Product Manual

Table Of Contents

5. Transfer Switch Service 7-2019

c. If there is a battery charger, disconnect the battery charger from its AC power source.

d. Disconnect the generator set starting battery negative (-) cable.

e. Remove all AC power to the automatic transfer switch by turning off the feeder breaker in the

main house panel.

f. Remove AC power from any accessory such as battery heater, oil heater, etc.

5.2.2 Transfer Switch Mechanism Removal

1. Remove the upper and lower covers.

2. Use a multimeter in good operating condition to verify that all power has been removed from the

switch.

WARNING

Electric Shock Hazard

Voltages and currents present an electrical shock hazard that can cause severe burns or

death.

Make sure all power is has been removed before proceeding.

3. Remove all control and power wiring from the switch terminals.

4. Loosen and remove the switch assembly:

• Loosen and remove the six bolts securing the cable lugs.

• Loosen and remove all three screws securing the switch to the rear wall of the cabinet.

• Remove the switch from the cabinet.

5.2.3 Transfer Switch Replacement

CAUTION

Carefully follow all hardware torque requirements to avoid damage to parts.

1. Use the hardware that was previously removed to install the new switch in the cabinet.

NOTICE

Do not over-tighten.

• Torque the mounting screws to 7.34 Nm (65 in-lb).

• Torque the cable lug screws to 7 to 8 Nm (62 to 70.8 in-lb).

2. Install control wires.

3. Reinstall the cabinet door panel(s).

5.2.4 Reconnect AC Power (When Finished)

1. Connect the generator set starting battery (negative (-) battery cable last).

2. If there is a battery charger, connect the battery charger to its AC power source.