What are the jobs of the maintenance personnel of the air conditioning system

In addition to the compressor, condenser, expansion valve and evaporator that are familiar with the air conditioning system, the air conditioning system components also include: fans, air filters, filter dryers, humidifiers, heaters, sight glasses, oil storage tanks, solenoid valves, wind pressure sensors, etc.

The daily work of the maintenance personnel of the air conditioning system is as follows:

1. Maintenance of control system.

For the maintenance personnel of the air-conditioning system, the first step in the inspection is to see whether the air-conditioning system is operating normally, and first check whether the functions and parameters of the air-conditioning system are normal from the display screen of the air-conditioning system; Then check the alarm record to see whether the alarm is alarmed, analyze the cause of the alarm, and finally check whether the working status of the temperature and humidity sensor is normal.

2. Patrol inspection and maintenance of condenser.

Check the fixing condition of the condenser to see if there are signs of loosening of the fixing parts of the condenser, so as not to cause damage to the refrigerant pipeline and outdoor unit. Check whether the refrigerant pipeline is damaged and check the operation status of the fan: mainly check the working condition of the bearing, base, motor, etc. of the fan, check whether the fins of the air conditioner condenser are damaged, and check the current during operation.

3. Patrol inspection and maintenance of evaporator and expansion valve.

The maintenance of evaporator and expansion valve is mainly to check whether the evaporator coil is clean, whether there is frosting, and whether the evaporator drain tray drain is smooth, if there is serious frosting on the evaporator coil or the temperature on the coil is high when the air conditioning compressor is running (under normal circumstances, the temperature of the evaporator coil should be about 10 lower than the ambient temperature), the high and low pressure of the compressor should be checked, and if the pressure is normal, it should be considered whether the opening amount of the expansion valve is appropriate. Of course, this phenomenon may also be caused by other environmental reasons, such as insufficient cooling capacity of the air conditioner, slow wind speed caused by fan failure, etc.

4. Inspection and maintenance of humidification system.

The air environment in each place is different, and the use and impact on the humidifier are also different, but the same thing to do in the daily maintenance work is to observe whether there is sediment in the tank, and if so, rinse it in time. Then check the working condition of the water supply and drain solenoid valves; Check whether the drainage pipes of the humidification tank are unblocked; Check whether the water leakage detector is normal, which is an important part of the humidification system, because if the drainage pipe is not smooth, it is easy to form a water leakage, if the water leakage detector is not normal, the air conditioner is prone to accidents.

5. Inspection and maintenance of air circulation system.

For the air conditioning air circulation system, it is mainly considered that the air filter, fan and air duct to the computer equipment of the air conditioning system are considered. Check that the aircon filter is clean; Check the operation status of the fan: mainly check the fastening and balance of each part of the fan, check the bearing, resonance, etc.

Measure the running current of the motor, measure the temperature and humidity values, etc.

Wind system, water system cleaning and sewage, water system descaling, softening pipe, wiring, insulation, casing detection and maintenance, equipment installation, support and hanger detection, rust and paint instrument correction, fluorine system pressure detection, electrical, motor insulation detection, pump mechanical seal replacement, refrigeration refrigeration oil replacement, boiler combustion chamber, flue carbon deposition cleaning, cooling tower water dispenser correction operating pressure, voltage, current, temperature, air volume detection records.

1. Check whether the heat dissipation network of the external unit is clean, and clean the heat dissipation network in a timely manner, if the heat dissipation network is dirty, it will affect the normal use of the air conditioner.

2. To see if the remote control of Haier air conditioner is out of order, you can choose to replace the remote control battery or replace the new remote control to see if the bad phenomenon can be improved.

3. Check whether the various components of the air conditioner are worn out, and ensure that the air conditioner is in good condition.

4. To prevent and control the dampness of the remote control receiving window, it is necessary to drive the damp in time.

5. When the motherboard is damp and eroded, wipe the motherboard clean with alcohol, carefully wipe the motherboard is very fragile, and then dry it with a hair dryer.

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Proper maintenance is conducive to prolonging the service life of the air conditioner and reducing maintenance costs, so the following routine maintenance work must be carried out frequently.

Air filter.

Remove dust from the surface of the filter.

Check if the filter air treatment section needs to be replaced.

Check for belt wear.

Check the fan for abnormal noise.

Check whether the air volume loss alarm is normal· Check whether the motor current is normal.

Compressor · Whether the suction pressure and discharge pressure are normal· Check whether the high and low pressure protection is working normally· Confirm that the suction pressure is stable.

Whether there is an oil leak.

Confirm whether the refrigerant charge is appropriate· Whether there is a refrigerant leakage.

Observe the refrigerant with or without water vapor from the sight glass, and the air-cooled condenser.

Check the fan for abnormal sounds.

Power outages remove foreign objects.

Check that the wire splices are secure.

Miscellaneous. Check whether there is any loosening phenomenon up and down the terminal of the switch· Check whether the screws are degummed.

Cleaning the unit. Check if the condition under the floor is normal· Check whether the power supply voltage is within the normal range (380 10%)·When switching power supplies, pay attention to the phase sequence· The water supply of the humidifier should be kept clean, and the outlet pipe should be unblocked. The humidifier should pay attention to descaling.

Keep the room airflowed.