Spring is a key period for the maintenance of refrigeration equipment, and the change of climate temperature and humidity is easy to cause condensation water accumulation, equipment aging and other problems. Combined with industry norms and maintenance experience, the following are the core measures for spring dust-free workshop cooling equipment maintenance:

1. Deep cleaning and component maintenance

Clean the filter and cooling system

Filter: Pollen and dust increase in spring, it is necessary to clean the primary and medium effect filters every month (it is recommended to replace the high efficiency filter once every 3 months). Use a soft brush or compressed air to remove surface dust to avoid clogging and affecting air cleanliness.

Condenser/evaporator: Clean the dust and microbial residue on the fin, wipe with neutral detergent to prevent the decrease of heat dissipation efficiency resulting in increased energy consumption.

Check refrigerant and pressure system

Refrigerant pressure: Use a pressure gauge to check whether the refrigerant is within the normal range (for example, 8-10bar at the low pressure side and 25-30bar at the high pressure side of the R410A system). If the pressure is abnormal, supplement or repair the leakage point in time.

Refrigerant pipe: Check the sealing of the pipe interface to avoid leakage due to thermal expansion and cold contraction, and remove impurities in the condensate drainage pipe to prevent blockage.

Second, key equipment operation status monitoring

Fan and motor maintenance

Fan bearing: check the lubrication, add high temperature grease, reduce the noise and vibration caused by friction.

Motor current: Monitor the motor load through the ammeter. If the current increases abnormally (such as exceeding 10% of the rated value), check the tightness of the belt or bearing wear.

Air conditioning system coordination inspection

Temperature and humidity sensor: Calibrate the sensor accuracy (error ≤±0.5 ° C) to prevent dew or static electricity caused by humidity fluctuations in spring.

Air valve and air duct: Check the flexibility of opening and closing of the air valve, clean the dust in the air duct, and ensure the uniform distribution of air flow (recommended smoke test verification).

Third, electrical safety and moisture and dew prevention measures

Electrical system check

Wiring terminals: Tighten loose terminals and check whether the cable insulation layer is aging (if it is cracked, replace it immediately) to avoid short-circuit risks.

Control panel: Clean the internal dust, check the operating status of the PLC module, and update the control program to meet the seasonal temperature control requirements.

Moisture-proof and anti-condensation treatment

Equipment shell: spray anti-rust coating, focus on checking whether the compressor, evaporator and other metal parts rust.

Humidity control: Through the dehumidifier or air conditioning linkage system, the workshop humidity is maintained at 45%-60% to avoid high humidity resulting in moisture on the circuit board.

Iv. Preventive maintenance and record management

Develop a maintenance plan

It is recommended to carry out special maintenance in spring, including filter replacement, refrigerant pressure test, electrical safety inspection, etc., and record each maintenance data (such as cooling efficiency and energy consumption changes).

Fault warning system

Enable the remote monitoring platform to track equipment operating parameters in real time (such as compressor start-stop frequency, condensation temperature), and automatically push alarm information when abnormal.

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