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7. EVACUATION
7.1
EVACUATE THE REFRIGERANT LINES AND INDOOR COIL
DO NOT OPEN THE SERVICE VALVES UNTIL THE REFRIGERANT LINES AND INDOOR
COIL LEAK CHECK AND EVACUATION ARE COMPLETE. REFRIGERANT CAN LEAK AND
•
Connect the vacuum pump to evacuate
the refrigerant line set and indoor coil.
•
Evacuate until the micron gauge
reads no higher than 350 microns
or less (Fig. 22), then close OFF the
valve to the vacuum pump.
•
Observe the micron gauge. Evacuation
is complete if the micron gauge
does not rise above 500 microns in
one minute and no more the 1000
microns in 10 minutes (Fig. 23).
•
When vacuum pressure rises more
then 1000 microns but holds steady
below 2000 microns it indicates the
presence of moisture and/or non-
condensible or presence of small
leak. If vacuum pressure stays
constantly at 2000 microns or it rises,
it indicates the presence of leak.
•
If the leak is found, perform the
necessary repair and repeat
the evacuation process.
•
Once evacuation is complete, close the
valves on the manifold gauge set, turn
off and disconnect the vacuum pump.
WARNING
!
MAY CAUSING MILD TO SEVERE BURNS.
!
22
23
13
IOM
W415-2973 / B / 07.18.22
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