Hitachi RASC-10HNPE, Руководство по обслуживанию, Страница: 174 / 306

9 Servicing
Removing components
SMGB0091 rev.2 - 11/2015 164
9.3.13 Replacement of the expansion valve coil
1 In order to access to the unit’s internal parts, remove the following covers and panels depending on access
restrictions:
a. If upper cover can be removed, remove it as described in section “9.3.6 Removing upper cover” and access to the
unit’s internal parts from the upper side.
b. If upper cover cannot be removed, remove the cycle service cover as described in section “9.3.1 Removing cycle
service cover” .
2 Disconnect the CN5A connector on the RASC PCB1.
3 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.
4 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.
Electronic expansion valve coil
9.3.14 Replacement of the solenoid valve coil (SVA and SVC)
1 In order to access to the unit’s internal parts, remove the following covers and panels depending on access
restrictions:
a.
If upper cover can be removed, remove it as described in section “9.3.6 Removing upper cover” and access to the
unit’s internal parts from the upper side.
b. If upper cover cannot be removed, remove the cycle service cover as described in section “9.3.1 Removing cycle
service cover” .
2 Unplug the connector PCN7 (for SVA) and PCN14 (for SVC) on the RASC PCB1.
3 Unscrew the fixing screw, and remove the solenoid valve
coils (SVA and SVC) by pulling upward.
Removing Solenoid Coil (SVC)
Screw
Removing Solenoid Coil (SVA)