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 ÷ 520chilled-water or cooled-water near the module.• The water pipeline should be cleaned before connecting to the unit, then dismantle the filter andinstall again. After confirming the water pipeline is clean, the connection can be done.• The soft connector should be used at the inlet (outlet) water pipe to avoid vibration.• To ensure turn on the water pump first and then the unit, the water switch should be installed onthe inlet pipeline and connect its wire to terminal W1 and W2 of main unit.• Water discharge switch should be installed at the outlet pipe, and gas discharge valve shouldbe installed at the inlet water pipe. When the unit works normally, the handler of valve must betaken away to ensure the valve can’t be opened. If the water discharge valve is opened whenthe unit is running, water breaking-off will occur.• The freeze-water pipeline should be covered with adequate heat-insulating material to keep thechilled-water temp. and prevent dewing.• In the cold winter, if the unit stops at night, the water in plate heat exchanger and pipeline mayfreeze, which will damage the device and pipeline. To prevent freezing, it is absolutelyforbidden to switch off the power of the unit (the unit has auto anti-freeze function). If it is stilllikely to freeze, it must drain away all water in the water pipe. If it is difficult to drain water, someanti-freeze mixture such as glycol or propylene glycol can be adopted. Notice: it is absolutelyforbidden to use salt mixture, which would corrode the system and cause damage.• When using industrial water as chilled-water, it seldom scales. However if adopting the waterfrom well or river, it will produce much deposit such as scale and sand. So the water shouldbe filtered and intenerated through some equipment before flowing into the freeze-watersystem. If there is sand or mud deposited in the evaporator, it will jam the flow of chilled-water,which will cause freezing. So it is important to test the water’s PH value, conductivity,concentration of chlorine hydronium, concentration of sulfur hydronium, etc.The following is the standard of water quality:PH value: 6.5~8.0 Total rigidity:
CD 30 ÷ 52011. WiringAll wiring installation must be done by qualified person.Precautions:• The power supply must be stable when the unit is running. Considering all voltage-drop factors,the running voltage needed by the system should be kept within ±10% range of the rating.Too high or too low voltage will have bad effect on the unit.• The difference of voltage among phases should be not more than 2% of the rating, and themax current difference among phases should be less than 3% the rating to prevent compressorfrom overheating.• The frequency of the power should be kept within ±2%of the rating.• The lowest starting voltage should be more than 90% of the rating.• The compressor may be unable to start if the wire is too longer, so the length of the wire shouldbe limited to ensure the voltage-drop between the two ends of the wire is less than 2% of therating. If it is unavailable to shorten the wire, thicker wire is available.• All wire must conform to concerning national standards and well insulated. The insulationbetween terminals and modules should be checked by 500v high resistance meter and itsinsulation resistance should be not less than 10 MΩ.• For safety, according to the concerning standards, unit should be grounded well to preventelectric shock.• The running current, input power and other parameters on the nameplate might be differentfrom the actual situation, which is decided by the actual load and cooling water temp., so it isrecommended to select power source, transformer, fuse switch and the size of the wire in theconsideration of the worst condition.• In order to control the compressors conveniently as well as independently and avoid thedamage caused by the short circuit, it is necessary to equip the suitable no-fuse air switch foreach inlet wire.27
- 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: CD 30 ÷ 520• Installation founda
- 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 and 36: CD 30 ÷ 5202) Vacuum refrigerant p
- Page 37 and 38: CD 30 ÷ 52014. Troubles and soluti
- 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<strong>11</strong>. WiringAll wiring installation must be done by qualified person.Precautions:• The power supply must be stable when the unit is running. Considering all voltage-drop factors,the running voltage needed by the system should be kept within ±10% range of the rating.Too high or too low voltage will have bad effect on the unit.• The difference of voltage among phases should be not more than 2% of the rating, and themax current difference among phases should be less than 3% the rating to prevent compressorfrom overheating.• The frequency of the power should be kept within ±2%of the rating.• The lowest starting voltage should be more than 90% of the rating.• The compressor may be unable to start if the wire is too longer, so the length of the wire shouldbe limited to ensure the voltage-drop between the two ends of the wire is less than 2% of therating. If it is unavailable to shorten the wire, thicker wire is available.• All wire must conform to concerning national standards and well insulated. The insulationbetween terminals and modules should be checked by 500v high resistance meter and itsinsulation resistance should be not less than 10 MΩ.• For safety, according to the concerning standards, unit should be grounded well to preventelectric shock.• The running current, input power and other parameters on the nameplate might be differentfrom the actual situation, which is decided by the actual load and cooling water temp., so it isrecommended to select power source, transformer, fuse switch and the size of the wire in theconsideration of the worst condition.• In order to control the compressors conveniently as well as independently and avoid thedamage caused by the short circuit, it is necessary to equip the suitable no-fuse air switch foreach inlet wire.27
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