Hitachi RAS-4.0TNESNH1 - Indoor Unit Fan Motor Service

4
4
.
.
D
D
I
I
S
S
A
A
S
S
S
S
E
E
M
M
B
B
L
L
Y
Y
A
A
N
N
D
D
A
A
S
S
S
S
E
E
M
M
B
B
L
L
Y
Y
F
F
O
O
R
R
C
C
O
O
M
M
P
P
R
R
E
E
S
S
S
S
O
O
R
R
A
A
N
N
D
D
M
M
O
O
T
T
O
O
R
R
Indoor unit
Ducted（1.0/1.5HP）
Removal and Assembly of Fan Motor
Important: Before removing the fan, make sure power to the system is disconnected.
Step Illustration Handling Instruction
1. Unplug the motor
cables
Use screwdriver to
remove the electric box
cover and un
plug the
motor cables in electric
box.
2. Remove the base
board
Loose and take out the
screws fixing
the base
board, then remove the
base board.
3. Remove the
screws on fan
sub-assembly.
Remove the screws on
fan sub-assembly.
4. Removing the fan
cage enclosure
Rotate the fan cage
housing toward supply
opening and remove.
5. Loosen the fan and
motor.
Loosen the screws
holding the fan cage to
the motor shaft by using
hexagon screwdriver.
Remove outer housing
holding motor in place.
6. Replace the motor
Remove the motor from
the support bracket.
Then remove the fan
cages from the motor
shafts. Remove the motor
from the air inlet and
replace with new motor.
Be sure to tighten the
cages onto the motor
shafts.
7. Reassembly of the
unit
Reassemble the unit in
the reverse order
of
disassembly and test
operation.
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