Hitachi RAS-(3-6)HVNC1(E) Service Manual page 439

10 Servicing
10.7.15.2 Removing Inverter module
1 Remove the service cover following
service cover" in this chapter.
2 Open the P plate turning counter clockwise approxi-
mately 90° following "10.7.9 Opening electrical box (P
plate)".
3 Check that the LED201 (red) on Inverter is OFF when
the P plate is opened.
4 Remove all the wiring connected on the Inverter.
5 Remove 4 screws which fix the Inverter. Hold the wi-
res placed at the bottom side.
6 Pull the Inverter toward right side from the front of the
product. (Remove along with the plastic case and the
radiation fin).
N O T E
• When attaching the inverter PCB, connect the lead wires to match surely the symbols of terminal on the inverter PCB
and the mark bands on the lead wires. If the lead wires are connected incorrectly to each terminal, the electrical com-
ponents will be damaged.
• When the inverter PCB is replaced, the dip switch setting differs depending on the outdoor unit model types. Refer to
"Dip Switch Setting" about the dip switch setting.
10.7.16 Removing other electrical components
1 Remove the service cover following "10.7.1 Removing service cover" in this chapter.
2 Open the P plate turning counter clockwise approximately 90° following "10.7.9 Opening electrical box (P plate)".
• Check that the LED201 (red) on Inverter is OFF when the P plate is opened.
CMC
1 Remove all the wiring connected to CMC.
2 Remove 2 screws fixing the CMC.
Reactor
1 Remove 4 screws fixing the reactor.
Noise filter
1 Remove all the wiring connected to the noise filter.
2 Hold the upper part of the 6 holders with the long
nose pliers and remove the noise filter.
Long nose pliers
Long-Nose Pliers
Noise filter
Noise Filter
Holder
Holder
N O T E
• To connect wiring at reassembling, ensure that the terminal numbers and wiring mark band codes are matched. If con-
nections are wrong, there is the possibility of wrong operation and to cause damage to electrical parts.
• When attaching the PCB, or when attaching the parts attached to the PCB, pay attention not to clamp any wiring bet-
ween plates or electrical components.
425
SMGB0087 rev.0 - 12/2013
"10.7.1 Removing
Magnetic Contactor (CMC)
Fixing Screw
Fixing Screw
Reactor (DCL) Holder
Inverter PCB
Inverter PCB
Fixed with cord clamps
Fixed with Cord Clamp
Fixing
Fuse
Holder
Screw
Noise Filter (NF1)
4 fixing
Fixing Screw
screws
(4 pcs.)
10