Limit Switches - Addison UHA 150 Installation, Operation & Service Manual

UHA S U H
TANDARD NIT EATER
15.9.1 Fan Removal and Replacement
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.
Description
Axial Fan UHA[X][S] 150 - 175
Axial Fan UHA[X][S] 200 - 250
Axial Fan UHA[X][S] 300 - 400
*For units built after July 2011.
For units built before July 2011, P/N 90710416.
15.9.2 To Replace the Fan Assembly
To replace the fan assembly, reverse the procedure
shown above.
• Check that the fan blades are free to rotate
before turning on the power to the fan.
• Strictly comply with the color code of the fan
wires to ensure correct operation. See Page 24,
Section 10.5 wiring diagram.
• Use only genuine replacement parts sold and
supplied by Addison.
46 of 49
I O
NSTALLATION PERATION AND
Part Number Qty.
90710417* 1
90710417 1
90710416 2
S M
ERVICE ANUAL

15.10 Limit Switches

15.10.1 Removal and Replacement
1. Remove the electrical connections to the
switch.
2. Unscrew the two screws securing the switch.
3. Fit a new switch with two screws.
4. Reconnect the electrical connections and test
operation.