Pressure Test Levels

[pramoddhiman]

Hi friends...one question is bothering me from a very long time...CAN WE CHARGE OUR REFRIGERATION SYSTEM (compressor, condenser, Evaporator and refrigerant control device: i mean complete system) with 400psg. N2 or dry air pressure for leak testing purpose is this is advisable or not ??

[nike123]

Hi friends...one question is bothering me from a very long time...CAN WE CHARGE OUR REFRIGERATION SYSTEM (compressor, condenser, Evaporator and refrigerant control device: i mean complete system) with 400psg. N2 or dry air pressure for leak testing purpose is this is advisable or not ??

For split system air conditioning (found on Mitsubishi HI manual):
Required pressure for testing air tightness in connecting pipes and indoor units of split system air conditioners prior to opening service valves and evacuation is:
R22 = 2.94MPa = 368PSIG
R407C = 3.23MPa = 468PSIG
R410A = 4.15MPa = 602PSIG

For outdoor unit, maximum pressure could depend on installed elements max pressures indicated at each element (compressor and etc...).