1. Carry out the leak test of the ice machine evaporator regularly. Leakage is a common fault phenomenon of the evaporator.Pay attention to leak detection in the course of operation.
If ammonia evaporator leaks, there is irritating odor, leakage point does not frost. Leakage can be checked by phenol phenol test paper. Because the ammonia is alkaline, it becomes red meeting phenolphthalein paper. With eyes, usually somewhere in the evaporator that does not frost is usually a leak point, also can find leakage with soap water.
The leakage inspection of flake ice machine evaporator can be done by a halogen lamp and a halogen leak detector, or with soapy water. To see if there is oil traces on the evaporation tube first when checking. Because Freon and oil can be dissolved, when freon leaks, the oil will leak from the leakage point. So where the oil traces, where the leakage. With halogen light detection, if there is a fluorine leak, the halogen burning flame will change from blue to light green, grass green, purple, purple and other colors, which can determine how much of the freon leakage. If the flame is dark green or purple, the phosgene in the flames is toxic. This method can not be used for a long time. In this case, you can check the leak with soapy water. For micro leaks, use a halogen leak detector for the leak detection.
2. Chen the frost condition of flake ice machine evaporator regularly. When the frost is too thick, it should be timely defrost. When the frost is abnormal, it may be caused by congestion. It should promptly find the reasons and be excluded.
3. When the evaporator is deactivated, the refrigerant will be kept in the reservoir or condenser, so that the pressure of the evaporator will be kept at about 0.05MPa (gauge). If the evaporator in the salt pool, also need to rinse with tap water, filled with tap water in the pool when rinsed.