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TM-55-1905-223-10 Landing Craft Utility (LCU 200 Class) NSN 1905-01-154-1191 Manual

FIGURE 2-199. 500 Watt XENON Searchlight.

TM 55-1905-223-10

CAUTION

Operation of lamp with finger marks or grease on the surface will cause

deterioration of the quartz arc tube.

a. Lighting Lamp (FIGURE 2-199).

(1) Remove protective cover from lamp.

(2) In Pilothouse on EL-102 panel, set 500W XENON SCHLT (PORT) and 500 XENON SCHLT (STBD)

circuit breakers 4 and 5 to ON position.

(3) In Pilothouse, turn ON-OFF-RESET switch (3, FIGURE 2-199) counterclockwise to ON position.

(4) Set STANDBY-OFF switch (6) to STANDBY position.

(5) Turn searchlight OFF-START switch (5) clockwise to START position; hold until lamp lights.

NOTE

Do not hold switch in start position any longer than necessary to start lamp.

b. Directing Beam

(1) Twist to left HORIZONTAL LOCK (9).

(2) Point LEVER HANDLE (8) in desired direction.

(3) Twist to right HORIZONTAL LOCK (9) to lock horizontal position.

(4) Twist to left VERTICAL LOCK KNOB (7) to unlock vertical position.

(5) Twist LEVER HANDLE (8) to the right for beam to go up, to the left for beam to go down.

(6) Twist to the right VERTICAL LOCK KNOB (7) to lock vertical position.

NOTE

If searchlight is to be moved constantly do not lock the horizontal or vertical locks.

c. Focusing Beam in Pilothous.e

(1) On top of searchlight drum, ensure LOCK KNOB (2) on the MANUAL FOCUS KNOB (1) is unlocked.

(2) In Pilothouse on BEAM FOCUS switch (4), adjust BEAM FOCUS switch (4) to BEAM or FOCUS

position to adjust diameter of beam and intensity.

(3) Release BEAM FOCUS switch (4).

2-542