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Page Title:
Table 5-1. Direct Support Troubleshooting |
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 TM5-6625-2694-13&P
Direct
Support
Troubleshooting
5-1.
MALFUNCTION
TEST
OR
INSPECTION
CORRECTIVE
ACTION
1.
FANS
DO
NOT RUN.
No
power
applied
to
Test
Set.
Step
1.
a.
Check
for
power
applied
to
Test
Set.
Voltage at
load
terminals
L1,
L2,
L3
to
LO
should
equal voltage
at
terminals
L1,
L2,
L3
to
LO.
b.
If
voltage
is
incorrect
check
and
connections
Step
2.
Circuit
Breaker
CB1
turned
off
or
faulty.
Turn
Circuit
Breaker
on.
a.
b.
Measure voltage from input terminals of CB1 to
Measure
voltage
from
output
terminals
of
CB1
to
LO.
Voltage
measurements
should
be
equal.
LO.
to
and
replace
Circuit
Refer
Breaker if voltage measurements are NOT equal.
Voltage
Selector
Plug
in
improper
position.
Step
3.
Refer to paragraph
for
proper
voltage
selector
plug
positioning.
Voltage
Sensor
A1
defective.
Step
4.
sensor
for
proper
input
voltage
a.
Ch
eck
voltage
If
voltage
is 150
terminal
2.
across
terminal 1 to
across
terminal
3
(-)
to
VAC
o
r
higher,
voltage
termina
l 4 (+) should be 28 VDC.
5-18
and
replace
voltage
to
paragraph
b.
Refer
terminal 2 is
sensor
if
voltage
across
terminal
1
and
terminal 3 and
150 VAC or
voltage across
higher and
terminal 4 is 0 VDC.
5-3
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