 Factory Preset 75 Start Temperature Range 66 81 Factory Preset 78 Zone Temperature Zone Reset Cooling Factory Preset 5 Active Leaving S...

Страница 58: ...next available compressor which meets the specified criteria will be started If a compressor can not be turned Off due to the minimum On Time the next compressor which meets the specified criteria wil...

Страница 59: ...hed lines connecting pairs of fans indicate instances where one contactor controls both fans Sequence of Operation Low Ambient Dampers Low Ambient Dampers are used to extend the operation of these uni...

Страница 60: ...ified or licensed service individual who has been properly trained in handling exposed rotating components perform these tasks Failure to follow all safety precautions when exposed to rotating compone...

Страница 61: ...glish Note 1 Factor to convert Feet of Water to Lbs per Sq Inch PSI 2 3 Feet of Water 1 PSI Unit Size Water Volume Minimum Flow Rate Maximum Flow Rate gal liter gpm liter s gpm liter s C60 37 8 143 72...

Страница 62: ...1A On 1B Off Off Off Off Off 100 Ckt 1 2 Off Off 2A Off 2B Off 1B 2B2 1A Off 1B On Off Off Off Off 100 Ckt 1 2 Off Off 2A Off 2B Off 2A 2B4 1A Off 1B Off Off Off Off Off 100 Ckt 1 2 Off Off 2A On 2B O...

Страница 63: ...ed Press the ENTER key to confirm this choice WARNING Rotating Components During installation testing servicing and troubleshooting of this product it may be necessary to check rotating components Hav...

Страница 64: ...e power wires at the fan contactors will only affect the individual fan rotation Ensure that the voltage phase sequence at the main terminal block 1TB1 or the factory mounted disconnect switch 1S14 is...

Страница 65: ...CSRA SVX02A EN 65 System Start Up Figure 22 Condenser Fan Locations...

Страница 66: ...1 2 to 3 4 full when they are Off 5 Check the condenser coils They should be clean and the fins should be straight Straighten any bent coil fins with an appropriate sized fin comb 6 Turn the main powe...

Страница 67: ...ed in the previous step has elapsed 12 Turn the 115 volt control circuit switch 1S1 On 13 Press the TEST START key to start the test Remember that the delay designated in step 11 must elapse before th...

Страница 68: ...s pressed and the delay designated in this step has elapsed Press the ENTER key to confirm this choice WARNING Rotating Components During installation testing servicing and troubleshooting of this pro...

Страница 69: ...he actual liquid line temperature as close to the liquid line service valve as possible To ensure an accurate reading clean the line thoroughly where the temperature sensor will be attached After secu...

Страница 70: ...e operating circuit has been com pleted check and record the ambient temperature compressor oil level each circuit compressor suction and discharge pressures each circuit superheat and subcooling each...

Страница 71: ...ropriate oil charge for a 9 and 10 Ton scroll compressor is 8 5 pints For a 14 and 15 Ton scroll compressor use 13 8 pints Table 11 Recommended Refrigerant Capacities The listed refrigerant charge is...

Страница 72: ...wer has been Off for an extended period allow the crankcase heater to operate a minimum of 8 hours before starting the unit Compressor crankcase heaters can be energized by supplying 115V power to the...

Страница 73: ...ing could result in death or serious injury Turn the solution pump control circuit breaker handle to the Off position At the Human Interface Module press the SETUP key The LCD screen will display vari...

Страница 74: ...Liquid Super Sub Temp Oil Press Press Press heat cool Oil Press Press Press heat cool Date F Level Psig Psig Psig F F Level Psig Psig Psig F F ok ok low low ok ok low low ok ok low low ok ok low low o...

Страница 75: ...erential across the thermal expansion valve that limits its capacity Under these conditions it is not unusual to hear the compressor rattle until the suction pressure climbs and the flow rate increase...

Страница 76: ...and HFC refrigerant to the atmosphere that can result from installation operation routine maintenance or major service on this equipment Only technicians with EPA certification should be allowed to h...

Страница 77: ...8 29 5 23 9 33 9 C40 4 9 460 17 2 117 18 9 21 7 C60 4 15 460 25 4 178 30 7 35 3 Fuse Replacement Table Condenser Fan Fuse Time Delay 1F1 Thru 1F6 Class RK5 15A Control Power Fuse 1F7 Class K5 6 25 Am...

Страница 78: ...orator water carryover fan brake horsepower due to increase static pressure losses airflow reduction At least once each year or more often if the unit is located in a dirty environment clean the evapo...

Страница 79: ...of 6 between the sprayer nozzle and the coil spray the solution perpendicular at 90 degrees to the coil face 6 Spray the leaving airflow side of the coil first then spray the opposite side of the coil...

Страница 80: ...ion of CFC HCFC and HFC refrigerant to the atmosphere that can result from installation operation routine maintenance or major service on this equipment Only technicians with EPA certification should...

Страница 81: ...g bulbs for cleanliness Clean if required Sensing bulbs must make good contact with suction lines and be properly insulated Clean condenser fans Check fan assemblies for proper orifice clearance and f...

Страница 82: ...reference you may find it helpful to record the unit data requested below in the blanks provided 1 Complete Unit Model Number 2 Unit Serial Number 3 Unit DL Number design special units only 4 Wiring D...

Страница 83: ...ied technicians should perform the installation and servicing of equipment referred to in this bulletin Literature Order Number CSRA SVX02A EN File Number SV CAP Chillersource CSRA SVX02A EN 0502 Supe...

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