wooden mallet or soft-faced hammer, using a lead or wooden
the door panel (4) and door knob (3) with a soft cloth; dry the
block for support. Remove all signs of peeling and scaling
hinges (2). Inspect the parts thoroughly for damages showing
around the repaired area, and refinish with the proper finishing
cracks, bends or dents, and breaks. Observe the door panel (4)
lacquer. Replace parts showing holes, cracks, and openings in
for crinkling or scaling in finish. Straighten and level dented or
the surface.
bent surfaces of door with a wooden mallet or a soft faced
hammer, using a lead or wooden block for support. Scrape off
any loose paint and refinish with the proper finishing lacquer.
e. Reassembly.
Replace defective door knob (3) and hinges (2).
(1) Position the latches (11, fig. 4-7) on the reflector
d. Installation.
door (12) and attach with two screws and nuts.
(2} Install the reflector doors (12) on the reflector
(1)
Attach the ash door hinges (2) to the door panel
with hinge screws (21, fig. 4-6).
with screws.
(3) Install the center support plate (7, fig. 4-7) with
(2) Secure the door knob (3) by inserting it into the
four screws (6).
threaded hole of the door panel (4).
(3)
Attach the door to the bottom casting with
f. Installation.
screws (1).
(1) Position the arc lamp reflector (3, fig. 4-6) on
the side panels (1) and install with eight screws (1, fig. 4-7).
(2)
Install the carbon electrodes (para. 4-27. c.).
(3)
Adjust the carbon electrodes (para. 427. d.).
4-29. Arc Lamp Ash Door
a. Description. The ash door is located on the bottom
casting (19, fig. 4-6) of the arc lamp and is used to clean out
fallen carbon ash aid stubs from the lower chamber of the
fixture. The ash door (fig. 4-9) is spring-loaded operating from
two spring type hinges (2) which are directly fastened to the
bottom casting.
b. Removal.
(1) Remove two screws (11 on the ash door hinge
(2) to release it from the bottom casting (5). Release the other
hinge (2, fig. 4-9) in a similar manner and remove the ash door
from the arc: lam p.
1.
Screw, 8-32 x h
(2) Detach the ash door hinges from the door by
2.
Ash door hinge
removing two screws on each hinge.
3.
Ash door knob
(3) Unscrew the ash door knob (3) to release it from
4.
Ash door panel
the door panel (4).
5.
Bottom casting
Figure 4-9. Bottom view of arc lamp showing ash
c. Cleaning, Inspection and Repair. Clean the ash door
door.
panel (4) with a cleaning solvent and a clean, soft cloth. Wash
the ash door hinges (2) and the ash door knob (3) with cleaning
solvent. Wipe
4-13
