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TSUM - 3-022 PLC Startup Conditions
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TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
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TSUM - 3-024 Power Failure Part 1
TM 5-5420-279-23
TSUM - 3-023 Emergency Stop Failure
Em ergency Stop
will not reset
Is
No
CB3 set in
Set CB3 breaker
Operator Interface
Cabinet?
Yes
Is
No
Connect Tail
Tail Lift Pendant
Lift Pendant
connected?
Yes
Reset E-Stop buttons
Are all
No
(twist and pull)
E-Stop buttons in
& depress E-STOP RESET
the out position?
button
Yes
W ARNING
PERSONAL INJURY OR
DEATH. IT IS POTENTIALLY
VERY DANGEROUS TO
Operate
Dam aged Safety Relay -
OPERATE THE E-STOP
No
E-Stop override.
Reset E-STOP
replace E-Stop relay.
OVERRIDE. DOING SO W ILL
Note: W ARNING
override
See m aintenance procedure
DEFEAT ALL E-STOP
Is hydraulic power
5-099
FUNCTIONALITY.
restored?
IT IS ONLY TO BE USED AS
A TEMPORARY MEASURE
TO ASSESS THE LEVEL OF
Yes
DAM AGE TO THE SYSTEM .
Reset E-STOP
override
Check
Replace harness
Yes
all harnesses -
or associated com ponent.
is there any visible
See maintenance procedure
NOTE
dam age?
5-139
Remem ber that
connection of the Chest
No
Pack introduces more
E-Stop circuitry.
Are
No
Secure loose connections
all connectors securely
fastened?
Yes
Carry out
continuity checks
Internal fault in
on both E-Stop channels
Safety Relay - replace
for short or open circuits, or
Yes
No
Replace appropriate harness
E-Stop relay.
crossed conductors. Are there any
or junction box
See m aintenance
anomalies? See W iring Diagram
procedure 5-099
G406-8604 Sheet 11 at

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