120
OPERATING PROCEDURE
PHOTOS
10. 4-way valve disassembly procedures:
(1) Remove the side panel (Refer to 1).
(2) Remove the top panel (Refer to 1).
(3) Remove the electrical parts box (Refer to 4 or 5).
(4) Recover gas from the refrigerant circuit.
(5) Remove the 4-way coil (21S4)
w
1 (Refer to 7).
(6) Remove the mounting screws from the gas side ball
valve (2 pcs : 5
o
16).
(7) Remove the field piping from the outdoor unit (gas side).
(8) Remove the welded portion.
1
Upper and lower heat exchanger inlet (T connector).
2
Accumulator inlet (T connector)
3
4-way valve inlet
(9) Remove 4-way valve.
✻
Do not expose 4-way valve to above 120°C.
Only PUMY-125VMA model
w
1 4-way valve (21S4)
Photo 11
Photo 12
Photo 13
11. Solenoid valve disassembly procedures:
(1) Remove the side panel (Refer to 1).
(2) Remove the electrical parts box (Refer to 4 or 5).
(3) Recover gas from the refrigerant circuit.
(4) Remove the solenoid coil (SV1)
w
1 (Refer to 7).
(5) Remove the welded portions of the solenoid valve.
(take care excessive heating)
Only PUMY-125VMA model
w
1 Solenoid valve (SV)
12. Expansion valve disassembly procedures:
(1) Remove the side panel (Refer to 1).
(2) Remove the electrical parts box (Refer to 4 or 5).
(3) Recover gas from the refrigerant circuit.
(4) Remove welded portions of expansion valve.
(take care excessive heating)
✻
To remove welded portion, cut the band holding it and
remove the rubber tube.
Pipe of heat exchanger inlet (T connector)
Accumulator inlet
(T connector)
Fixing screws
Gas side ball valve
4-way valve inlet
4-way valve
Solenoid coil
W
1
Welding parts
Expansion valve
Band
Rubber tube
Welding parts
Oil separator
OC183E--4.qxp 10.5.6 0:54 PM Page 120
