ENGINEERING ADJUSTMENT SUMMARY
MODEL DBW - 15
WELD UPSET FORCE:
The upset force shall be from 10 to 12 lbs. when measured
at the movable jaw with the upset force selector set for the
narrowest width band. The approximate locations of the
upset force adjustment screw (item 6, fig. 4) is with the
back end of the screw flush with the cost jaw surface. The
final adjustment is made in the following manner:
Disconnect the weld lever return spring (item 6, fig. 4).
Disconnect the jaw upset spring.
Bend the transformer lead that attaches to the movable jaw so that
when it is connected it will just urge the jaw to its fina1 jaw gap
Reconnect the jaw upset spring.
Attach a spring scale to the movable jaw and with it, manually pull
the jaw to its maximum open position, (approximately 15/32").
Gradually release the pull on the scale. Note the reading when the
jaw just starts to move.
If the spring scale reading at this point does not fall in the required
range (10 to 12 lbs.) the upset force adjustment screw must be reset,
To re-set the screw, disconnect the jaw upset spring (item 7, fig. 4)
and turn the screw, as required.
Replace the jaw upset spring and re-check as in steps 5 and 6.
Replace the weld lever return spring.
Prepared by: Roger Harris