Hitachi RAS-4-HNCE - Removing Electronic Expansion Valve Coil; Removing Solenoid Valve Coil (SVC)

10. Servicing
341
SMGB0079 rev.0 - 01/2013
10
10.3.1.11 Removing electronic expansion valve coil
1 Remove the service cover following Removing service cover in this chapter.
2 Open the P plate turning counter clockwise approximately 90° following Opening electrical box (P plate).
• Check that the LED201 (red) on Inverter is OFF when the P plate is opened.
D A N G E R
DONOTtouchelectricalcomponentswhiletheLED201(Red)andLED1(Red)areONtoavoidelectricalshock.
WaituntiltheLEDturnoff.
3 Disconnect the CN5A connector on the control PCB of
the electrical box.
4 Hold the coil of the expansion valve and pull out
upward.
It is easier to remove the expansion valve coil if it is
rotated while pulling it upward.
Expansion Valve Coil Release Lock
Pull the expansion
valve coil upward
with holding.
Hold the coil of the
expansion valve
and pull out upward
Expansion valve coil
Release lock
5 When reassembling after replacing the expansion valve coil, perform the procedure in the reverse way of removing.
The expansion valve coil is equipped with a lock mechanism. After attaching the expansion valve coil, rotate it until the
sound of locking is heard.
N O T E
Fixthewiresbyplasticbandstotheoriginalposition.
10.3.1.12 Removing solenoid valve coil (SVC)
1 Remove the service cover and the upper cover following Re-
moving service cover and Removing upper cover.
2 Unplug the connector PCN14 (SVC) on O.U. PCB1.
3 Remove the xing screw, and remove the solenoid valve coil
(SVC) upward.
4 When reassembling after replacing the solenoid valve coil, per-
form the procedure in the reverse way of removing.
N O T E
Fixthewiresbyplasticbandstotheoriginalposition.
D A N G E R
DO NOT touchelectricalcomponents while theLED1 (Red)
isONtoavoidelectricalshock.WaituntiltheLEDturnsoff.
Solenoid
valve
Solenoid
valve coil
Solenoid valve
coil screw