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THEORY OF OPERATION
E-7 E-7
COMPACT WIRE WELDERS
THERMAL PROTECTION
The Compact Wire Welders have a rated output duty
cycle as defined in the Technical Specification page. If
the duty cycle is exceeded, a thermal protector will shut
off the output until the machine cools to a reasonable
operating temperature. This is an automatic function of
and does not require user intervention. The fan contin-
ues to run during cooling. If the fan is not turning or the
air intake louvers become obstructed, the input power
must then be removed and the fan problem or air
obstruction corrected.
OUTPUT OVERLOAD
The Compact Wire Welders are equipped with a circuit
breaker which protects the machine from damage if
maximum output is exceeded. The circuit breaker must
be manually reset.
ELECTRONIC WIRE DRIVE MOTOR PROTECTION
The Compact Wire Welders built-in protection for wire
drive motor overload.
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