1、 Basic cleaning process
1. Power outage and cooling
Close the heat medium valve and disconnect the power supply, and wait for the tube temperature to drop to room temperature (usually taking ≥ 2 hours) to prevent burns or the evaporation of cleaning agents.
/2. Pre dust removal treatment
Use a soft bristle suction head of a vacuum cleaner to remove floating dust along the gaps of the fins, or use compressed air with a pressure of ≤ 0.4MPa to blow in the direction of the airflow (the pressure of the aluminum fins should be ≤ 0.2MPa).
2、 Taboos and protective measures
Prohibit strong corrosive agents: Strong acids such as hydrochloric acid and nitric acid can cause copper pipes to corrode and puncture; Carbon tetrachloride cleaning may cause refrigerant system failure.
Mechanical operation specifications:
Special fin comb is used for fin correction, and knocking or scratching with hard objects is prohibited
When flushing with water, the angle of the spray gun should be kept at 30 °, and the high-pressure water pressure should be ≤ 50MPa
Drying and rust prevention: After cleaning, ventilate and dry for at least 4 hours, or blow with cold air; Long term shutdown of nitrogen sealing (humidity ≤ 50%)