Hitachi RWM-(H)FSN3E, Service Manual

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11 Servicing
SMGB0070 rev. 1 - 08/2011
295
11
Remove the rubber cap and the thermistor on the top of the
compressor.
Remove the crankcase heater (Oil heater on the lower
case).
No. Part
1 Upper cover
2 Rear panel
3 Check joint
4 Crankcase heater
5 Rear pipe cover
6 Lower part of service panel
7 Valve stay
No. Part
1 Sound-proof cover
2 Cut part
3 Oil heater

Removing the compressor
Remove the service cover and the lower part of the service panel according to the section Removing service cover and
the section Removing lower part of service panel and rear panel . In case that the outdoor unit is installed close to a wall
closely, sepparate first the outdoor unit from the wall.
Collect the refrigerant from the liquid stop valve, the gas stop valve and the check joint at the piping.
Open the sound insulation cover wrapped around the compressor and remove the terminal box cover at the compressor
fixed by one (1) screw. Disconnect the compressor wires in the terminal box and remove the sound insulation cover.
N O T E
Check and take note of each terminal number and indications for its correct connection at the reasembling pro -
cess. If wires are connected in incorrect order, it will lead to a compressor failure.
1
2
3
4
5
6
7
1
3
2
Direction to remove the cover