Hitachi YUTAKI Series - Removing Other Electrical Components

257
RHUE-(3~6)A(V)HN
SMGB0066 rev.0 - 12/2009
Servicing
Service Manual
9
 

Remove the service cover according to the section 1.
“Removing service cover” in this chapter.
Open the P-mounting plate by rotating it 90 degrees to 2.
the left according to the section “Opening electrical box
(P-Mounting Plate)” in this chapter.
Check to ensure the LED201 (Red) of the inverter PCB 3.
is off when opening P-mounting plate.
Remove other electrical components according to the 4.
procedurebelow,andtheguresonchapter9.

danger
Electrical hazard. Risk of death. -
Check that the LED201 (red) located on the inverter -
module is OFF when opening the P-mounting plate.
Do not touch the electrical components when LED201 -
(Red) located on the inverter module is ON in order to
avoid an electrical shock.
Disconnect all the wires connected with the smoothing
capacitor(CB,CB1,CB2,CA).
If 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 electrical-
noiselter(NF1).
Removethenoiselterbyclampingthetopoftheholder
(6 portions) with a pincher.

note
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.