Normal downtime is generally non-emergency shutdown, mainly in the following circumstances:

1) blackout shut down, while the compressor is running all of a sudden power failure, should be immediately cut off the power switch and compressor suction valve, exhaust valve closes, and close the supply valve, stop the evaporator liquid, so that next time the machine is started producing excessive evaporator liquid compression.

2) suddenly shut down the water supply, if the water suddenly interrupted, should immediately cut off the power supply, stop the compressor running to avoid the condenser pressure is too high. Immediately after shut down of the compressor off compressor suction and discharge valve and the supply valve, to be identified to eliminate failure, restore water supplies and start again.

3) refrigeration compressor downtime, because of a certain part of the compressor is damaged and much-needed downtime, if time permits you may operate according to normal shutdown, if the urgency of the situation, then disconnect the electric motor power supply, close the suction and discharge valve and the supply valve. If refrigeration equipment running ammonia or refrigerant compressor failure, powerwear protective clothing and masks should be cutting workshop is carried out. You should turn on all exhaust fan, ammonia water water leak parts available when necessary, in order to facilitate repairs.

4) fire downtime Shi, if adjacent of buildings occurred fire endanger refrigeration system of security, should cut power, and quickly open storage liquid device, and condensation device, and ammonia oil separation device, and evaporator the row valve, quickly open emergency unloading ammonia device and valve, makes system of ammonia liquid concentrated in emergency unloading ammonia mouth discharge, and was large of water by diluted, prevent fire spread caused explosion.

5) wet stroke down, at work if the compressor has wet stroke should be dealt with separately according to their severity, mild wet stroke, small or close the suction valve or expansion valves should be closed. For the more serious wet stroke, should immediately stop closing the suction valve, expansion valve. After the serious wet stroke, should put away the refrigerant in the crankcase, or make use of other refrigerant compressor, refrigerant in the crankcase and cylinder out, and change the oil, vacuum and pressure test after the leak, before they can start a trial.