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CHAPTER IV
OPERATING PROCEDURES
4-1 GENERAL.
The following procedures provide the necessary information for lamp ignition, opera-
tion and turn-off of the 500 Watt Searchlight.
4-2
LAMP IGNITION.
Perform the following procedure in the sequence written:
(1) Close the disconnect switch located near the ship’s Power Supply to apply power to the
searchlight Power Supply.
(2) Place the Power Supply circuit breaker switch A1CB1 to ON position.
NOTE
As the lamp accrues hours, it may take a few seconds longer to start in the ON or IGNITE
position. The IGNITE position on the remote control panel STANDBY/ON/IGNITE switch
A3S1 can be held for longer periods of time. However, once the lamp ignites,
release the switch immediately.
(3) Position remote control panel STANDBY/ON/IGNITE switch A3S1 to ON. The xenon lamp
should light within one to two seconds. If lamp does not ignite in ON position, set remote con-
trol panel STANDBY/ON/IGNITE switch A3S1 to IGNITE position. Release switch A3S1 when
lamp lights and switch will return to ON position. If lamp does not light in IGNITE position, try
again. If lamp does not ignite after several attempts, refer to service technician.
(4) Check remote ammeter A4 when xenon lamp ignites A2DS1. The initial current indication may
surge above 25 amperes, but after 5 minutes it should stabilize to 20-25 amperes range.
4-3
MAIN OPERATION.
(1) Position BEAM switch A3S2 up or down to adjust beam width. Release BEAM switch when
desired beam width is obtained.
NOTE
The BEAM switch A3S2 adjusts the lamp focus. If the BEAM switch is held up or down,
beam width will cycle from narrow to wide and wide to narrow.
(2) Rotate the lever gear control handle in a horizontal plane around the center shaft to rotate the
searchlight in azimuth.
(3) To change searchlight head elevation, twist lever gear handle in a CW or CCW direction.
4-4
TURN-OFF.
Turn-off is accomplished by setting the remote control panel STANDBY/ON/IGNITE
switch A3S1 to the STANDBY position. The blower fans will continue to operate to prevent overheating of
the blower fan motor and xenon lamp. Wait at least 15 minutes before positioning circuit breaker A1CB1 or
ship’s power to OFF.
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