What are the maintenance contents of central air conditioning? How to clean the air conditioner?

Nowadays, central air conditioning is more and more favored by us, mainly because of its good cooling effect and high comfort. However, we should pay attention to maintenance during use

So what are the maintenance contents of central air conditioning? How to clean the air conditioner? Below let Xiaobian to tell us - next!

First, central air conditioning maintenance content

(1) Check the engine disk. It includes whether the contactor is outstanding, whether the wire connection is loose, and cleaning the interior of the engine cabinet.

(2) Start the freezing and cooling pump, and adjust the water flow according to the design requirements of the unit.

(3) Check the working conditions of the oil pump and the oil pressure difference switch, record the oil pressure difference and the oil pump flow, and replace the oil filter.

(4) Replace the refrigerant filter, evaporator oil return filter and suction port oil return filter.

(5) Check whether the parameters of each temperature sensor are within the normal range.

(6) Check each pressure transmitter and adjust it back to zero position.

(7) Check whether the line of the unit is loose and tighten it.

(8) Test the insulation of the compressor motor and the electric pump motor, if there is an anomaly, the cause should be found and excluded.

(⑨) Check the mechanical control equipment, and clean it to make it sensitive and reliable.

(10) Check the throttle drive, tighten the chain disk, adjust the throttle acceleration and time error. Make it fit the needs of driving fe information.

(11) Check whether the oil temperature is normal. The oil cooling system, cooling thermal expansion valve, evaporator high oil return solenoid valve, evaporator low oil return solenoid valve are normal.

(12) Disassemble the condenser and evaporator water cover plate and remove the scale on the surface of the control exchanger.

(13) Vacuum dehumidification, test evaporator pressure, test leak point, and fill frozen oil. Balance the refrigerant pressure of the system, open the barrier valve and repair valve.

(14) Unit operation and debugging. The engine unit adjusts the temperature difference between the inlet and outlet of chilled water, the temperature difference between the inlet and outlet of chilled water, the temperature difference between the evaporator and the inlet and outlet of chilled water, the temperature difference between the condensing temperature and the cooling water, the exhaust temperature, the oil pressure, the oil temperature current and other parameters to ensure that the working efficiency and power consumption of the machine have reached an outstanding state.

(15) Correct the maintenance value of each safety equipment (including high pressure maintenance, low pressure maintenance, exhaust temperature maintenance, bearing temperature maintenance, motor temperature maintenance).

(16) Check the corrosion of the coil, make a record, and submit a recommended report.

Second, how to clean the air conditioner

Take out the air conditioner filter: before cleaning, disconnect the air conditioner power supply, turn on the front panel to buckle the outstanding part of the panel (left and right), turn the panel to the position where the panel is stopped, about 60 degrees, and then pull out the air filter slightly upward to lift the central handle of the air filter, and pull out to the bottom.

Cleaning filter: when the ash accumulation is relatively small, wash with water or vacuum cleaner; When the ash accumulation is severe, please soak in water containing neutral detergent for 10 -- 15 minutes. After washing, shake off the water and dry it in a cool place. Do not heat or dry it at high temperature.

Install the filter: Insert the Java of the filter into the front grille. The locking device is stuck with a claw principle, so please press the two ends of the front panel and the three parts in the center. After installing the filter, close the panel and stand for 10 minutes, open the air conditioner and increase the air volume and cooling capacity, and insist on opening the air conditioner for 30 minutes.

As above, first remove the panel of the cabinet, find the evaporator of the air conditioner, shake the special foam cleaning agent and spray evenly on the evaporator of the air conditioner, then cover the panel, leave it for about 10 minutes, open the air conditioner and increase the air volume and cooling capacity, and insist on opening the air conditioner for 30 minutes. To prevent some foam and dirt from blowing out of the air outlet, cover the air outlet with a damp cloth.