TECHNICAL MANU AL CD 30÷520 06.06 M T E 0 11 2 5 6 ... - Chiller
TECHNICAL MANU AL CD 30÷520 06.06 M T E 0 11 2 5 6 ... - Chiller TECHNICAL MANU AL CD 30÷520 06.06 M T E 0 11 2 5 6 ... - Chiller
CD 30 ÷ 520• Remove compressorIf it is necessary to remove the compressor, please operate with the sequence below:1) Switch off the power2) Remove the electric wire3) Remove the suction and discharge pipeline4) Loosen the fixing bolts.5) Remove the compressor.• Auxiliary electric heaterWhen the outdoor Temperature (is)below 0℃, the condenser outside will frost, which will causethe heat transfer efficiency come down, for the reason above, when using unit in the areas wherethe lowest Temp is between -10℃~0℃ in the winter, it is recommended to select the auxiliaryelectric heater to supply the additional heat. Select the heater with the reference of “SpecificationTable”, if the Temp below -10℃, the higher power-input can be selected.• System anti-freezeIf plate heat exchanger is frozen, the exchanger will be damaged; in addition, this kind ofdamage is out of guarantee, so it should be specially noticed. Users should pay special attention tothe three points below: When there is a long-term vacancy with low outdoor TempWater in waterside heat exchanger should be drained out if the Temp below 0℃. When runningIf the chilled-water flow switch and anti-freeze Temp Sensor are invalid, water pipeline willbe frozen, so the wire of water flow switch must apply to the “wiring principle figure” When maintainingIt is possible to freeze waterside heat exchanger when recharging and dischargingrefrigerant. Whenever the pressure of the refrigerant is below 0.4Mpa, freezing wouldhappen. So it is necessary to drained out all of the water or keeps the water flowing.36
CD 30 ÷ 52014. Troubles and solutionsTroubles Possible reasons SolutionsAir or other gas enter the system Discharge the gas from refrigerantcharging hole, re-vacuuming ifFins are dirty or jammed by someobstaclesnecessaryClean the fins of condenserHigh discharge The condenser wind flow ispressure(Cooling)insufficient or motor failHigh suction pressureRefrigerant over-chargedHigh surrounding TempCheck the condenser motor, repair itif necessaryRefer to the “high suction pressure”part.Discharge the additional refrigerantMeasure the surrounding TempLow dischargepressure(Cooling)Surrounding Temp is lowerRefrigerant leak or insufficientLow suction pressureMeasure the surrounding TempLeak hunting or rechargingRefer to the “low suction pressure”High suctionpressure(Cooling)Refrigerant over-chargedHigh Temp of the inlet chilled-waterDischarge the additionalCheck the heat insulation of waterpipelineInsufficient of water flowMeasure the Temp differencebetween inlet and outlet water, adjustLow suctionLow Temp of inlet chilled-water the water flowpressureRefrigerant leak or insufficient Check installation(Cooling)Scaling in the evaporatorLeak hunting or rechargingDescalingWater flow InsufficientMeasure the Temp differencebetween inlet and outlet water, adjustAir or other gas enter the system the water flowDischarge the gas from refrigerantHigh dischargeScaling in the heat exchanger of charging hole, re-vacuuming ifpressurewatersidenecessary.(Heating)High Temp of outlet cooling water DescalingHigh suction pressureCheck the water TempRefer to “high suction pressure” part37
- Page 1 and 2: R22A I R C O N D I T I O N I N GR40
- Page 3 and 4: CD 30 ÷ 520CONTENTSModular Air-coo
- Page 5 and 6: CD 30 ÷ 520Air-cooled heat-pump mo
- Page 7 and 8: CD 30 ÷ 5203. View (one module 65k
- Page 9 and 10: CD 30 ÷ 5205. SpecificationCooling
- Page 11 and 12: CD 30 ÷ 520CoolingModelCD65 130 19
- Page 13 and 14: CD 30 ÷ 5206.3 Pulse width modulat
- Page 15 and 16: CD 30 ÷ 5207. The capacity control
- Page 17 and 18: CD 30 ÷ 5207.1. Heating and coolin
- Page 19 and 20: CD 30 ÷ 5207.2. Cooling and heatin
- Page 21 and 22: CD 30 ÷ 5207.3 Principle of Digita
- Page 23 and 24: CD 30 ÷ 520 Matched RS485 communic
- Page 25 and 26: CD 30 ÷ 520• Installation founda
- Page 27 and 28: CD 30 ÷ 52011. WiringAll wiring in
- Page 29 and 30: CD 30 ÷ 52012. Debugging• Prepar
- Page 31 and 32: CD 30 ÷ 520 Please turn on the mai
- Page 33 and 34: CD 30 ÷ 52013. MaintenanceTo ensur
- Page 35: CD 30 ÷ 5202) Vacuum refrigerant p
- Page 39 and 40: CD 30 ÷ 520Compressor stopby thelo
- Page 41 and 42: CD 30 ÷ 52016. Electric control fi
- Page 43 and 44: 18. Unit electric control & communi
- Page 45 and 46: CD 30 ÷ 520Unit electric controlle
- Page 47 and 48: CD 30 ÷ 520systems. The correspond
- Page 49 and 50: CD 30 ÷ 52016——System A electr
- Page 51 and 52: CD 30 ÷ 5203. Failure & protection
- Page 53 and 54: CD 30 ÷ 5202. Pattern& buttons des
- Page 55 and 56: CD 30 ÷ 520number, etc. will be se
- Page 57 and 58: CD 30 ÷ 520H) The current setting
- Page 59 and 60: CD 30 ÷ 5207) Online units & runni
- Page 61 and 62: CD 30 ÷ 5207——Communication wi
- Page 63 and 64: CD 30 ÷ 52063
<strong>CD</strong> 30 ÷ 520• Remove compressorIf it is necessary to remove the compressor, please operate with the sequence below:1) Switch off the power2) Remove the electric wire3) Remove the suction and discharge pipeline4) Loosen the fixing bolts.5) Remove the compressor.• Auxiliary electric heaterWhen the outdoor Temperature (is)below 0℃, the condenser outside will frost, which will causethe heat transfer efficiency come down, for the reason above, when using unit in the areas wherethe lowest Temp is between -10℃~0℃ in the winter, it is recommended to select the auxiliaryelectric heater to supply the additional heat. Select the heater with the reference of “SpecificationTable”, if the Temp below -10℃, the higher power-input can be selected.• System anti-freezeIf plate heat exchanger is frozen, the exchanger will be damaged; in addition, this kind ofdamage is out of guarantee, so it should be specially noticed. Users should pay special attention tothe three points below: When there is a long-term vacancy with low outdoor TempWater in waterside heat exchanger should be drained out if the Temp below 0℃. When runningIf the chilled-water flow switch and anti-freeze Temp Sensor are invalid, water pipeline willbe frozen, so the wire of water flow switch must apply to the “wiring principle figure” When maintainingIt is possible to freeze waterside heat exchanger when recharging and dischargingrefrigerant. Whenever the pressure of the refrigerant is below 0.4Mpa, freezing wouldhappen. So it is necessary to drained out all of the water or keeps the water flowing.36
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