First, check the air filter and make the cleaning or replacement depending on the situation.
Second, check whether the evaporator is frost or dirt.
Third, check the conditions between dynamic balance and static operating when sending fan leaves of precision air conditioning.
Fourth, check the belt tension and the badly worn belt should be replaced.
Fifth, condensate drain should be smooth, and clean the dirt in the tank.
The refrigeration system
First, check whether the high and low voltage protection is in the good condition.
Second, detect whether the suction and discharge pressure is normal.
Third, check the filter drier, and it should be promptly replaced when clogging, in addition, it is not allowed to run the refrigeration system for a long period of time before replacement.
Fourth, observe whether there is the lack of fluid from the endoscopic. (Consider the influence of the ambient temperature)
Fifth, check whether the expansion valve or the thermal package is damaged, and whether the connecting pipe is worn or the balance pipe is connected.
The electrical parts of the air conditioning
First, check whether it is normal to display the value of each of the display panel, such as settings and the actual temperature and humidity values.
Second, view alarm records to resolve the existing alarm.
Third, Check whether the temperature and humidity sensor is clean or sensitive (the temperature and humidity can be proofed when necessary).
Fourth, detect compressor and fan motor running current.
Fifth, check whether the connection point of the circuit breakers, contactors, relays and other relevant components of commercial air conditioning are solid.
The detection of condenser section
First, check whether the fan operating conditions are normal.
Second, check whether the fan speed is different.
Third, check whether the condenser coil is fouling, and make prompt clean.
Fourth, Check whether the gas or liquid insulation casing are intact.
Fifth, we should pay attention to the cleanliness of the water filter of the water-cooled units.
The humidifier part
First, check the added water solenoid valve.
Second, check the humidification tank fouling.
Third, check the flushing function.
Fourth, scale removal and replacement of the electrode.
The room environment checks
First, check the condition of the return air back to the wind and the room temperature, humidity compare.
Second, room air leakage hole should be blocked.
Third, observe whether the air supply is blocked.
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