Gree GWC09AA, Инструкция по установке и обслуживанию

Страница: 92 / 136

GREE Service Manual GWC09AA / K5NNA6A Page 92
Leak Testing with N
2
/H
2
Trace Gas
This method consists of pressurising the empty refrigerant circuit with the Form-
ing Gas mixture
N
2
/H
2
Trace gas. A pressure, usually about 5 bar (72.5 PSI) is
applicable. The subsequently carried out Leak Test using a Hydrogen (H
2
)
Trace Gas Leak Detector shall cover all potential areas of possible leakages.
Provide a filled Forming Gas Cylinder (containing the H
2
/N
2
mixture gas)
equipped with reliable pressure regulator and transfer hose (T), having a ¼ ”
SAE female adapter and with Schrader valve core depressor.
The warning sign is still placed in the work-area because we are now handling a
pressurised (about 250 bar) gas cylinder with a gas mixture and after works the
gas is intentionally blown off from the system to the ambient area!
L
T
Never switch
ON the AC
system if
charged with
Trace Gas
mixture!
Cylinder filled with
Nitrogen (N
2
) and
Hydrogen (H
2
)
mixture 95% / 5%
N
2
/ H
2