Toshiba MMY-MUP0721FT6P-UL Service Manual page 315

No. Part
1. Detachment
4 Waterproof
cover
1) Stop the air conditioner operation, and turn off the
assembly
circuit breaker.
2) Remove the inverter assembly.
(Refer to the detachment for No.4 inverter assembly.)
3) Remove the binding band at the upper of the refrigerant
cooling heat sink and the fixing rubber at the lower.
4) Loosen the clamp at the left side of the waterproof cover
(INV-BOX square type : 2 pcs, rectangle type : 3 pcs) to
remove the fan motor and reactor.
5) Remove the screws fixing right side of the cover and
remove the two hooks hanged on the pillar.
(M5 × 0.4'' (10mm), 7 pcs)
6) Remove the screws fixing left side of the cover and two
hooks hanged on the pillar, and remove the cover from
the right side of the heat sink while turning the cover
clockwise.
(INV-BOX square type : M5 × 0.4'' (10mm), 4 pcs
rectangle type : M5 × 0.4'' (10mm), 5 pcs)
NOTE
Remove the refrigerant cooling heat sink with care not to
bend it.
2. Attachment
1) Carry out installation by following reverse procedure in
the detachment 1) to 5).
NOTE
If the refrigerant cooling heat sink is twisted significantly,
adjust it so that it is parallel to the contact surface with the
refrigerant cooling heat sink of the box; otherwise, poor
contact may cause operation stop.
1) Carry out installation by following reverse procedure
in the detachment 1) to 7).
NOTE
Align the refrigerant cooling heat sink with the rib at the
upper-center of the fixing rubber to install the fixing rubber
for the heat sink.
Work procedure
6) Remove the left waterproof cover
from the right side of the heat
sink, while turning the cover
clockwise.
Fixing the right waterproof
cover
5) Fixing screw (Red)
(6 to 16 ton : 7 pcs)
Hooking claw
(Black : right 2 pcs)
Fixing the left waterproof
cover
5) Fixing screw (Blue)
(INV-BOX square type :
4 pcs, rectangle type :
5 pcs) Hooking claw
(Black : left 2 pcs)
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Remarks
3) Cut the binding band
Align the heat sink with
the rib at the upper-center
of the fixing rubber to
install the fixing rubber.
Engraving
Binding band
Fix the refrigerant cooling heat sink
positioned along engraving of
waterproof cover.
3) Remove the screws
(M4) and the clamp,
and remove the fixing
rubber.
4) Remove the fan motor
and reactor lead from the
clamp.
(INV-BOX square type : 2 pcs
rectangle type : 3 pcs)