Toshiba MMY-MUP0721FT6P-UL Service Manual page 322

No. Part
7-2
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
10~16 ton
1.Detachment
High heat
1)Carry out work of No. 1 Cabinet
8,10 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.
Cutting position
4-way valve -2
C,S,D (Cut)
E1,2,3
(Evaporator)
Work procedure
E2
S2
C2
D2
D1
S1,2,3 C1,2,3
(Suction) (Condenser)
D1,2,3
(Discharge)
- 322 -
E3
S1
S3
C3
E1
C1
Remarks
4-way valve -3
E,S,D (Cut)
D3
4-way valve -1
C,S,D (Cut)