How to deal with the leakage problem of the refrigeration system of the supermarket freezer？

When there is a leakage in the refrigeration system of the supermarket freezer, how should we check and repair it? Let’s share with you today!

During the inspection, remove the iron plate of the condenser behind the supermarket freezer, and you can see a raised plastic cover behind it. After removing the foam, you can see where the steel pipe is corroded and leaked. For obvious leakage of pipe fittings, it is easy to use copper welding, and then clean the solder at the welding place, wrap and seal the pipe fittings to prevent the pipe fittings from being corroded by direct contact with water again, refill the insulation material, and fix the plastic cover flat back For the condenser, it is sufficient to add coolant according to the conventional pumping.

When the refrigeration system piping leaks, oil stains can usually be seen on the weld seam or the surface of the evaporator. If the refrigeration system contains moisture, the junction between the capillary tube and the evaporator will freeze and block. In the supermarket freezers that have been used for many years, due to the long-term operation of the compressor, the mechanical wear will produce impurities, which will cause the capillary of the refrigeration system with a small inner diameter or the dry filter to be partially clogged. Check the welded joints of the refrigeration piping.

If there is oil stains, it indicates that the leakage failure is caused by poor welding, and the welding process should be performed again. When the frozen block fails, you can apply a hot towel to the frozen block to restore it after thawing. When removing the dirty and clogging, the relevant parts must be pressurized with nitrogen, such as flushing the oil at the bottom of the evaporator, and cleaning the partially dirty capillary or dry。