ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
bn. SET POWFR Circuit Breaker CB124 and UTILITY POWFR Circuit Breaker CB125 (4 and 5. Figure 2-11). Inspect
the two circuit breakers mounted immediately to the Right side of the control room door. Inspect circuit breakers and
mounting panel for obvious damage Check functional operation of locking beam (3) that prevents simultaneous
operation of circuit breaker. Remove circuit breaker panel cover and check Interiors for loose wiring and damage.
Check for secure panel mounting Replace cover after Inspection.
bo Maintenance of Telephone Circuits (Figure 1-3. Figure 1-4. and Figure 2-2). The telephone circuit consists of a
shielded two-wire coaxial hookup between TEL JACK J15 (22, Figure 2-2) on cabinet B control panel and four
external jacks mounted in pairs on each side of the exterior housing (see Figure 1-3 and Figure 1-4). The telephone
circuit may also be paralleled with the remote control module (RCM) through appropriate terminals in RCM connector
J26. Voice actuated headsets are employed throughout.
Inspect control room TEL JACK J15 and external jacks (Figure 1-3 and Figure 1-4) for damage, secure
mounting, and electrical connections. Check that the protective snap shields are Intact and properly
seated. Open snap shields and Inspect jacks for accumulations of dirt or obstruction.
Inspect voice actuated headset. Check for damage, loose, broken, or kinked headset wires and cables.
Inspect connecting plugs for secure wiring connections and cleanliness.
(2) Remove and repair as follows:
Secure any loose mounting or wiring connection on telephone jacks
Remove any accumulation of dirt or grease Inside jacks.
(3) Replace any obviously defective headset.
bp. Switchgear Circuit Breaker CB123 (Figure 2-12). Main circuit breaker CB123 (3) is mounted inside upper cabinet C
on the right hand side Inspect the circuit breaker for signs of scorching or burning, loose connections, and loose
bq Motor Controllers and Contactors K104A. K104B. K106. and K117. These controllers and contactors are mounted
Inside upper cabinet C on the right hand side. Inspect for signs of scorching or burning, loose connections, and loose
Incandescent Lamps (5 and 6. Figure 2-1. 4. 17. and 19. Figure 2-2. and 4. Figure 2-3). Incandescent lamps are
used as status monitors on generator control cabinet B, for annunciator alarm indicators on control cabinet A, and as
status monitors and for panel Illumination on engine control cabinet C.
Inspect. Inspect all Incandescent lamp assemblies on cabinets A, B, C Open cabinet doors and check
lampholders for secure mounting and electrical connections Inspect for front panel light lenses for damage and
Ensure that there Is no power provided to the Incandescent lamp socket being tested.
Test socket for continuity with a multimeter set for resistive reading (RX1) Multimeter should indicate
infinite resistance, replace bulb.
Replace Typical incandescent lamp replacement procedure is as follows:
Remove lens on front panel by unscrewing from Integral lampholder.
Remove defective lamp by unscrewing.
Install replacement lamp and replace lens.
bs. Neon Lamps (14. Figure 2-2). Neon lamps are used as phase sequence test lamps on control cabinet B.
Inspect. Open control cabinet B door and inspect lampholder for secure mounting and electrical connections.
Inspect front panel lamp lens for damage and secure mounting.