SECTION 4: OPERATION
AIR N ARC
®
150 SERIES
PAGE - 20
090051-OP_r0 (FEB-2014)
Vanair Manufacturing, Inc.
vanair.com • 800-526-8817
4.4 OPERATING THE WELDER
The amperage and power controls are built
into the welding lead. The Air N Arc welding
lead is equipped with remote welding
controls for maximum operator efficiency.
There are three controls on the hand-grip of
the welding lead:
1. The Power Button: When power is
desired at the welding lead, the
Power Button must be pressed and
held for the duration of the weld.
2. The Boost Button: When the Boost
Button is pressed and held, full
amperage is sent to the welding
lead regardless of the Power Dial
setting. When the button is
released, amperage will return to
the preset power level.
3. The Power Dial: The infinitely
variable Power Dial adjusts the
welder amperage from 40 - 190
amps. Turning the Power Dial
clockwise increases the amperage
and turning the Power Dial
counterclockwise decreases the
amperage. The Power Dial may be
adjusted while welding.
OPERATING PROCEDURE
1. With the engine shut off, insert the
large plug on the welding lead into
the welding lead receptacle.
2. Insert the small 6-pin plug on the
welding lead into the 6-pin
receptacle referencing the pin
spacing to properly orientate the
plug.
WARNING
Before attempting any welding
procedure, the operator must be aware
of general safety practices, and
particularly those pertaining to welding,
as found in
Section 1.4
of this manual.
KEY
DESCRIPTION
A
1
PILOT VALVE SWITCH ‘ON’ POSITION
A
2
PILOT VALVE SWITCH ‘OFF’ POSITION
B
CUT-IN/CUT-OUT PRESSURE ADJUST-
MENT SCREW
C
LOCKNUT
D
PRESSURE DIFFERENTIAL NUT
E
VALVE BODY
Figure 4-3: Pilot Valve
A
1
A
2
C
D
E
B
TABLE 4B: ELECTRODE SPECIFICATIONS
METAL THICKNESS
ELECTRODE SIZE
WELDING AMPERES
1/16-1/8
3/32
50-90
1/8-1/4
1/8
90-140
1/4-3/8
5/32
120-180
3/8-1/2
3/16
150-230
