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Section V. CONTROL PANEL AND TIMER RECEPTACLES
Figure 4-4. Range switch, polarity switch, and control rheostat, removal and installation.

Gas Welding Machine, 300 Amp, 10 To 400 Amp, Ac, Str Polarity, 10 To 300 Amp Dc, Reverse Polarity
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TM 5-3431-203-15
Figure 4-3. Timer receptacles, removal and
installation.
(2) Refer to figure 4-3 and remove the
timer receptacles
b. Installation.
(1) Refer to figure 4-3 and install the
timer receptacles.
(2) Install the high frequency panel as-
sembly (para 3-27).
Figure 4-2. Control panel, removal and installation.
Section VI. RANGE SWITCH, POLARITY SWITCH, CONTROL
RHEOSTAT, AND INTENSITY SELECTOR
(4) Refer to figure 4-4 and remove the
4-18. Range Switch
range switch.
a. Removal.
b. Installation.
(1) Refer to figure 4-4 and install the
(1) Remove the welding machine top
and housing (para 3-26).
range switch.
(2) Secure the control panel to the frame
(2) Remove the high frequency panel as-
(para 4-16).
sembly ( para 3-27).
(3) Install the high frequency panel as-
(3) L o o s e n control panel from frame
sembly (para 3-27).
(para 4-16).
4-4


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