TM 5-3431-203-15
Section Vlll. PILOT LIGHTS, SWITCHES, TIMERS, REMOTE
RECEPTACLES, AND DUMMY PLUG
b. Installation.
3-29. General
( 1 ) R e f e r to figure 3-8 and, install the
The pilot lights indicate the phase of oper-
pilot lights.
a t i o n that the machine is performing.
The
( 2 ) Install the high frequency panel as-
s w i t c h e s control the power, gas, water, and
sembly (para 3-27).
high frequency. The timers have plug-in type
( 3 ) I n s t a l l the pilot lamps (para 3-10).
s o c k e t s for easy r e m o v a l and maintenance;
t h e y control the postflow of gas and water,
331. Power Switch
the preflow of gas and water, shut off high
a. Removal.
frequency oscillation at a predetermined time,
(1) Remove the high frequency panel
as-
a n d control the length of time the welding
sembly (para 3-27).
power is on. The dummy plugs are used when
( 2 ) Refer to figure 3-8 and remove
the
timers are not in the socket.
power switch.
b. Installation.
330. Pilot Lights
(1) Refer to figure 3 - 8 and install
the
a. Removal.
power switch.
(2) Install the high f r e q u e n c y panel
as-
( 1 ) Remove the pilot lamps (para 3-10).
sembly (para 3-27).
( 2 ) Remove the high frequency panel as-
sembly (para 3-27).
332. Gas-Water Switch
( 3 ) R e f e r to figure 3-8 and remove the
a. Removal.
pilot lights.
(1) Remove the high frequency panel
assembly (para 3-27).
( 2 ) Refer to figure 3-8 and remove the
gas-water switch.
b. Installation.
(1) Refer to figure 3-8 and install the
gas-water switch.
(2) Install the high frequency panel as-
sembly (para 3-27).
333. High Frequency Switch
a. Removal.
(1) Remove the high frequency panel
as-
sembly (para 3-27).
( 2 ) Refer to figure 3-8 and remove
the
high frequency switch.
b. Installation.
(1) Refer to figure 3-8 and install
the
high frequency switch.
(2) Install the high frequency panel
as-
sembly (para 3-27).
334. Timers
a. Removal.
(1) Unlock and lower the high fre-
quency panel door.
( 2 ) Refer to figure 3-9 and remove the
Figure 3-8. Pilot lights and gas, water, power, and
timers.
high frequency switches, removal and installation.