FMI PTW72, Руководство пользователя, Страница: 13 / 335

Manual, switching to On will activate the material cleaning brush. This
switch has no function when the Brush; Manual; Auto switch is in Auto.
Pull-Thru-Welder Sequence Of Operation
1. Make sure machine area clear of any obstructions, foreign materials or
coworkers. Infeed and outfeed area must be clear.
2. Energize welder. Whenever welders are energized the NA5s should power
up also.
3. Make sure NA5s are set correctly.
4. Turn all switches to neutral(center position) (if 3 position switch).
5. Pull E-Stop.
6. Press hydraulic start button power unit on.
7. Position beam to datum line at last roller of infeed conveyor.
8. Set carriage to desired height. 1/2 flange width-1/2 web thickness.
Example: 5” .25” web (5-0.25/2) = 2.375” or 2 3/8”
9. Position pressure wheels to approximate width of beam. Relax pressure
wheels (position switch to center position) when bean is in desired
position.
10. Close infeed ground shoes until beam can be conveyed without conflicting
with infeed ground shoes or web roller. Relax infeed ground shoe(center
position) to keep in position. Then use the infeed conveyor to move beam
into the welder to the first set of pressure wheels. Convey beam to start
position. (Front of material is on the outfeed side of the 1
st
welding head.)
11. Lower infeed hold down roller down until it contacts flange. This will help
to hold the beam down. Once roller is down on flange it should be relaxed
(switch in center position). Then energize the first set of pressure wheels.
Energize datum side copper back up wheels. Lower datum side electrode.
NOTE: If wire height needs to be adjusted, it should be done before starting welder.
This should also be done for both electrodes before welding. This is done by
positioning and clamping beam into place, bringing electrodes into place and
adjusting wire head until wire is contacting beam at the desired location. To
lengthen or shorten wire use the NA5’s wire up and down button to achieve
desired wire length.
12. Once above items have been completed energize the datum side flux valve.
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