switch, removal and installation.
ture in the welding machine transformer windings
and opens the circuit to the contactor when heat be-
CONTACTOR Switch, and SOFT START
comes excessive. The thermostat is placed between
Switch
the windings of transformer T1. Proceed as follows
a. Removal. Proceed as follows to remove these
to remove the thermostat.
front panel switches.
(1) Disconnect ac power from the welding ma-
(1) Disconnect ac power from the welding ma-
chine.
chine.
(2) Remove the top and the housing from the
(2) Remove the timer and high frequency drawer
welding machine (para 3-20).
(3) Refer to figure 3-12 and remove the thermo-
(3) Refer to figure 3-11 and remove the switch.
static switch, being careful not to damage the trans-
b. Installation.
former windings.
(1) Refer to figure 3-11 and install the switch.
b. Installation.
(2) Install the timer and high frequency drawer
static switch.
(2) Install the top and housing (para 3-20).
a. Removal. The thermostat responds to tempera-
