Toshiba MMY-MUP0721FT6P-UL Service Manual page 320

No. Part
7-1
4-way WARNING
valve -
Wear a pair of gloves.
detachment/
Otherwise, you will risk an injury involving a replacement
attachment
part or some other object.
Standard
6,8 ton
1.Detachment
High heat
1)Carry out work of No. 1 Cabinet
6 ton
and No.4 Inverter assembly.
2)Disconnect wires around 4-way valve or move them away
from parts to be brazed to prevent them from being fired
while brazing.
3)Cut the C,S and D pipes of the 4-way valve -1,2,
and cut the E,S and D pipes of the 4-way valve -3,
and then remove the 4-way valve.
4)Remove the 4-way valve piping remaining in the
outdoor unit (after cutting)
and the Pinch pipe remaining on the 4-way valve
by brazing.
4-way valve -3
E,S,D (Cut)
E1,2,3
(Evaporator)
Work procedure
Cutting position
S3
E3
D3
S1,2,3
(Suction)
S1
E1
C1
C3
D1
C1,2,3
(Condenser)
D1,2,3
(Discharge)
- 320 -
Remarks
E2
S2
4-way valve -2
C2 C,S,D (Cut)
D2
4-way valve -1
C,S,D (Cut)