Hitachi RAF-25NH5 Instructions De Service page 292

The smoothing capacit-
ors (330µF x 3pcs.) are
charged to about 380V.
Don't forget to discharge
them before attempting
access to electric parts.
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DI CHARGING CAPACITOR
1.
Turn off the indoor unit's power switch or unplug the power cord, and wait for
a minute or so.
2. Open the cover of the electric parts compartment. Discharge electricity from
smoothing capacitors (330µF x 3pcs.) by connecting the leads of a soldering
iron of 30-75W to the terminals provided for this purpose. Continue discharg-
ing for more than 15 seconds.
Ｕ
Ｐ ２
N1
P1
PM2 (system power module)
oldering iron of 30-75W
- 322 -
moothing capacitor
Connecting cord (¿2, single lead)
trip off insulation for about
20 mm at the end.
V
W
−
L1 +
L2
Do not use a soldering
iron with built-in
transformer : the fuse
built in the transformer
would blow out.