Mitsubishi Electric e Series Service Handbook page 158

[ IX Troubleshooting ]
1
Right side service pannel
M5 screw × 9
< Opposite side of the service side >
2
< Right side >
Drain valve
3
< Left side >
4
Housing joint (2 locations)
M12 nut × 4
Housing joint
(1-system side)
M12 nut × 2
HWE20010
Service panel × 2
M5 screw × 16
Left side service panel
M5 screw × 9
< Left side >
Drain valve
Check joint
(in order from top to bottom)
· HP 2B
· HP 2A
· HP 1B
· HP 1A
· LP 2B
· LP 2A
· LP 1B
· LP 1A
Outlet water
pipe
Housing joint
(2-system side)
M12 nut × 2
Middle water pipe
Inlet water
pipe
- 149 -
Remove the service side panels from the
1
opposite side of the service side.
Panel: Fixed with M5 screws (3.0±0.3 Nm)
1 Completely drain the water from the water circuit.
Recover 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 heat exchanger needs to be replaced.
■
Refrigerant (R32)
EAHV type: 11.5 kg per system
EACV type: 4.7 kg per system
Remove the middle water pipe.
1
Housing joint: M12 nut
Remove the housing joint from the heat
2
exchanger to be replaced, and then remove the
water pipes.
Housing joint: M12 nut
GB