Hitachi FS3 Series, Service Manual

Page: 163 / 240

2
SERVICING
49
$
WARNING: TURN OFF all power source switches
2.10.2 CLEANING 4-WAY CASSETTE TYPE INDOOR
UNIT
■
Spread a vinyl sheet over the floor to protect furnitures, etc.
from cleaning water before this work.
Procedure:
1 Remove the optional air panel according to page 2-15
and the item, 2.3.4, ”Removing Optional Air Panel”.
2 Remove the electrical box after opening the electrical
box cover and disconnecting the connectors between
the indoor and outdoor units and other connectors
according to page 2-15 and the item, 2.3.3, ”Removing
Electrical Box Cover”.
3 Remove the bell-mouth and fan according to page 2-16
and the item, 2.3.5, ”Removing Turbo Fan and Fan
Motor”.
4 Remove the drain pan according to page 2-19 and the
item, 2.3.9, ”Removing Drain Pan”.
5 Remove the float switch according to page 2-18 and the
item, 2.3.7, ”Removing Float Switch”.
6 Remove the drain-up mechanism according to page 2-
18 and the item, 2.3.8, ”Removing Drain-up
Mechanism”.
NOTES:
Remove the drain pan after removing drain water on the
drain pan.
1 Remove the drain water on the drain pan after pulling
out the rubber plug. Check to ensure that water can
flow smoothly through the hole by pricking it with a
pencil.
2 Remove the drain pan after removing four fixing
screws. Carefully remove the drain pan, since drain
water may remain at the bottom of the drain pan.
3 Clean and dry the drain pan after removing. Carefully
handle the drain pan not to damage it.
1. Attach a vinyl sheet around the heat exchanger so that
cleaning water will not be splashed over the insulation
surface and drain-up pump. Fix the vinyl sheet on the side
plate of the heat exchanger by using tape with adhesive.
Seal the gap between vinyl sheets using tape with
adhesive.
NOTE:
Wear gloves to avoid any injury by fins of the heat
exchanger .
In addition to magnets, fix the motor cover using tape with
adhesive
Motor Cover
Water Collector
Before attaching the
water collector to the
heat exchanger, take
the following work.
Put a vinyl sheet here
to protect insulation
sheet from the
splashed cleaning
water.
Motor Band
Magic Tape
Magnet
Tape with Adhesive
Magnet
Motor
Cover
Magnet
Magnet
Inner Side
Vinyl Sheet
(A,B,C,D)
5 Nos.