User's Manual

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 36.
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 29.
Disconnect the wires from the power switch
(112).
4. Remove the switch terminal blocks, unscrew the
retaining nut, and remove the switch.
5. Install the new switch.
6. Reconnect the wires to the positions as noted
above.
7. Reinstall the
cover (117) and tighten the screws
(124).
8. Turn on power a
t the main circuit breaker.
Figure 34 Replacing the Power Switch
46 3A2800B