TM 5-6115-465-12
TO 35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06859D-12
Load Bank Troubleshooting
CORRECTIVE ACTION
PROBABLE CAUSE
MALFUNCTION
a. Replace switch (para. 4-25).
a. Defective load selector
Load bank does not
switch.
apply load to gen-
erator
b. Repair or replace wiring (para. 4-25).
b. Defective wiring.
a. Replace lamp (para. 4-25).
a. Defective lamp.
Indicator light
does not illum-
b. Replace or repair wiring (para. 4-25).
b. Defective wiring.
inate when load
bank is in opera-
tion.
(b) Using an ohmmeter or similar de-
(2) Cleaning and Inspection.
vice, check for continuity using figure 4-13 as a
guide.
(a) Clean voltage selector connectors with
filtered compressed air and a soft bristle brush or
(c) Replace switch if it fails to meet
wipe with a clean, lint-free cloth lightly moistened
continuity requirements.
with an approved solvent.
(4) Installation. Install load selector switch
(b) Visually inspect connectors for cracks,
in reverse order of removal procedures.
corrosion, stripped or damaged threads and other
damage.
d.
Circuit Breaker.
(3) Installation. Install voltage selector con-
(1) Removal.
nectors in reverse order of removal procedures.
(a) Remove control box cover as outlined
c.
Load Selector Switch.
ih subparagraph c.(1)(a) above.
(1) Removal.
(b) Tag and disconnect electrical leads
to circuit breaker.
(a) Remove screws (6, figure 4-12) and
lockwashers (7) and pull control box cover (8) away
(c) Remove screws (14, figure 4-12) to
from load bank.
remove cover (15) and circuit breaker (16).
(b) Tag and disconnect electrical leads to
(2) Cleaning and Inspection.
load selector switch.
(c) Remove setscrew (9) and control knob
(a) Clean circuit breakers with filtered
(10).
compressed air and a soft bristle brush or wipe with
a clean, lint-free cloth lightly moistened with an
(d) Remove screws (11) to remove load
approved solvent.
selector plate (12) and switch (13).
(b) Visually inspect circuit breakers for
(2) Cleaning and Inspection.
cracks, corrosion, stripped, or damaged threads and
evidence of shorting or other damage.
(a) Clean switch with filtered compressed
air and a soft bristle brush or wipe with a clean,
(3) Testing.
lint-free cloth lightly moistened with an approved
solvent.
(a) Place circuit breaker in OPEN posi-
tion.
(b) Visually inspect switch for cracks,
corrosion, stripped, or damaged threads and other
(b) Using an ohmmeter or similiar de-
damage.
vice, check for open circuit between terminals
using figure 4-13 as a guide.
(3) Testing.
(c) Place circuit breaker in CLOSED
(a) Rotate switch to the OFF position.
position and check for continuity between terminals.
