Performing the gas leak tests
Make sure to check for gas leaks before completing the installation process (connecting the assembly pipe and hose between
indoor unit and outdoor unit, insulating the cables, hose and pipe, and fixing the indoor unit to the installation plate).
Test part for outdoor unit
Tightening torque for body cap
(Refer to the table)
Charging
core
R-22: Diameter of the screw - 7/16-20UNF
R-410A: Diameter of the screw - 1/2-20UNF
Tightening torque for charging port cap
(Refer to the table)
To check for gas leaks on the outdoor unit,
Check the valve A and B using a leak detector.
To check for gas leaks on the indoor unit,
Check the flare nut C and D using a leak detector.
Midea ODM Latin America IB&IM_HP_EN.indd 44
C
A
B
Test part for indoor unit
Before inspecting the leakage, use a torque wrench
to close the cap for the service valve. (Comply with a
tightening torque for each size of the diameter,and
tighten the cap firmly to prevent any leakage.).
To check for any possible leakage, insert inert gas into
Spindle
the pipes connected to indoor/outdoor units and
check the connection part of the indoor/outdoor units
with soap lather or liquid for leakage test.
Outer
Diameter
(mm)
ø 6.35
ø 9.52
ø12.70
ø15.88
ø19.05
( 1 N•m = 10 kgf•cm )
English-44
D
Tightening torque
Charging port cap
Body cap (N•m)
(N•m)
20 ~ 25
20 ~ 25
25 ~ 30
10 ~ 12
30 ~ 35
35 ~ 40
2014/6/11 11:42:43