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Filling method in supermarket commercial refrigeration refrigeration
1, gaseous injection method: the commercial refrigeration to be repaired is turned on, and at the same time pay attention to the refrigerant cylinder upright slowly and intermittently open the valve of the tooling, then you can hear hissing The hissing air intake sound, and at the same time you can see that the pressure gauge rises slowly from the original negative pressure —1, the pressure can be closed for a while when it reaches 0.3, and then use the refrigerated showcase commercial refrigeration to judge the injection How much.
is generally suitable at 0.5, and the whole process can be completed in more than 30 minutes. The advantage of gaseous perfusion is that it is safe and not easy to produce liquid hammer. The disadvantage is that it is slow and easy to bring the residual air components in the tank into the commercial refrigeration, so the effect is not the best.
2, commercial refrigeration refrigerant liquid injection method: note that the refrigerant cylinder must be inverted commercial refrigeration to be repaired and cannot be turned on, open the valves intermittently and put in, pay attention to the commercial refrigeration refrigerant After the liquid evaporates and equalizes, it can be started up and run in minutes, and then refill it appropriately according to several methods.
This situation is not the early performance of commercial refrigeration without cooling. After a long period of time, the temperature of the commercial refrigeration will rise and slowly start to stop cooling, but the compressor of the commercial refrigeration is still working. A good way to judge whether the commercial refrigeration is good or bad , If the compressor is working, but the two sides of the commercial refrigeration do not generate heat (most of the commercial refrigeration is now like this), it can be initially determined.
3, frost on the wall of the refrigerator compartment.
For mechanical temperature control commercial refrigeration, especially in a high temperature environment, frost can be seen on the wall of the refrigerating room, and the frost layer is thick, resulting in non-stop commercial refrigeration. The main reason for this situation is that the temperature of the thermostat is adjusted too low, or the food storage position in the cabinet is not correct, the commercial refrigeration door is opened too many times, and the commercial refrigeration door seal is not well insulated. The solution to
is to first shut down the commercial refrigeration, remove the frost on the wall of the refrigerator, adjust the position of the thermostat, and restart after checking the door seal. If the commercial refrigeration is normal, this phenomenon will be resolved. If there is a problem with the commercial refrigeration itself, it should be dealt with by the manufacturer.
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