Mitsubishi Electric e Series Service Handbook page 148

[ IX Troubleshooting ]
1
< Left side >
2
M5 screw × 2
Pillar
M5 screw × 2
3
Suction pipe
4
Three
connectors
Pressure sensor fixing plate
HWE20010
Check joint
(in order from top to bottom)
▪ HP 2B
▪ HP 2A
▪ HP 1B
▪ HP 1A
▪ LP 2B
▪ LP 2A
▪ LP 1B
▪ LP 1A
M5 screw × 2
M5 screw × 2
M4 screw × 4
(Also on the opposite side)
M5 screw × 4
(Also on the opposite
side)
Rotate
Breaker box
M5 screw × 2
Check joints
Recover the refrigerant through the check joint
1
(low-pressure (LP) side) on the left side of the
unit next to the plate heat exchanger side.
* Each refrigerant circuit is independent.
Only collect the refrigerant from the system
whose LEV needs to be replaced.
■
Refrigerant (R32)
EAHV type: 11.5 kg per system
EACV type: 4.7 kg per system
1 When replacing compressors 1B, 2A, and 2B,
remove the pillars by unscrewing the eight M5
screws.
Pillar: Mounted with M5 screws (3.0±0.3 Nm)
* When the pillar is removed, the frame will sag
down by its own weight.
When replacing compressor 1A, remove the four
1
M5 screws and four M4 screws, and move the
breaker box out of the way, avoiding the wire
running near the suction pipe.
Remove the two check joints, two pressure
1
sensors, and three connectors.
Remove the pressure sensor fixing plate by
2
unscrewing the two M5 screws.
* The pressure sensor or the high pressure switch
does not need to be removed from the pipe fixing
saddle to do the work.
- 139 -
GB