Refrigerant bulk cylinders and some service cylinders are fitted with two shutoff valves, which are colour coded and marked to indicate delivery of either liquid…
Tag: Refrigerator Repair
This method is not always acceptable to manufacturers, since it involves putting refrigerant liquid into the high side of the system. If the compressor discharge…
A slight loss of refrigerant is recognized by ‘bubbles’ in the liquid-indicating sight glass installed in the liquid line of a system, a loss of…
When it is necessary to add refrigerant to a system after a loss it indicates that there is a leak in the system. The leak…
This procedure transfers the refrigerant circulating around the system from the liquid shut-off valve at the liquid receiver to the inlet of the compressor for…
Although the common refrigerants (RI2, R22, R502 etc.) are not considered hazardous, it must be remembered that all refrigerants are heavier than air and will…
This is carried out on new system installations or when a plant has been discharged of refrigerant prior to repair. It involves the use of…
During normal service operations a leak test does not entail a prior evacuation of the system unless the system is contaminated or the refrigerant has…
Some plants may be charged at the time of installation with a refrigerant which contains a coloured dye to provide a visual indication of leakage.…
Although the task of fitting gauges is a simple one, it must be realized that any refrigerant has a pressure/temperature relationship: the higher the temperature…