ARMY TM 96115-604-12
NAVY NAVFAC P-8-633-12
(2) Service.
(a) Secure loose wiring connections.
(b) Clean Instrument cover glass using lintless material dampened with cleaning compound P-C-438A, or
equivalent.
(c) Remove all accumulated debris.
f.
60 Hz CLOCK M110 and 50 Hz CLOCK M111 (1 and 6, Figure 2-3) Inspect faces for cleanliness, damage, or
cracks. Adjusting stems should be secure, not bent, and operational Check wires for security.
g.
KILOWATT HOURS Counter CNTR (7. Figure 2-3). Inspect for cleanliness and signs of damage. Check
security of panel mounting and wiring connections.
h.
GROUND FAULT Relay K115 (11. Figure 2-3). Inspect for cleanliness and signs of damage Check security of
panel mounting and wiring connections at rear of control panel.
i.
Overcurrent Relay K114 (10. Figure 2-3). Inspect for cleanliness and signs of damage Check security of panel
mounting and wiring connections at rear of control panel.
j.
Annunciator Panel A9 (4. Figure 2-3). Inspect front of annunciator panel A9 for cleanliness and damage. Check
security of mounting clamps at rear of panel. Check that the hinged panel containing the fault lamps Is secured.
Check that the three pushbutton switches below the annunciator panel are secure and undamaged Check for
loose, frayed, or broken wiring.
k.
CROSS CURRENT ADJUST Rheostat R105 (9. Figure 2-3). Rheostat R105 Is mounted on a bracket inside the
upper section of cabinet A. Inspect for cleanliness and signs of damage Check security of mounting, wiring
connections, and ensure that switch handle turns freely.
I.
FREQUENCY SFL SW S118 (8, Figure 2-3). The relay switch S118 is mounted on a bracket inside the upper
section of cabinet A. Inspect for cleanliness and signs of damage. Check security of mounting, wiring
connections, and that switch handle turns freely. Check for satisfactory operation of click stops in both 50 and 60
Hz positions.
Avoid contact with any exposed terminals or cables on transformers even when
generator set is shut down. Dangerous residual voltages can cause death or
injury to personnel.
m. Ground Fault Transformer T100. Inspect fault transformer T100 (Figure 3-26) for signs of damage or burned
insulation. Overheating will be evident by telltale odor. Wiring should be secure and not damaged.
n.
Voltage Regulator Transformer T102. Inspect for cleanliness and debris In area of voltage regulator transformer
T102 (Figure 3-26) Inspect for signs of damage, burned Insulation, and telltale odors of overheating. Wiring
should be secure.
o.
Ground Fault Resistor R100. Inspect ground fault resistor R100 (Figure 3-26) located on the lower left inside wall
of cabinet A (as seen from the generator compartment) Check for secure mounting, wiring connections, and
signs of overheating. Check resistors on the bank for cracks.
p.
Generator Instrument Transformers T104. T106. T107. and Bus Instrument Transformers T108. T109. and T110.
See Figure 3-26. Inspect transformers for cleanliness. Check security of wiring and attachments. Inspect for
damage, burned Insulation, and telltale odors of overheating.
q.
Strip Heater H107. Strip heater H107 (Figure 3-26) Is mounted on the rear of the shelf supporting voltage
regulator transformer T102. Inspect for security of mounting and wiring connections and for scorching.
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