Hitachi RAS-(4-12)HRNM(2)(E) - Oudoor Units RAS-(8-12)HRNM

10 Servicing
385
SMGB0064 rev.0 - 08/2011
10
3 Check to ensure the LED201 (Red) of the inverter PCB is off when opening P-mounting plate.
4 Remove other electrical components according to the procedure below and the gures on Chapter 10.
D A N G E R
• Check that the LED201 (red) located on the “W” surface PCB is OFF when opening the P-mounting plate.
• Do not touch the electrical components when LED201 (Red) located on the “W” surface PCB is ON in order to
avoid an electrical shock.
N O T E
• Disconnect all the wires connected with the smoothing capacitor (CB CB1 CB2 CA).
• The wire has polar characters. Identify the wire mark band and the indication on the smoothing capacitor when
wire connecting.
• Remove the two (2) screws xing the smoothing capacitor and remove the smoothing capacitor.
• Disconnect all the wires connecting with the magnetic contactor (CMC1).
• Remove the two (2) screws xing the magnetic contactor and remove the magnetic contactor.
• Remove the four (4) screws xing the reactor and remove the reactor (DCL).
• Disconnect all the wires connected with the noise lter (NF1).
• Remove the noise lter by clamping the top of the holder (6 portions) with a pincher.
• Identify the terminal numbers with mark band. When reassembling the terminals have to be connected to the
correct numbers . If incorrectly connected malfunctions or damages will occur.
10.2.3 Oudoor units RAS-(8-12)HRNM

Removing service cover
N O T E
• Remove the main parts according to the following procedures.
- To reassemble perform the procedures in reverse.
- To prevent contamination of the refrigerant with water or foreign particles do not expose open to atmos-
phere for long periods.
- If necessary seal pipe ends using caps or tape.
1 Remove the four (4) xing screws.
2 Slide the service cover downward and remove it.
3 Pay attention of not falling off the service cover.
1. Service cover.
1