TM 55-1930-209-14&P-13
I.
Check continuity of the switch wires listed below. If continuity check indicates an open circuit, replace bad wire.
If continuity check indicates all closed circuits, go to step m.
Wire connections
Switch
Switch point
To point
START
G1
Main contactor V2
G1
Remote station 1 START F1
G1
Remote station 2 START H1
G2
Main contactor V1
G2
Remote station 2 START H2
G2
AUTO/OFF/HAND J1
Remote station 1
START F2
Main contactor V1
STOP El
Remote station 2 STOP 12
STOP E2
Disconnect switch A2
Remote station 2
START H1
Remote station 2 STOP 11
AUTO/OFF/HAND
J2
Main contactor U1
m.
If no faults were found in steps e thru I and output voltage in step e was not 440 Vac, replace main contactor.
n.
With power on and pump operating but bow crane not operating properly, test anti-2-block control panel (station)
as given in paragraph 3-19.2.2.2.2.
3-19.2.2.4.3 Replacement
a.
Removal.
WARNING
Make sure hydraulic power unit motor controller is electrically dead before replacing
motor controller by opening (OFF) circuit breaker P16 on switchboard. Redtag circuit
breaker with: "WARNING - DO NOT ACTIVATE. REPAIRS BEING MADE."
(1)
Tag and disconnect wiring with connection information.
(2)
Remove attaching hardware and remove motor controller.
b.
Installation.
(1)
Install motor controller using attaching hardware.
(2)
Connect wiring.
(3)
Close (ON) circuit breaker P16 on switchboard.
(4)
Check operationally that motor controller operates normally.
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