Midea MFGA-60ARDN1-QC2 Service Manual page 15

should vacuum the indoor unit through the maintenance port on the cut-off valves, or open
the high-pressure valve, and exhaust the air through the maintenance port on the
low-pressure valve(closed). It will take about ten seconds. Then screw tightly the
maintenance port. (When supplement the refrigerant, fill through the maintenance port
of the low-pressure valves on the outdoor unit ).
e) Open all the valves completely before power on the system, or it will be sick for low
efficiency.
f) Gas leak check. Make sure no gas from connections with leak detector or soap water.
Caution:
A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.
Caution in Handling the Packed Valve
a. Open the valve stem until it hits against the stopper. Do not try to open it further.
b. Securely tighten the valve stem cap with a spanner or the link.
Notes for the bendable pipe
a. The bendable pipe should be used on the indoor side;
b. Bend angel may not exceed 90 degrees;
c. The bend location should be made on the center of the pipe if possible, as for bend
radius, the bigger the better;
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