EQUIPMENT DESCRIPTION (Contd)
PALLET EQUIPMENT FEATURES (Contd)
ELECTRICAL SYSTEM The SPS control unit, RCU, control valve solenoids, limit switches, power
cable, wiring harnesses, battery, 27A generator, and PU starter motor and control box of PU.
LPU CONTROL BOX The control box, mounted adjacent to LPU, that contains an ignition
switch, glow plug indicator, engine oil pressure light, and battery light.
RCU STOWAGE BOX There is a metal stowage box, mounted on pallet frame adjacent to LPU,
that contains RCU, RCU power cable, and RCU power receptacle. In addition, there is an emergency
stop button on front of box door.
POTENTIOMETER A variable resistor located on main shaft manifold cover that measures
position of launch boom electronically.
ELECTRICAL SYSTEM BOX There is a metal stowage box, mounted on pallet frame adjacent to
hydraulic reservoir, that contains two expansion modules, circuit blocks, a circuit breaker, 3 winch
relays, 38 bulkheads, and RCU power receptacle. In addition, there is an emergency stop button on
front of box door.
CONTROL VALVE SOLENOIDS The electric solenoid, mounted on each hydraulic control valve,
that functions to actuate the control valve by means of RCU, SPS control unit, and limit switches.
MAIN POWER SWITCH AND NATO SLAVE RECEPTACLE The main power switch is a key
operated two-position switch used to send 24V from pallet batteries or an external 24V power source
to the pallet electrical system. When operating from an external 24V power source, a standard NATO
slave receptacle is provided adjacent to the main power switch.
BATTERY BOX The stowage box that holds two batteries located at center of pallet frame
adjacent to A-frame.
REMOTE CONTROL UNIT The hand-held control unit from which all pallet launch and
retrieval functions are initiated. RCU power cable can be connected to receptacles on either side of
pallet. In addition, there is an emergency stop button on the control panel of the RCU.