Midea MFGA-60ARDN1-QC2 Service Manual page 16

d. The bendable pipe may not be bent for more than 3 times.
Bend the thin pipe
a. While bending, expose the pipe by cutting the concave gap on the bending
heat-insulation pipe(roll it with soft band after bent).
b. To avoid pipe deformation, the radius is the bigger the better.
c. Use a pipe-bending device to make the compact bending pipe.
5.3.2.2 Using bronze pipe selling in market
Completely shut the cut-off valves of the outdoor unit (as ex-work status). After the
refrigerant pipe has been connected with both the indoor and outdoor unit, let the air
exhaust out from the maintenance gap on he low-pressure cut-off valves of the
outdoor unit. Screw the nuts tightly on the maintenance gap after the air has been
drained.
5.3.2.3 To make the refrigerant pipe unblocked completely
You should keep the cut-off valves of the outdoor unit completely open after you have
finished the above steps (5.3.2.1 or 5.3.2.2)
Note:
1.Before screwing the reamer nut, smear the pipe and the connecting surface with
refrigerant oil;
2.Check and make sure there is no leakage by soap-water or leakage-checker after
connecting;
3.Be sure the connecting joint on the indoor side is insulated.
4.Use two wrenches to connecting the pipes.
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