Frigidaire FRS12PYW10 Use & Care Manual page 24

When using the vacuum pump
For method of using a manifold valve, refer to its operation manual.
1. Completely tighten the flare nuts at
connection point A, B, C and D.
Connect valve core removal tool to
the charging port, then connect Outdoor unit
vacuum hose to valve core tool.
Open the schrader valve.
Note: The schrader valve is inside
the charging port.
indoor unit
2. Connect the other charge hose of
manifold valve to the vacuum pump.
3. Fully open the handle Lo of the
manifold valve.
4. Operate the vacuum pump to
evacuate. After starting evacuation,
slightly loose the flare nut of the
Lo valve on the gas pipe side and
check if the air is entering (Operation
noise of the vacuum pump changes
and a compound meter indicates
0 instead of minus), then tighten
the flare nut. The procedure verifies
if there are blocks inside the tubes.
5. Make evacuation for 15 minutes
or more and check that the
compound meter indicates
-7.6 x 10_pmHg (-lxl0_Pa).
After the evacuation is completed,
fully close the handle Lo of the
manifold valve and stop the
operation of the vacuum pump.
6. Turn the stem of the packed
valve B
about 4,5 °
counterclockwise for 6-7
seconds after the gas comes
out, then tighten the flare nut
again. Make sure the pressure
Manifold valve
-76cm/Hg
Charge
hose
Handle Lo Handle Hi
_ Charge hose
.
.
9.
Vacuum pump
display in the pressure indicator is
a little higher than the atmosphere
pressure. This procedure verifies if
the refrigerant goes through the
tubes correctly.
Close the schrader valve, then
remove the valve core tool.
Replace the charging port cap.
Fully open the packed valve
stems B and A.
Securely tighten the cap of the
packed valve.