Removing Electronic Expansion Valve Coil - Hitachi FSG Series Service Manual

2
SERVICING
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WARNING: TURN OFF all power source switches
5. Draw the fan leftward with lifting up the bearing side of the
fan slightly, the fan and the fan motor are removed.
6. For attaching the fan motor and the fan, perform the
reverse procedures for removing.
7. Fix the fan at the position with 8mm clearance between the
left end (bearing side) of the fan and the partition plate.
8. Fix the fan motor with the outlet of the lead wire at the
position as shown below.
2.5.10 REMOVING ELECTRONIC EXPANSION
VALVE COIL
1. Remove the front panel according to the item 2.5.2,
"Removing Front Panel".
2. Remove the electrical box according to the item 2.5.5,
"Removing Electrical Box Cover".
3. The butyl sheet is adhered around the piping of the heat
exchanger, electronic expansion valve and the inlet and
outlet piping of the electronic expansion valve.
Remove the butyl sheet of the surface of the piping, the coil
part of the expansion valve and the part of the valve body
4. Prepare two (2) spanners. Hold the part of the valve body
with one spanner and loosen the lock nut with another
spanner by turning the lock nut counterclockwise.
NOTE:
Do not hold the motor part when loosening the lock nut by
spanner. The base of the drive part may turn idle and be
broken.
Turn the lock nut by a few turn, and the drive part is
separated from the screw and can be removed.
Prepare the new drive part for replacement (service part)
with the position of the driver (drive screw) already
adjusted.
NOTE:
During replacement work, pay attention to the separation
part and prevent the dust, foreign particle, etc. from
entering into the separation part. (The exposed part by
separation is the mechanical part of the valve.)
Do not hurt the junction part of the valve with the tools.
Put the drive part onto the valve body, hold them with their
axes matching and attach the lock nut to the screw part of
the valve body. Tighten the lock nut with spanner after
tightening lightly by hand.
The tightening torque shall be within the range of 12 Nm
(120 kg-cm) ~ 15 Nm (150 kg-cm)
Lift up the fan and draw it
leftward
Loosen Screw
Partition
8mm
Plate
Bearing
Fan Motor
Lead Wire of Motor
Expansion Valve Coil
Heat Exchanger
Remove Butyl Sheet
Remove Butyl Sheet
Lead Wire of
Expansion Valve
Fan Motor
Partition Plate
Fan Motor
60°