Operating instructions

7.3 Power Module Shutdown

When a power module needs to be removed from service, an Alpha APP60-S Service Power

Supply is recommended as an alternate non-standby power source to prevent interruption

to the cable plant. NOTE: When powering down a module, always switch the battery breaker

OFF before removing AC, otherwise the module will transfer into inverter operation.

Procedure

1. Plug the APP60-S "Jones" connector into the SPI (Service Power Inserter).

2. Plug the APP60-S power cord into the enclosure's convenience outlet. Switch the

APP60-S ON. NOTE: Verify that the 30 / 60 VAC selector is in the desired position.

3. Toggle the switch on the SPI from "ON" to "ALT".

4. Switch the battery breaker on the front panel of the AM Series module OFF, or remove

the fuse.

5. Unplug the AM Series module's power cord from the enclosure's convenience outlet.

6. Wait approximately 1 minute for the module's capacitors to fully discharge.

7. Disconnect the wires from the module's 10-pin terminal strip. Do not let the exposed

battery cables come in contact with the chassis or enclosure.

8. Remove the hold-down screw and carefully slide the module out of the enclosure.

CAUTION: The ferroresonant transformer generates heat and may cause burns if

handled with bare hands.

9. Reverse this procedure, when re-installing a module. Always test the power module

before toggling the switch on the SPI back from "ALT" to "ON".

APP60-S Service Power Supply

AC Line cord to enclosure's

convenience outlet

"Jones" connector to enclosure's

SPI (Service Power Inserter)

ON/OFF Switch

30 VAC / 60 VAC

Selector Switch

AC Output Fuse

AC Input Fuse

7. OPERATION