Model 7250 Power Pinner Bench Hand Welder
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SETUP and OPERATION
1. Attach the spring loaded ground clamp to the work ta le or directly to the duct. Insure the
connection is clean and free of foreign material or weld quality will e compromised.
2. Plug the welder into a proper electrical outlet and adjust the “Weld Time”. (Shorter pins
and thin gauge require a lower setting than long pins and thicker gauge.)
3. Use duct liner and a piece of scrap metal of the same gage for the following test.
4. Place a weld pin on the gun’s magnetic weld tip.
5. Press the pin into the liner, making contact with the metal using a twisting motion, then
apply moderate pressure prior to activating and throughout the weld cycle.
6. Pull and hold the trigger to start and continue the weld cycle. The green “WELD ON”
light will turn ON during the weld cycle and will automatically go OFF.
7. Release the trigger, lift the gun from the metal, then repeat the process with a new pin.
8. Test weld several pins in this manner and adjust the “Weld Time” to the lowest setting
required to give good weld results.
MAINTENANCE
The Model 7250 Power Pinner Bench Hand Welder requires very little maintenance due to
it’s solid state circuitry and design. We do, however, recommend the following procedures
periodically.
CAUTION: Turn welder OFF and disconnec from elec rical supply before
any main enance or service is performed.
1. Remove all accumulated insulation dust and foreign de ris from inside the welder.
2. Tighten all mounting hardware on solid state circuit components, transformers, ca le con-
nections to weld transformer, ground clamp, weld gun and control ca le.
3. Using a steel wire rush, clean the contact surfaces of the spring loaded ground clamp.
4. Clean and inspect the magnetic weld tip. Replace if adly urned, deeply pitted or if the
magnetism is too weak to properly hold a weld pin.
Carefully inspect and tighten all ca le strain reliefs.
