REMOVAL AND INSTALLATION PROCEDURES. cont'd

TM 5-6350-264-14&P-11

NAVELEX EE 181-AA-OMI-120/E121 C-7359-60-1

T.O. 31S9-2FSS9-1-11

Twenty-five-zone power supply is heavy. Use caution when lifting.

To remove twenty-five-zone Monitor Cabinet power supply, unlock and open cabinet door. Unlatch and swing

out the mounting racks just above power supply. Position power supply switch S1 to POWER OFF. Turn off

external ac power by turning off circuit breaker. Remove nuts from captive screws that secure power supply

in cabinet. Slide power supply forward. Tag and disconnect wires from TB3. Remove cable clamps from

power supply cover. Remove screws and lock washers and remove terminal board cover from TB1 on power

supply. Tag and disconnect all interconnecting wires from TB1 and TB2. Lift the power supply at left end and

lower right end off of ledge. Remove power supply from cabinet.

(1)

To remove switch S1 from power supply, remove screws that secure cover and remove cover. Tag,

identify and disconnect wires on switch S1. Remove nut securing switch and remove switch.

(2)

To install new switch, insert new switch and secure with nut. Connect wires to switch. Install cover and

secure with screws.

To install new twenty-five-zone Monitor Cabinet power supply, position power supply in cabinet. Connect all

interconnecting wires to TB1 and TB2. Position terminal board cover on TB1. Install cable clamps on power

supply cover. Connect interconnecting wires to TB3. Install mounting screws. Turn on external ac power by

turning on circuit breaker. Close and latch mounting racks. Close and lock cabinet door.

To remove Status Monitor Module, unlock and open cabinet door. Unlatch and swing out the mounting rack.

Remove mounting screws that hold Status Monitor Module in position. Remove module from mounting rack.

To install new Status Monitor Module, position module in rack and install mounting screws. Close and latch

mounting rack. Close and lock cabinet door.

To remove Status Monitor Module switch S1 or S2, unlock and open cabinet door. Unlatch and swing out

mounting rack. Remove mounting screws that hold Status Monitor Module in position. Remove module from

mounting rack and place on bench. Remove mounting screws and remove side cover. Remove hex nut from

switch. Pull switch to the rear. Tag wires and use a soldering iron of 50 watts maximum to disconnect wires

from switch. Remove switch.

To install new Status Monitor Module switch S1 or S2, use a soldering iron of 50 watts maximum to connect

wires to switch. Position switch in front panel with locating washer next to panel and internal tooth lock

washer next to switch. Install hex nut on switch. Position side cover on module and install mounting screws.

Position Status Monitor Module in mounting rack and install mounting screws. Close and latch mounting rack.

Close and lock cabinet door.

After replacement of major components or assemblies, test the MC for proper operation as follows.

(1)

Turn mode switch on CU to ACCESS, open CU door, and pull Tamper Alarm Switch (TAS) plunger all

the way out. Turn mode switch to TEST/RESET and then to SECURE. Monitor cabinet should indicate

a secure condition.

5-49