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Maintenance of cold storage

[2011-11-25]

1, regularly check the power supply voltage is normal (three-phase four-wire), check the power supply is the total gate of the normal protective function effectively. temperature controller
2, the refrigerator should be avoided during operation, vibration, vibration in addition to increasing mechanical wear and tear on the unit will lead to loose connections or broken pipes. The machine during operation, if found abnormal noise, should be down to check, remove and then run. Refrigeration compressor protection functions have been pre-configured, no need to adjust.
3, always check and verify whether the power supply voltage requirements, the voltage should be 380V ± 10% (three-phase four-wire). Long-term cold storage when not in, the total power should be cut off cold storage and cold storage facilities to ensure no damp, not gray Aye, and other material contamination.
4, the cold storage door hinges, handles, door locks should be based on the actual situation on a regular basis to add oil.
5, cold storage equipment, electrical equipment maintenance should be by an electrician or electrical knowledge who know how to operate, any repair must be cut off power supply to ensure safety.
6, as a result of air humidity is too large, the defrost interval for a long time, storage temperature setting is not normal, all of which can lead to frost on the evaporator database layer thickening, storage temperature did not fall. Then it should be defrosting (defrosting) processing. And timely observation, such as frost disappears immediately stop defrost. Wait a moment and then start the device.
7, the regular inspection of the refrigeration unit connecting pipe, valves, connecting tube is solid on, whether there is refrigerant leakage (generally where there will be traces of oil leakage). Leak detection method is most useful: a sponge or soft cloth dampened with detergent, rub from the foam, and then evenly applied to leak detection in place, observe a few minutes. If the leakage air bubbles will appear. Marking the place where the leak, and then do the fastening or welding process (by a professional staff overhaul of the operating refrigeration).
8, cold storage equipment, electrical equipment must be kept so as to avoid leakage electric shock.
9, the condenser on the refrigeration unit can easily be contaminated should be cleaned regularly according to the actual situation. Order to maintain good heat transfer. Good heat dissipation, cooling do. Do not pile debris around the refrigeration unit.
10, cold storage equipment, bank temperature, temperature and other parameters, these should be based on the actual situation and set the cold, can not arbitrarily change the parameters. Refrigerator factory customized according to user requirements, to understand the technical parameters of cold storage and then to set the parameters on the controller.
11, above the cold storage equipment (roof) should not put their things, or cold deformation of the library board will affect the insulation performance, and maintain unobstructed access around the refrigerator, only to ensure good heat dissipation, cooling can be good. Placed in cold storage location should be kept dry, clean, non-inflammable and explosive materials, to ensure that no security risk. Items shall not be stacked before the evaporator (set aside a certain gap), so as not to affect the cooling effect.
12, the compressor should avoid frequent start, stop gap each time should not be less than 6 minutes. Found that the compressor oil level drops as oil lens or dirty, add or replace the need for timely, can not join the right grades and long-term exposure to moisture in the air, resulting in more failure refrigeration oil, otherwise it will lead to high carbon, low temperature wax precipitation, motor insulation damage, the system back to the oil difficult to fault. Constant attention to the compressor shell, body and cylinder head temperature at the compressor operation to determine whether it is normal. Refrigeration compressor is usually the case do not need to refuel. If you determine that fuel should be dedicated professionals to join compressor oil, the amount of fuel developed by professionals, not blindly add.