Hitachi FSXN Series, Руководство по обслуживанию

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10.11.4 Removing the reversing valve coil (RVR1, RVR2)
1 Remove the screw -A- from the reversing valve coil with a
Philips screwdriver. If it is difficult to remove the screw, use an
adjustable wrench or spanner.
2 Remove the reversing valve coil -B-.
10.11.5 Removing the reversing valve
1 Remove the front service cover as described in the procedure Removing the front service cover , see on page 292 .
2 Remove the electrical box, wiring and electrical box stay as described in the procedures Removing the electrical box
for RAS-(8-12)FSXN , see on page 295 , Removing the electrical box for RAS-(14-18)FSXN , see on page 295 , Removing
the electrical box stay for RAS-(8-12)FSXN , see on page 296 and Removing the electrical box stay for RAS-
(14-18)FSXN , see on page 296 .
3 Before starting with the task, collect the refrigerant from the refrigerant circuit into a cylinder and turn OFF the unit's
power supply line.
4 The position of the reversing valve -C- is shown in the figure.
5 Disconnect the wiring of the reversing valve coil.
6 Remove the reversing valve coil -B- (RVR1) and -D- (RVR2) as described in the procedure Removing the reversing
valve coil (RVR1, RVR2) , see on page 315 .
7 Remove the welding points -A- and cover the reversing valve with a wet cloth to avoid the heat.
RAS - (8-12) FSXN RAS - (14-18) FSXN
N O T E
• Remove only the welding -A- shown in the figure, otherwise leaks may occur when you fit the reversing
valve.
• In the case of the heat pump system, connect the charge hose to the low pressure gas stop valve check
joint before removing the welding.
8 Remove the assembly of the reversing valve. Remove only the welding that is shown in the figure and cover the reversing
valve with a wet cloth to avoid the heat.
A
B
10 Servicing
315
SMGB0065 rev. 1 - 12/2010
10