PRO WELD INTERNATIONAL AG-900, Operation & Maintenance Manual

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AG-900
PRO WELD
When it does become necessary to adjust the lift,
you do so by removing the rear cap from the gun.
This will expose the rear coil choke assembly, the
set screw, and the lift adjusting screw (Refer to
Figure 6-2).
Loosen the set screw.
To increase lift: turn the adjusting screw out
(counter clockwise).
To decrease lift: turn the lift adjusting screw in
(clockwise).
Once the lift has been set, tighten the set screw and
replace the rear cap.
Figure 6-2 LIFT ADJUSTMENT
RECOMMENDED LIFT SETTINGS
Stud Base Dia. Lift Setting
Less than 1/2” 3/32”
1/2” through 3/4” 3/32”
Greater than 3/4” 3/32-1/8”
5. Adjustment of Free Travel
With the free travel adjustment sleeve screwed fully in,
(clockwise) there is no free travel when the plunge
length plus the lift height adds up to be less than 7/16
inch (the maximum stroke of the damper). To increase
the free travel, back out (counterclockwise) the free
travel adjustment sleeve (refer to figure 6-3).
Each full turn provides .062 inch of additional free
travel.
The following recommendations are for normal stud
welding applications.
For studs with a weld base of 1/2 inch dia. Or under back
out the free travel adjustment sleeve 2 turns.
For studs with a weld base of 5/8 to 3/4 inch dia. Back
out the free travel adjustment sleeve 2-3 turns
Larger diameter studs require increased free travel to
prevent excessive weld fillet spatter.
Figure 6-3
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