Hitachi RAS-(2-6)HVNP1(E), Service Manual

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10 Servicing
452
SMGB0087 rev.0 - 12/2013
Capacitors
1 Remove all the wiring connected to the capacitors.
N O T E
The wires have polar characters. Identify the wire mark band
and the indication on the capacitor when connecting wires.
2 Remove 2 screws fixing the capacitors.
CMC
1
Remove all the wiring connected to CMC.
2 Remove 3 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.
Holder
Long-Nose Pliers
Noise Filter
Holder
Noise filter
Long nose pliers
CMC
IPM
Reactor
Diode module
Capacitor
Noise filter
Fuse
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.
• From the Power Wires (U Phase, V Phase, W Phase) of Inverter Compressor (MC1), please make sure that the 2 wires
of U Phase and V Phase pass through the current sensors (CTU • CTV) of Inverter PCB (PWB3). Also make sure that
the Power Wire of U Phase is connected to the U Phase side of current sensor (CTU), and that V Phase is connected
to the V Phase side of current sensor (CTV). If the combination is wrong, it could be a cause of wrong operation and
damage.
• 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.
• Screws, Bushes and Collars are used to fix the Inverter PCB. Please use Bushes and Collars without fault when atta-
ching the Inverter PCB. Failure to do so may cause wrong operation.
• When replacing the Control PCB, please set the Dip Switches with the same configuration as the PCB before replace-
ment. Wrong settings may cause wrong operation. Also, please confirm the replacement instructions supplied with the
PCB sold as a service part.
• Do not apply too much force to the electrical parts mounted on the PCB or to the PCB itself. It may cause failure of the
PCB.