INVENTOR P8MVI32-09WiFi, Руководство по обслуживанию

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23
Procedure
1). Confirm that both the 2-way and 3-way
valves are set to the opened position
Remove the valve stem caps and confirm
that the valve stems are in the opened
position.
Be sure to use a hexagonal wrench to
operate the valve stems.
2). Connect the charge hose with the push
pin of handle lo to the 3-way valves gas
service port.
3). Air purging of the charge hose.
Open the handle Lo valve of the manifold
valve
slightly to purge air from the charge
hose for 5 seconds and then close it
quickly.
4). Set t
e 2-way valve to the close
position.
5). Operate the air conditioner at the
cooling cycle and stop it when the gauge
indicates 0.1MPa.
6). Set the 3-way valve to the closed
position immediately
Do this quickly so that the gauge ends up
indicating 0.3 to 0.5Mpa.
Disconnect the charge set, and tighten the
2-way and 3-way valve’s stem nuts.
Use a torque wrench to tighten the 3-way
valves service port cap to a torque of
18N.m.
Be sure to check for gas leakage.
2. Air purging with vacuum pump
1) Completely tighten the flare nuts of the
indoor and outdoor units, confirm that
both the
2-way and 3-way valves are
set to the closed position.
2) Connect the charge hose with the push
pin of handle lo to the 3-way valves gas
service port.
3) Connect the charge hose of handle hi
connection to the vacuum pump.
4) Fully open the handle Lo of the
manifold
valve.
5) Operate the vacuum pump to evacuate.
6) Make evacuation for 30 minutes and
check whether the compound meter
indicates -0.1Mpa. If the meter does not
indicate -0.1Mpa after pumping 30
minutes, it should be pumped 20
minutes more. If the pressure can’t
achieve -0.1Mpa after pumping 50
minutes, please check if there are
some leakage points.
Fully close the handle Lo valve of the
manifold valve and stop the operation of
the vacuum pump. Confirm that the gauge
needle does not move (approximately 5
minutes after turning off the vacuum
pump).
7) Turn the flare nut of the 3-way valves
about 45° counterclockwise for 6 or
7seconds after the gas