Hitachi FS3 Series, Service Manual

Page: 132 / 240

2
18
SERVICING
$
WARNING: TURN OFF all power source switches
2.3.7 REMOVING FLOAT SWITCH
1. Remove the intake air grille according to the item 2.3.2,
”Removing Intake Air Grille”.
2. Remove the bell-mouth and turbo fan according to the item
2.3.5, ”Removing Turbo Fan and Fan Motor”.
3. Remove the service access cover after removing three (3)
fixing screws near the pipes inside of the indoor unit.
4. Removing Float Switch
Remove the float switch after removing one (1) fixing screw
from the fixing plate of the heat exchanger
NOTE:
Carefully handle the float switch. Do not drop it on the floor.
If dropped, malfunction may occur. When mounting, do not
use a motor-driven screwdriver.
2.3.8 REMOVING DRAIN-UP MECHANISM
1. Remove the service access cover near the pipes according
to the item 2.3.7, ”Removing Float Switch”.
2. Remove two (2) screws(A) fixing the fixing plate for the
drain-up pump after removing the wiring connector. Loosen
the fixing screw(B), remove the fixing plate from the fixing
screw(B) and pull out the drain-up mechanism.
3. Firstly support the drain-up mechanism by hand so as not
to drop. Remove the hose band from the drain hose,
disconnect the drain hose, and then remove the drain-up
mechanism.
Service Access Cover
Float Switch
Fixing Plate for Drain-Up Mechanism
Fixing
screw
(B)
Fixing
screw
(A)
Connector