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AUTOPRO 90S
OPERATION
Read and understand this entire section before operating
your machine.
Safety Precautions
Do not attempt to use this equipment until you have
thoroughly read all operating and maintenance manuals
supplied with your equipment and any related welding
machine it will be used with. They include important safety
precautions, operating and maintenance instructions and
WARNING
parts lists.
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such as
output terminals or internal wiring.
• Insulate yourself from the work and
ground.
• Always wear dry insulating gloves.
WELDING SPARKS can cause fire
or explosion.
• Keep flammable material away.
• Do not weld upon containers which have
held combustibles.
ARC RAYS can burn.
• Wear eye, ear and body protection.
FUMES AND GASES can
be dangerous.
Although the removal of the particulate
matter from welding smoke may reduce
the ventilation requirement, concentrations
of the clear exhausted fumes and gases
may still be hazardous to health. Avoid breathing concen-
trations of these fumes and gases. Use adequate
ventilation when welding. See ANSI Z49.1, "Safety in
Welding and Cutting", published by the American Welding
Society.
Only qualified personnel should operate this equipment.
Observe all safety information throughout this manual.
GENERAL dESCRIPTION
The AUTOPRO™ 90S is a 90 amp arc welding power source
which utilizes single phase input power to produce constant
current output. The welding response of this Inverter has been
optimized for stick (SMAW) welding.
WELdING CAPABILITY
The AUTOPRO™ 90S is rated at 70 amps, 22.8 volts, at 20% duty
cycle on a ten minute basis. It is capable of higher duty cycles at
lower output currents. If the duty cycle is exceeded, a thermal
protector will shut off the output until the machine cools. See
Table A.1 in the Installation Section for other rated outputs.
The AUTOPRO™ 90S is recommended for the following Electrode
TAble A.2
Types and Diameters:
Types
FLEETWELD 37
(E6013)
FLEETWELD 35
(E6011)
EXCALIBUR 7018 MR
(E7018)
Amp Branch circuit or greater required.
∆ - 20 Amp Branch circuit or greater required.
LIMITATIONS
The AUTOPRO™ 90S is not recommended for pipe thawing.
B-1
OPERATION
SIZES (IN.)
1/16 5/64 3/32
1/8
∆
X
X
-
∆
-
-
X
∆
-
-
-
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