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 Cleaning work of waterside heat exchanger should be operated by the professional,please contact with our local MAXA service center. After cleaning by chemical liquid detergent, scour the pipeline with clean water and heatthe exchanger again. Pre-dispose the water to avoid rotting and forming of the scaleagain. On the condition of using chemical liquid detergent, please select the intensity, cleaningtime and Temperature of the liquid according to the actual situation. After cleaning, the waste liquid should be neutralized, so please contact the professionalcompany to get the further disposal for the waste. Detergent and neutralization liquid are harmful to human beings, so it is necessary to usesome protective device, such as special glasses, gloves, shoes, mask, etc.• Turn off the unit in winterWhen turning off the unit in winter, clean and dried the inner and outer surface of the unit, thencover them to prevent dust. Open the water discharge valve, drain away the water in heatexchanger of water side and water pipe to prevent freeze. It is recommended to inject someanti-freeze material into the water pipe.• First start after the unit stopsThe following must be done when restarting the unit after a long-term vacancy: Check and clean unit thoroughly. Clean the water system pipeline. Check water pump, adjust switch and other devices of the water system. Tighten all the wire connections.• Accessory replacementOnly MAXA accessory can be used and please don’t use any different one.• Refrigeration systemCheck the discharge and suction pressure to determine whether the unit needs to recharge or not.Take leakage test for the system; if there is leakage or some components needs to be replaced,leakage test is necessary. When recharging refrigerant, two cases must be separated: The refrigerant has leaked out totallyIn this case, leakage test must be done by using nitrogen (15~20 kgf/cm 2 ) or refrigerant. Ifnecessary, welding should be done after all gas of the system is discharged out.1) Connect the vacuum pump pipeline to the refrigerant charging hole.34
CD 30 ÷ 5202) Vacuum refrigerant pipeline more than 15 minutes and confirm it achieve -1.0×10 5 Pa(-76cmHg).3) After having achieved the designated vacuity, add refrigerant to the system from thecylinder, corresponding volume of the refrigerant can be got from the nameplate andparameters table. It should be noticed that charging just be allowed from the liquidpipeline side.4) The volume charged into the system will vary from different surrounding Temperature,if the designated volume can’t be achieved, unit can be started for recharging whilethe water system is running. Wire the low-pressure switch to short circuit if necessary.Notice: rewiring the connection after charging. Additional refrigerant chargeConnect refrigerant cylinder to the refrigerant charging hole and mount a pressuredetector on the gas side pipeline.1) Recycle the chilled-water, then start unit, take low-pressure control switch to shortcircuit if necessary.2) Charge the refrigerant into the system slowly, and check the discharge and suctionpressure.Warning: it is absolutely forbidden to charge the oxygen, acetylene or other gaswhich is poisonous or flammable into the system for leak hunting or leakage test,just nitrogen or refrigerant is allowed.35
- 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: CD 30 ÷ 52013. MaintenanceTo ensur
- 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 Cleaning work of waterside heat exchanger should be operated by the professional,please contact with our local MAXA service center. After cleaning by chemical liquid detergent, scour the pipeline with clean water and heatthe exchanger again. Pre-dispose the water to avoid rotting and forming of the scaleagain. On the condition of using chemical liquid detergent, please select the intensity, cleaningtime and Temperature of the liquid according to the actual situation. After cleaning, the waste liquid should be neutralized, so please contact the professionalcompany to get the further disposal for the waste. Detergent and neutralization liquid are harmful to human beings, so it is necessary to usesome protective device, such as special glasses, gloves, shoes, mask, etc.• Turn off the unit in winterWhen turning off the unit in winter, clean and dried the inner and outer surface of the unit, thencover them to prevent dust. Open the water discharge valve, drain away the water in heatexchanger of water side and water pipe to prevent freeze. It is recommended to inject someanti-freeze material into the water pipe.• First start after the unit stopsThe following must be done when restarting the unit after a long-term vacancy: Check and clean unit thoroughly. Clean the water system pipeline. Check water pump, adjust switch and other devices of the water system. Tighten all the wire connections.• Accessory replacementOnly MAXA accessory can be used and please don’t use any different one.• Refrigeration systemCheck the discharge and suction pressure to determine whether the unit needs to recharge or not.Take leakage test for the system; if there is leakage or some components needs to be replaced,leakage test is necessary. When recharging refrigerant, two cases must be separated: The refrigerant has leaked out totallyIn this case, leakage test must be done by using nitrogen (15~20 kgf/cm 2 ) or refrigerant. Ifnecessary, welding should be done after all gas of the system is discharged out.1) Connect the vacuum pump pipeline to the refrigerant charging hole.34
Change language