Hitachi FS3 Series, Service Manual

Page: 149 / 240

2
SERVICING
35
$
WARNING: TURN OFF all power source switches
NOTE:
Do not apply the strong forces such as the rotating torque
and the bending load to the motor by holding the motor by
hand when tightening the lock nut.
Although the direction of the eccentric part of the motor is
assembled with the eccentric part of the motor directed
toward the counterdirection of the fittings for piping at the
valve body, the alteration of this direction do not affect the
open/close function of the valve.
Therefore, the adjustment of the direction of the motor part
is not required if the position of the motor is moved toward
the rotating direction after replacement as shown in the
Figire 2.
However, pay attention to the direction of the motor for the
coil of the electronic expansion valve not to touch other
pipings and the side plate of the electrical box.
5. Attach the removed butyl sheet to the electronic expansion
valve again.
6. After completion of the replacement, attach the electronic
expansion valve in the reverse procedures for removing.
2.6 FLOOR TYPE
2.6.1 REMOVING INTAKE AIR GRILLE
1. Loosen the screws for fixing plate at the right side of each
intake air grille, and move the fixing plates.
2. By pushing the knob at both sides of the intake air grille
towards the arrow mark direction, the grille can be opened
with an angle of 30°
3. Remove it from the hinged part.
Pulse Motor
Drive Part
Gear
Output Shaft
Lock Nut
Bellows
Valve
Valve Seat
Valve Part
Fig. 1. Expansion Valve
Fig. 2. Direction of Drive Part
Adjustment of direction
is not required
Knob