Hitachi RPI-0.8FSG1 Service Manual page 216

SERVICING
(2.5 2-Way Cassette Type)
(9) Tighten the lock nut with spanner after tightening lightly by hand.
The tightening torque shall be within the range of 12Nm (120kg-cm) to 15Nm (150kg-cm).
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.
The direction of the eccentric part of the motor is assembled as the eccentric part of although the
motor is directed toward the counter direction 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 below.
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.
Pulse Motor
Gear
Output Shaft
Lock Nut
Valve Body
(10) After completion of the replacement, attach the electronic expansion valve in the reverse procedures
for removing.
2-76
TURN OFF all power source switches.
Bellows
Valve
Valve
Sheet
Fig. 1 Expansion Valve
Tool
Drive Part
Adjustment of direction is not required.
Valve Part
Fig. 2 Direction of Drive Part
Phillips Screwdriver