4.11 Adjusting The Mechanical Stop; Figure 4.23Adjusting The Mechanical Stop - Emerson Branson 2000 Series Instruction Manual

100-214-251 IWoper.book Page 68 Friday, June 16, 2017 4:12 PM

4.11 Adjusting the Mechanical Stop

The mechanical stop limits the downward travel of the horn. To prevent equipment
damage, adjust the stop so that the horn will not contact the fixture or nest when no
workpiece is in place.

Figure 4.23Adjusting the Mechanical Stop

1. Reduce the pressure to zero and manually lower the carriage until the horn is just above the
fixture.
2. If the horn does not reach the fixture and has not traveled 4 in. (101.6 mm), loosen the lock nut
and turn the mechanical stop adjusting knob clockwise until the carriage reaches the desired
position.
If the horn reaches the desired position before contacting the stop, turn the adjusting
knob counterclockwise until the stop contacts the carriage.
3. Recheck the clearance between the horn and the fixture and make any necessary re-adjustments
to the stop. You can use Horn Down (press HORN DOWN on the front panel) to check this
position while the welder is under pressure.
NOTICE
Turning clockwise will increase the stroke length; turning counterclockwise will shorten
the stroke length. Adjustment is approximately 0.04 in/1mm per rotation.
4. When the desired setting is obtained, tighten the locknut. The locknut will keep the mechanical
stop adjustment from vibrating loose during operation.
5. Place a workpiece in the fixture, adjust the air pressure and perform a test weld.
6. Re-adjust the mechanical stop, if necessary.
68 100-214-251 REV. 05