TM 55-1930-209-14&P-13
NOTE
Remote station 1 START/STOP switch is located on the weatherdeck forward bulkhead.
Remote station 2 START/STOP switch is located in the watertight storage box aft of the
bow crane control levers on the deckhouse top forward.
3-19.2.2.3.1 Cleaning and inspection
a.
Make sure remote station 1 or 2 START/STOP switch is electrically dead by opening (OFF) switchboard circuit
breaker P16 for crane hydraulic unit. Redtag circuit breaker with: "WARNING DO NOT ACTIVATE. BEING
MADE."
b.
Wipe clean exterior of remote station 1 START/STOP switch with clean rag. Open remote station 2 door and
vacuum clean or clean inside with electrician's brush. Avoid using solvents for cleaning inside control station.
Solvents leave a greasy film that may reduce electrical conductivity of components.
c.
Visually check for indications of burns, loose connections, or damage. Clean corrosion from terminals, tighten
loose connections, and replace switch if damaged.
3-19.2.2.3.2 Test and repair
a.
Control station I START/STOP switch.
(1)
With switchboard circuit breaker P16 closed (ON) and AUTO/OFF/HAND in HAND position, check input
voltage to START/STOP switch. If input voltage is not 440 Vac, go to step (2). If input voltage is 440 Vac,
go to step (3).
(2)
Open (OFF) and redtag switchboard circuit breaker P16 and position AUTO/OFF/HAND switch to
OFF.Check continuity of input wires to START/STOP switch. If check indicates open circuit, replace bad
wires. If check indicates closed circuit, check hydraulic power unit motor controller.
(3)
Open (OFF) and redtag switchboard circuit breaker P16 and position AUTO/OFF/HAND switch to OFF and
check continuity as follows:
(a) Depress START button and check continuity across points Fl to F2. If check indicates closed circuit,
go to step (b). If check indicates open circuit, replace START/STOP switch.
(b) Depress STOP button and check continuity across points E1 to E2. If check indicates closed circuit,
START/STOP switch is good. If check indicates open circuit, replace START/STOP switch.
b.
Control station 2 START/STOP switch.
(1)
Perform steps a.(1) and a.(2).
(2)
Open (OFF) and redtag switchboard circuit breaker P16 and position AUTO/OFF/HAND switch to OFF and
check continuity as follows:
(a) Open storage box on top of deckhouse, remove START/STOP switch cover, depress START button,
and check continuity across points H 1 to H2. If check indicates closed circuit, go to step (b). If
check indicates open circuit, replace START/STOP switch.
(b) Depress STOP button and check continuity across points 11 and 12. If check indicates closed
circuit, START/STOP switch is good. If check indicates open circuit replace START/STOP switch.
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