Mitsubishi Electric PUMY-P36NKMU4 Technical & Service Manual page 160

OPERATING PROCEDURE
16. Changing the fusible plug
See the following descriptions.
• Be careful not to expose the fusible plug to the braze torch
flame or transfer heat to it. (See Photo 17)
• The temperature of the fusible plug must not become 140°F
(60°C) or more while working. Protect the fusible plug with a
wet cloth when necessary.
(The fusible plug breaks at 158°F [70°C]).
• Tighten the screw in 14 - 18 N·m* (11-13 lbf·ft) with 2
wrenches.
*1 N·m ≈ 10 kgf·cm
17. Removing the thermal protector (TRS))
(1) Remove the service panel. (See Photo 1)
(2) Remove the cover panel front. (See Photo 1)
(3) Pull out the lead wire of high pressure switch and discon
nect the connector, 63H (yellow) from the multi controller
board in the electrical parts box. (See Photo 11)
(4) Remove the comp felt covering the compressor. (See
Photo 14)
(5) Loosen the clamp or band for the lead wire of the electri-
cal parts box and separator.
(6) Pull out the thermal protector (TRS) from the holder. (See
Photo 18)
18. Removing the fuse holders
(1) Remove the service panel. (See Photo 1)
(2) Remove 2 screws (4 x 10) for cont base to remove the
cont base. (See Figure 4)
(3) Remove the fuse covers. (See Figure 5)
(4) Remove screws (3 x 12) for fuse holders to remove the
fuse holders. (See Figure 4 and Photo 19)
Notes:
1. Bracket, circuit board and other parts can get deformed
when inserting and removing the fuse cover.
2. Remove the fuse cover in the way that surrounding parts
will not be affected.
OCH811A
PHOTOS/FIGURES
Photo 17
Fusible plug
Photo 18
Thermal protector
(TRS)
Photo 19
Fuse holders
Figure 4
cont base
screws for
cont base
(4×10)
160
Figure 5
fuse covers
screws for
fuse holders
(3×12)