Toshiba MMY-MAP0806HT8P Service Manual page 285

N . o P a t r o t b e e r p a l c e d
9※) 4-way valve
- detachment/
attachment
(continued)
MAP14A6
MAP16A6∗
MAP1806∗
MAP2006∗
MAP2206∗
※) This process
"No.9" doesn't need
for cooling only
models because it
doesn't have 4-way
valve.
For HT8(J)P, HT7(J)P, HT8(J)P-ME, HT7P-ME,
T8(J)P-E, HT8P-A, HT8P-C model
Cutting through of pipes
located above 4-way
valve (3 locations)
4-way valve
Removing of brazed point
for pipe located below
4-way valve (1 location)
W o k r p o r
WARNING
Wear a pair of gloves.
Otherwise, you will risk an injury involving a
replacement part or some other object.
Before starting the work, be sure to recover the
refrigerant of outdoor unit by removing it with a
refrigerant recovery device.
1. Detachment
1) Remove the lower cabinet (left and right).
2) Remove the inverter box in accordance with the
dismantling instructions.
3) Disconnect the 4-way valve coil and get all wiring
located near the 4-way valve out of the way.
4) Since it is difficult to simultaneously remove the
brazed points for the pipes located above the 4-
way valve (3 locations), cut through them just
below the brazed points using a saw, etc.
5) Detach the pipe located below the 4-way valve.
6) Remove the end sections of the pipes above the
4-way valve, which were cut in step 5).
7) Install a new 4-way valve.
* Provide adequate cover for the 4-way valve to
protect it from overheating. During the installation,
insert pipes firmly into the 4-way valve, or a
blockage or leakage involving brazing filler metal
may result.
8) Reinstall all the coils removed in step 3), and put
the wiring back to its initial state.
9) Reinstall the inverter box in accordance with the
installation instructions.
10) Reinstall the lower cabinet.
Support plate
*1)Be careful for support-plate near the 4way-valve
c e d u e r
For HT8(J)P-E, HT8(J)P-TR model
*1
when conduct the replacement.
− 284 −
R e m a k r s
6) End sections of pipes (3 locations)
4) Cutting line
4-way valve
Brazed point