Hitachi RAS-(2-6)HVNP1(E), Руководство по обслуживанию

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10 Servicing
410
SMGB0087 rev.0 - 12/2013
Removing Transistor Module (IPM)
1 Disconnect all the wirings connected to the transistor module.
2 Remove the connectors CN2, CN3, CN206, PCN301 and PCN302
from the transistor module.
3 Disconnect the wirings of P N U V W on the transistor module.
4 Remove 4 M4 fixing screws on the transistor module.
5 Remove the transistor module from the electrical box.
6 Reassemble the parts in the reverse order of removing order.
N O T E
Identify terminal with the mark band when reassembling to avoid inco-
rrect wiring.
1
Screws for transistor module
(M4)
2
Screw (M5)
3
PCN301
4
PCN302
5
Screws for PCB (M3)
6
CN3
7 Inverter PCB
8
CN206
9
CN2
10
LED201
10.6.15 Removing other electrical components
1 Remove the service cover following “10.6.1 Removing service cover” in this chapter.
2 Open the P plate turning counter clockwise approximately 90° following “10.5.9 Opening electrical box (P-Mounting
Plate)”
.
• Check that the LED201 (red) on Inverter is OFF when the P plate is opened.
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.