Methods of handling sudden failures of precision air conditioners

Methods of handling sudden failures of precision air conditioners

1. Leakage treatment steps for precision air conditioning units

　　Leak handling operation precautions: Never destroy the vacuum artificially. If it is not certain that the unit has indeed leaked air into the unit, operation cannot be performed.

　　1. The operation of pumping to remove non-condensable gas requires confirmation of the fault. If it cannot be confirmed, the following steps will be cancelled.

　　 2. Stop the machine and use mechanical vacuum pump to pump air.

　　3. Fill the unit with R22 by means of gas filling, and fill it to a gauge pressure of 0.07MPa.

　　 4. Turn on the ventilation equipment in the computer room.

　　 5. Use an electronic halogen leak detector to find out the leak location.

　　 6. Make corresponding repairs or contact the manufacturer for repairs.

　　7, exclude R22.

　　 8. Perform a vacuum operation.

　　 2. The processing steps for the solution pump not running

　　 1. Check the power supply voltage, check the phase sequence, check for phase loss, and check the fuse.

　　 2. Start the solution pump and check the current.

　　 3. Stop the solution pump operation.

　　 4. Find out abnormal data.

　　 Three, the processing steps of precision air conditioning freezing

　　 1. Stop heating.

　　2. Reduce the amount of cooling water, and the refrigerant water (cold water) pump continues to run.

　　 3. When the outlet temperature of the refrigerant water (cold water) reaches 8°C, normal operation resumes.