Three ways to determine whether cold water machine need to add refrigerant

Many users in the process of using cold water machine, will find enough cold, cold water machine the beginning can run cool after a period of time found that the drop in temperature, small make up today by three methods to distinguish the refrigerant is insufficient, and then look for other reasons. A, current method: using clip-on ammeter monitoring the working current outdoor ( Including the compressor and the fan current) , if the current value in line with nameplate nominal rated current, shows refrigerant appropriate; If is lower than the rating too much, the refrigerant is too little, should be added. Gage pressure method: refrigeration system low voltage side pressure level is related to how much refrigerant. Beijing refrigerant manufacturer hint at low pressure valve connected to pressure gauge, refrigeration and air conditioning switched on at the beginning of the gage pressure drops, run more than 10 minutes, if the gage pressure steady at 0. About 49 mpa as normal. Three, observational method: to observe the near near the high pressure valve outdoor high pressure pipe and low pressure valve of low pressure pipe condensation. Beijing refrigerant manufacturer suggest general condensation pressure tube, and cold, if the low pressure tube and condensation, have cold feeling, about 3 ℃ temperature is higher than high pressure pipe, refrigerant suitable. If the low pressure pipe condensation, have warm feeling, then refrigeration dose is not enough, need to add; If condensation of low pressure pipe, or compressor start 1 minute or so every time, low pressure pipe frost, after again into dew, explain too much refrigerant, to put off some. The above three methods to measure current and observe high pressure, low pressure pipe condensation situation is given priority to, combination table method, to determine whether to add refrigerant. Beijing refrigerant manufacturer suggest it is important to note that the air conditioning refrigeration, outdoor fan must be open, otherwise the evaporator air around failing to disperse, decreased evaporation temperature, evaporation pressure drop, read the table of small pressure, current is small, the wrong result.

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