ARMY TM 9-6115-604-12
NAVY NAVFAC P 8 633-12
c.
Install. See Figure 4-68.
(1) Install LOCAL REMOTE switch S2 (1) by positioning switch sections at rear of cabinet B door and assemble
the mounting plate from the front. Secure the entire assembly with the three mounting screws.
(2) Replace switch handle in the LOCAL position, attach and secure handle to indicate LOCAL..
(3) Connect wires and discard tags.
4-114. CIRCUIT BREAKER POSITION OPEN INDICATOR DS33 AND CLOSED INDICATOR DS34 (19, Figure
2-2). The DS33 (green) lights indicate whether load circuit breaker CB101 is open and lights DS34 (red) indicate when
circuit breaker is closed.
a.
Test. See Figure 4-72. When a lamp fails to light when expected, proceed as follows:
(1) Set multimeter to 120 VAC scale and check for presence of 120 VAC at lamp holder (12) terminals. If power
is not present when lamp should light, check wiring to the lamp using FO-2. If power does exist at lamp
holder (12) terminals, replace lamp (13) with a known good lamp. Refer to step c, below.
(2) Each indicator DS110 and DS111 is connected in series with a voltage dropping resistor (R110 or R111)
mounted on the rear of the cabinet B door. If 120 VAC is not present at lamp holder (12) terminals,
deenergize the circuit and test resistors R110 and R111 for continuity using a multimeter set to RX 1000
scale. Resistance reading for each resistor should be 3000 ohms ± 10 percent. Replace resistors if they do
not meet this specification.
(3) If known good lamp (6) does not light, replace lamp holder (7). Refer to step c, below.
b.
Remove. See Figure 4-72.
(1) Remove green or red lens (4 or 5) covering lamp (6). Remove lamp (6).
(2) Tag, unsolder, and disconnect wires from lamp holder (7)
(3) Remove lamp holder (7) from panel by removing attaching hardware.
c.
Repair. Repair consists of replacing defective lamp holders (7) and lamps (6). Refer to steps b and d.
d
Install. See Figure 4-72.
(1) Install lamp holder (7) in panel. Secure with attaching hardware.
(2) Connect wiring using shrink tubing as needed to lamp holder (7)
(3) Install lamp (6).
(4) Install green or red lens (4 or 5)
4-115. SYNCHRONIZING LIGHTS DS110 AND DS111 (4, Figure 2-2). The lights indicate phase relationship of bus
and generator set to be paralleled. The lamps are off when the generator set and the bus are in phase.
a.
Test See Figure 4-66 When a lamp falls to light when expected, proceed as follows.
(1) Set multimeter to 120 V ac scale and check for presence of 120 V ac at lamp holder (12) terminals. If power
is not present when lamp should light, check wiring to the lamp using FO-2. Trace back through circuit until
defective wire or Item is found. Repair or replace as required.
(2) If power exists at lamp holder (12) terminals, replace lamp (13) with a known good lamp. Refer to step c,
below.
(3) If known good lamp (13) does not light, replace lamp holder (12). Refer to step c, below.
b.
Remove. See Figure 4-66.
(1) Remove lens covering lamp (13). Remove lamp.
(2) Tag and disconnect wires from lamp holder (12)
(3) Remove lamp holder (12) from panel by removing attaching hardware.
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