AIR N ARC
®
150 SERIES
SECTION 4: OPERATION
090043-OP_r0 (MARCH - 2015)
PAGE - 21
VANAIR MANUFACTURING, INC.
(800) 526-8817 • www.vanair.com
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
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.
3. Select the appropriate electrode for
the material and process being
performed. See
Table 4B
for
selecting an electrode.
4. Place the ground clamp on the work
piece and insert the appropriate
welding rod into the electrode
clamp.
5. Start the engine (See
Section 4.2,
Engine Startup and Shutdown
Procedure
).
6. Place the Welder switch on the
control panel to the On position.
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 ADJUSTMENT
SCREW
C
LOCKNUT
D
PRESSURE DIFFERENTIAL NUT
E
VALVE BODY
Figure 4-4: Pilot Valve
A
1
A
2
C
D
E
B
NOTE
If a longer welding lead is desired,
optional 50 ft. lead segments may be
purchased from Vanair for a maximum
lead length of 100 ft.
