NS-40 Manual
Page 3
729-110-036
Revision 1.14
August 2013
LIFT AND LIFT ADJUSTMENTS
To Adjust Lift:
Remove rear cap on gun, adjust the slotted adjustable
core screw as required (See Figure 3). Each "click"
changes lift by .010".
To increase lift
, turn adjustable core counter-
clockwise.
To decrease lift
, turn adjustable core clockwise.
After proper lift is obtained, replace rear cap on gun.
Recommended Lift Settings for Steel Studs
1/16” ................... For welding ½
"
diameter studs or less
3/32” .................................................... For welding 5/8”.
Recommended Lift Settings for Aluminum Studs
3/32” .................. For welding ½” diameter studs or less.
Electric Arc
The circuitry used in the Nelson Units/Systems permits
checking lift (the amount of movement or "lift" of the
gun mechanism during the welding cycle) without the
gun being grounded. Compressing the gun is
recommended since triggering in the open air will give
more retract than in the compressed condition. The
welding condition should be duplicated when adjusting
the “lift”. To check lift, the gun spring must be
compressed so that the lift mechanism will operate in
the same position as when welding. To do this:
1.
Load a stud and ferrule into the gun.
2.
Press the gun against and insulated or
ungrounded block.
3.
Trigger the gun to start a simulated weld cycle.
This will allow the actual functional lift to be
measured and adjusted as needed.
Note:
For Nelson Nelweld power sources, refer to the
Nelweld Operations and Service Manual
for
instructions on initiating the lift check mode of
operation.
Figure 3
