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Repair
Replacing the Power Switch
NOTICE
To avoid damaging the circuit boards when
servicing the control box, wear Part No. 112190
grounding strap on your wrist and ground
appropriately.
To avoid electrical component damage, remove all
system power before plugging any connectors.
1. Follow the steps in Before Servicing, page 34.
2. Loosen the screws (124) and remove the
enclosure cover (117).
3. Note the position of the power switch input and
output wires. See Electrical Schematics, page 27.
Disconnect the wires from the power switch
(112).
4. Remove the switch terminal blocks (T), unscrew
the retaining nut (N), and remove the switch.
5. Install the new switch.
6. Reconnect the wires to the positions as noted
above.
NOTICE
Failure to follow the electrical schematic could
result in damage to the electrical components.
7. Reinstall th
e cover (117) and tighten the screws
(124).
8. Turn on powe
r at the main circuit breaker.
Figure 32 Replacing the Power Switch
332709B
47