Tweco VA 2000 Ultra-Feed - Manual (Page 27)

ULTRAFEED VA 2000
February 27, 2006 4-1
SECTION 4:
OPERATION
4.01 Prewelding Procedure
Follow all installation instructions for the wire feeder, the
welding power source, and the welding gun before
attempting to operate the Ultrafeed VA 2000.
1. Make sure all necessary connections have been
made (Refer to “Connections” in the Installation
chapter of this manual).
2. Turn ON the power source and the wire feeder.
3. Push the PURGE switch of the feeder and adjust
the flow of shielding gas.
4. Push the INCH switch of the feeder and adjust
the wire feed speed to the desired value by means
of the wire feed speed control.
!
WARNING
If the gun switch is depressed, the electrode
(welding wire) is electrically “hot”. Do not
permit it to touch any metal or a welding arc
may be established which may be injurious to
someone’s eyes (flash) or skin (burn).
5. Adjust the voltage of the power source to the
desired value. The gun switch must be triggered
to close power source contactor.
WARNING
In semiautomatic or automatic wire welding,
the welding wire, wire reel (if used), input
guide, feed rolls, output guide, feedhead, and
welding gun metal parts are all ELECTRICALLY
“HOT”.