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MISE EN GARDE
Si une fuite d’un joint de brasage a été détectée, le gaz inerte doit passer
par le système lors de la réparation du joint afin de prévenir l’entartrage et
l’oxydation du système. Le tartre et les oxydes peuvent bloquer les éléments
de réfrigération et causer une défaillance du système.
CAUTION
Always use the system specified refrigerant when pressuring to perform a leak test.
MISE EN GARDE
Utiliser toujours le réfrigérant du système précisé lors de la mise sous
pression dans le but de réaliser un essai de fuite.
System Evacuation
Evacuation of the refrigeration system is necessary to remove all air and moisture from
the system. A reliable rotary vacuum pump with an accurate deep vacuum gauge is
recommended. Do not use the system compressor as a vacuum pump and do not
operate the compressor while the system is under vacuum.
Evacuation of “PR” model systems:
Open both the liquid and suction service valves.
Ensure the solenoid valve is energized and open.
Connect vacuum pump to the liquid and suction service valves located on the
condensing unit.
Evacuate the system to 250 microns and maintain for a minimum of 4 hours.
Perform a vacuum decay test for a minimum of ten minutes to ensure the system
is leak free and dry.
Evacuation of “PC” model systems:
Leave the service valves closed, the condensing unit has been evacuated and is
charged with refrigerant.
Ensure the solenoid valve is energized and open.
Connect vacuum pump to the liquid and suction service valves. located on the
condensing unit.
Evacuate the system to 250 microns and maintain for a minimum of 4 hours.
Perform a vacuum decay test for a minimum of ten minutes to ensure the system
is leak free and dry.
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