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OPERATING INSTRUCTIONS
NOTE: For additional references to the parts listed below, refer to the Assembly
Diagram on page 13 of this manual.
To Adjust The Tong And Operating Lever Pressure:
1. Caution: Prior to adjusting the Tongs (parts #46, #47) and Operating Lever (part
#5) pressure, make sure the Spot Welder is disconnected from its electrical supply
source.
2. NOTE: Excessive Tong (parts #46, #47) can damage the Tong Tips (part #48).
Do not use the Tongs as a clamp or vice to hold the workpieces together. If the
workpieces to be welded do not make good contact at the point of the intended
weld, clamp the workpieces together to provide good contact between the surfaces.
(See Figures A, and Assy. Diagram.)
3. The Tongs (parts #46, #47) pressure is adjustable, and should be checked and/or
set before operation. Correct Tong pressure is necessary to create a proper weld
and to prevent damage to the Tong Tips (part #48). (See Figures A, F, and Assy.
Diagram.)
4. If the Tongs (parts #46, #47) pressure is too weak, and the workpieces are loose
when the Tongs close severe arcing will occur between the workpieces and no weld
can be made. To increase the Tong pressure, loosen the front Hex Jam Nut (part
#10). The more the front Hex Jam Nut is loosened, the greater the pressure on the
Tong Tips (part #48) when the Operating Lever (part #5) is closed. Next, turn the
rear Hex Jam Nut toward the Top Tong Clamp (part #13) to lock the desired pressure
in position. (See Figures A, F, and Assy. Diagram.)
5. If the Tongs (parts #46, #47) pressure is too strong, the weld nugget will dimple,
and material will splash out around the nugget area. To decrease the Tong
pressure, loosen the rear Hex Jam Nut (part #10) and turn the front Hex Jam Nut
(part #10) toward the Top Tong Clamp (part #13) to lock the desired pressure in
position. (See Figures A, F, and Assy. Diagram.)
6. The farther down the Cap Screw (part #3) is turned, the farther down the Operating
Lever (part #5) will close. Adjusting the Cap Screw will determine if the Tongs (parts
#46, #47) lock on the material, or just pull up tight. Adjust the Cap Screw to allow
the Operating Lever to be raised easily after the weld has been completed. (See
Figures A, F, and Assy. Diagram.)
7. To adjust the pressure required to push down the Operating Lever (part #5), turn the
Hex Nut (part #20) located on each side of the Front Housing (part #28) clockwise
or counterclockwise. (See Figures A, F, and Assy. Diagram.)
SKU 45690 PAGE 8