Midea MSE-07CR, Service Manual

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Service manual
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5. Use torque wrench to tighten the service
port cap to a torque of 1.8 kg.m. (18n.m)
6. Set the 3-way valve to the opened position.
7. Mounted the valve stem nuts to the 2-way
and 3-way valves.
8. Check for gas leakage.
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At this time, especially check for gas leakage
from the 2-way and 3-way stem nuts, and from
the service port.
Caution:
If gas leakage is discovered in step (3) above,
take the following measures.
If the leaks stop when the piping connections are
tightened further, continue working from step (4).
If the gas leaks do not stop when the connections
are retightened, repair the location of the leak,
discharge all of the gas through the service port,
and then recharge with the specified amount of
gas from a gas cylinder.
8.5 Pumping down (Re-installation)
Procedure
1. Confirm that both the 2-way and 3-way valves are set to the opened position.
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Remove the valve stem caps and confirm that the valve stems are in the opened position.
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Be sure to use a hexagonal wrench to operate the valve stems.
2. Operate the unit for 10 to 15 minutes.
3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way
valve.
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Connect the charge hose with the push pin to the gas service port.
4. Air purging of the charge hose.