Lennox LI036HI-180P432, Owner'S Manual

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3 2
Vacuum pumping
Leakage detection
1. Remove the valve caps on
the liquid valve and gas
valve and the nut of refri-
gerant charging vent.
2. Connect the charging hose
RISLH]RPHWHUWRWKHUHIUL
gerant charging vent of gas
valve and then connect the
other charging hose to the
vacuum pump.
2SHQWKHSLH]RPHWHUFRP
pletely and operate for
10-15min to check if the
SUHVVXUHRISLH]RPHWHUUH
mains in -0.1MPa.
4. Close the vacuum pump
and maintain this status for
1-2min to check if the pres-
VXUHRISLH]RPHWHUUHPDLQV
in -0.1MPa. If the pressure decreases, there may be leakage.
5HPRYHWKHSLH]RPHWHURSHQWKHYDOYHFRUHRIOLTXLGYDOYHDQGJDVYDOYH
completely with inner hexagon spanner.
6. Tighten the screw caps of valves and refrigerant charging vent.
7. Reinstall the handle.
Use vacuum pump
liquid valve
gas valve
refrigerant
charging vent
nut of refrigerant
charging vent
vacuum pump
piezometer
valve cap
Lo Hi
inner hexagon
spanner
open
close
1. With leakage detector:
Check if there is leakage with leakage detector.
2. With soap water:
If leakage detector is not available, please use soap water for leakage detection.
$SSO\VRDSZDWHUDWWKHVXVSHFWHGSRVLWLRQDQGNHHSWKHVRDSZDWHUIRUPRUH
than 3min. If there are air bubbles coming out of this position, there's a leakage.