Emerson Copeland Scroll ZPV066, Bulletin

Page 1: ... Lengths High Refrigerant Charge 7 Discharge Check Valve 8 Suction and Discharge Tube Design 8 Compressor Mounting 8 Discharge Mufflers 8 Airborne Sound Control 8 Expansion Devices 9 Reversing Valves 9 Accumulators 9 Off Cycle Migration Control 9 Manifolded Compressors 10 Manifolded Applications 10 Application Tests 11 General Application Tests 11 Assembly Line Procedures Installing the Compressor...

Page 2: ...ssor You are strongly advised to follow these safety instructions Safety Icon Explanation DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION used with the safety alert symbol indicates a hazardous situation which if not avoided could result in...

Page 3: ...rants and refrigeration oils Personal safety equipment must be used Failure to follow these warnings could result in serious personal injury WARNING BURN HAZARD Do not touch the compressor until it has cooled down Ensure that materials and wiring do not touch high temperature areas of the compressor Use caution when brazing system components Personal safety equipment must be used Failure to follow...

Page 4: ...quirements please see the Emerson EVC Drive user guide Ensure correct wiring at both the compressor and drive connections prior to starting the compressor to avoid a mis wire or powered reverse situation These situations may cause compressor damage The variable speed compressor must be paired with the appropriate variable speed drive Do not connect the power supply directly to the compressor Nomen...

Page 5: ...e includes motor protection features for the compressor The drive sets the maximum current limit low voltage fold back which allows the compressor to ride through low voltage situations which helps keep the compressor running to avoid nuisance trips The drive also includes lost rotor avoidance and locked rotor detection The lost rotor avoidance uses a custom algorithm to evade a speed error by red...

Page 6: ... by the discharge line thermistor If operating the compressor below 1800 RPM an oil boost cycle is required Refer to the note in the operating envelope For applications where the voltage is below the rated minimum voltage the drive speed may be limited The limitation may also be affected by the ambient temperature High Pressure Control A high pressure control must be used in all applications A hig...

Page 7: ...systems to prevent solid particulate contamination oil dielectric strength degradation ice formation oil hydrolysis and metal corrosion It is the system designer s responsibility to make sure the filter drier is adequately sized to accommodate the contaminants from system manufacturing processes that leave solid or liquid contaminants in the evaporator coil condenser coil and interconnecting tubin...

Page 8: ...nt frequency or b evaluate the risk and life of the piping system when the compressor is allowed to run at frequencies that are coincident with natural frequencies of the piping system To do part b strain gauging the system piping is required For assistance in evaluating strain gauging results contact Application Engineering In order to properly determine if a design is appropriate for a given app...

Page 9: ...me outdoor ambient and system charge The reversing valve solenoid should be wired so that the valve does not reverse when the system is shut off by the operating thermostat in the heating or cooling mode If the valve is allowed to reverse at the system shutoff suction and discharge pressures are reversed to the compressor This will result in pressures equalizing through the compressor which can ca...

Page 10: ...lication guidelines as single compressors outlined in this bulletin The refrigerant charge limit for manifolded compressors is shown in Table 4 A manifolded circuit with charge over the limit must have a crankcase heater or stator heating applied to both compressors Oil levels in the individual sight glasses will vary depending on whether one or more compressors in the manifolded set are operating...

Page 11: ...s run test The inside of both fittings should be wiped with a lint free cloth to remove residual oil prior to brazing A compressor containing POE oil should never be left open longer than 20 minutes Assembly Line Brazing Procedure Personal safety equipment must be used during brazing operation Heat shields should be used to prevent overheating or burning nearby temperature sensitive parts Fire ext...

Page 12: ...est times Copeland Scroll compressors are designed for use with refrigerant and testing with nitrogen may result in a situation where the compressor does not develop a pressure differential no pump condition When testing with nitrogen the compressor must be allowed to cool for several minutes between tests Unbrazing System Components Before attempting to braze it is important to recover all refrig...

Page 13: ...d service practice when charging a system with a scroll compressor to charge liquid refrigerant into the high side only It is not good practice to dump liquid refrigerant from a refrigerant cylinder into the crankcase of a stationary compressor If additional charge is required charge liquid into the low side of the system with the compressor operating CAUTION Do not start the compressor while the ...

Page 14: ... 2017 Emerson Climate Technologies Inc 14 AE4 1414 ...

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Page 16: ...round tube as necessary to heat tube evenly Add braze material to the joint while moving torch around joint to flow braze material around circumference After braze material flows around joint move torch to heat Area 3 This will draw the braze material down into the joint The time spent heating Area 3 should be minimal As with any brazed joint overheating may be detrimental to the final result Fiel...

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Page 20: ... 2017 Emerson Climate Technologies Inc 20 AE4 1414 Figure 9 Start Up Procedure Figure 10 Shut Down Procedure ...

Page 21: ... 01 10 32 x 8mm Long Taptite Screw Molded Plug 529 0099 00 8 Gauge Wire 42 Leads Discharge Line Thermistor Molex Connector 085 0211 00 Fits 7 8 Tube Thermistor Clip 032 0688 04 7 8 Clip Suction Discharge Discharge Rotalock O Ring Seal 020 0028 02 Suction Rotalock O Ring Seal 020 0028 03 Discharge Rotalock Service Valve 7 8 998 0510 90 Suction Rotalock Service Valve 1 1 8 998 0510 99 Discharge Rota...

Page 22: ...Recommended Switching Frequency Hertz 6 000 6 000 Table 3 Emerson Compressor Drive Selection Drive Model Compressor Model Rated Voltage Drive Voltage Input Range Drive Nominal Power EVC1150B J1 124 ZPV0662E 5E9 230 200 240 15kW EVC1150B K2 124 ZPV0662E 4E9 380 380 480 EVC1150B K1 124 ZPV0662E 7E9 460 380 480 EVC1150B L1 124 ZPV0662E 7E9 575 500 575 EVC1185B J1 124 ZPV0962E 5E9 230 200 240 18kW EVC...

Page 23: ...active and the speed is above 3600 RPM decelerate 3600 RPM for a default of three minutes After two minutes and the command has not changed shut down the compressor 4 If envelope control is not active and the speed is below 3600 RPM maintain current speed for a default of three minutes After two minutes and the command has not changed shut down the compressor The contents of this publication are p...