Seal-A-Tron
3815 S.E. Naef Rd. Portland, OR 97267
Ph # 503-652-5200
L-Bar Sealer Set-Up Guide
Machine Maintenance
To keep your machine in good working order, inspect all parts of the machine
periodically.
Check for missing or loose parts and bolts. Clean and re-tighten seal wires. Check worn
seal bed pad and burnt seal bed tape. Inspect conveyor motor brushes. After 2-3 years
of operation, clean conveyor motor inside off carbon dust. Excessive carbon dust will
result in motor failure and/or motor speed control failure. If the conveyor fuse blows,
there is a reason for it. Inspect the conveyor before replacing the fuse. Never increase
the value of the fuse.
Adjusting the L-Bar
First make sure your seal-bed pad and seal-bed tape is in good working order.
With power off, press down the L-Bar onto the seal-bed. Check if the L-Bar is pressing
down on the seal-bed evenly and square on both sides. If not, loosen all bolts fastening
the L-Bar to the top frame. Loosen also both bearings holding the L-Bar. Now press the
L-Bar evenly down and keep level. Let a helper tighten all the bolts.
Adjusting Seal Pressure;
Loosen the big counter nut on the (round) magnet plate bolt. Turn the plate in (clock-
wise) one turn at a time and press down the L-Bar (power on). Repeat this until you
hear the magnet plate humming. Now back off the plate (turn CCW) until the humming
stops. Tighten the counter-nut. The L-Bar is properly adjusted.
Adjusting Cycle-Start Switch
With power on, lower the L-Bar slowly until the magnet engages. Repeat that until you can
estimate the height between the seal wires and seal bed at the instance the magnet engages.
The distance should be about ¾
” but not less than ½”. If the distance is to short, the l-bar will
bounce while sealing, resulting in poor seals. Adjust the switch accordingly.
Adjusting L-Bar Rise Speed
After the seal-cycle ends the l-bar should return to high position. If it does not return or stops
halfway, the spring is out of adjustment, broken or worn. Return spring is attached to the rear
part of the l-bar.
If the l-bar bounces upon returning to the high position, turn the return-cylinder CW to slow
down the rise speed. Turn CCW to increase l-bar rise speed.
