Addison UHA 150, Installation, Operation & Service Manual

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UHA S
TANDARD
U
NIT
H
EATER
I
NSTALLATION
O
PERATION AND
S
ERVICE
M
ANUAL
46 of 49
15.9.1 Fan Removal and Replacement
*For u nits bu ilt after J u ly 2011.
For u nits bu ilt b efore J u ly 2011, P/N 90710416.
15.9.2 To Replace the Fan Assembly
To replace the fan assem b ly, reverse the proced u re
sho w n a b ove.
• Check that the fan b lades are free to rotate
b efore t u rning on the po w er to the fan.
• Strictly comply w ith the color code of the fan
w ires to ens u re correct operation. See Page 24,
Section 10.5 w iring diagram.
• Use only gen u ine replacement parts sold and
s u pplied b y Addison.
15.10 Limit Switches
15.10.1 Removal and Replacement
1. Remove the electrical connections to the
s w itch.
2. Unscre w the t w o scre w s sec u ring the s w itch.
3. Fit a ne w s w itch w ith t w o scre w s.
4. Reconnect the electrical connections and test
operation.
Description Part Number Qty.
Axial Fan UHA[X][S] 150 - 175 90710417* 1
Axial Fan UHA[X][S] 200 - 250 90710417 1
Axial Fan UHA[X][S] 300 - 400 90710416 2
WARNING
Severe Injury Hazard
Turn off gas and electrical supply before
service.
Fan can start automatically at any time.
Failure to follow these instructions can
result in severe injury or product damage.
Remove the screws
and washers.