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Operation of this welder consists of
selecting and adjusting operating
controls for optimum voltage (welding
heat) and wire speed settings
CONTROLS AND
INDICATORS
WARNING
Electric shock can kill! To remove
the risk of electric shock, be aware
that the VOLTAGE selector, when
OFF, does not remove power from all
internal circuitry in the welder.
Whenever the VOLTAGE selector is
in any position except OFF, the
welding circuit is activated, Under
this condition, an arc will occur if the
welding wire or any part of the
welding circuit comes in contact with
welding ground.
VOLTAGE SELECTOR - The voltage
selector controls the welding heat The
voltage selector is numbered 1-4
Number 1 is the lowest heat and
number 4 the highest., Refer to the label
under the welder hood for
recommended heat settings for your
welding job,
Position 4 on the Voltage Selector
produces the rated output of 90 amps,
The duty cycle at 90 amps is 20%, but
will increase as the heat setting is
decreased.
The position to the left of number t is
the OFF position. In this position, no
power is provided to the welder - the
drive motor and welding power are
turned off.. However, as long as the
voltage selector is in one of the four
numbered voltage positions, welding
circuit is HOT (there is voltage on the
contact tip).
WIRE SPEED CONTROL - The WIRE
SPEED CONTROL adjusts the speed at
which the wire is fed out of the welding
gun The wire speed needs to be
closely matched (tuned-in) to the rate at
wtlich it is being melted off (see
TUNING IN THE WIRE SPEED, in the
WELDING INSTRUCTION GUIDE).
Some things that affect wire speed
selection are the type and diameter of
the wire being used, the heat setting
selected, and the welding position to be
used
NOTE: The wire will feed faster without
an arc. When an arc is being
drawn, the wire speed will slow
down_
16
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