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Common Faults and Solutions of Vertical Packing Machine



Possible Cause


Film rupture

1. The film itself has a flaw.
2. Breakdown or poor connection
of the film-supply engine.
3. Proximity switch damaged.

1. Get rid of the flaw part.
2. Repair the connection of the engine.
3. Change the switch.

Sealed place is not tight

1. The inside of the film is not even.
2. The sealing pressure is not even.
3. Too low sealing temperature.

1. Get rid of the bad film.
2. Adjust the sealing pressure.
3. Increase the sealing temperature.

Sealing track is not straight

The wrong position of the thermal sealer.

Readjust the position of the thermal sealer.

The bag is not cut completely

1. The cutter in improper position.
2. The cutter edge becomes dull.

1. Readjust the position.
2. Sharpen or change the cutter.

The temperature of the thermal sealer does not increase

1. The heating pipe is wrong.
2. Circuit malfunction.
3. The fuse is broken.
4. The solid relay is broken.

1. Change the heating pipe.
2. Check the circuit.
3. Change the fuse.
4. Change the solid rely.

Sealer temperature uncontrollable

1. Thermocouple in a short circuit.
2. Something wrong with the temperature controller.

1. Change the thermocouple.
2. Change the temperature controller.

The film-supply engine does not move or stop

1. The film-supply control stick is stuck.
2. Film-supply proximity switch does not work.
3. Capacitor broken.
4. Fuse broken or Power Panel does not work.

1. Adjust the stick.
2. Change the proximity switch.
3. Change the capacitor.
4. Change the fuse and check the Power Panel.

Color code positioning does not work

1. Wrong parameter for the bag length (usually the actual bag length is shorter).
2. The wheels are worn and less friction.

1. Increase the parameter for the bag length, to make it a little longer than the expected bag length.
2. Change the wheels.

Bags are not pulled (the bag-pulling motor does not work)

1. Circuit problem.
2. The bag-pulling proximity switch does not work or the signal wheel too far away.
3. Step motor problem.
4. Control board problem.

1. Check the circuit.
2. Change the switch or adjust the distance of the wheel.
3. Change the step motor.
4. Change the control board.

Bags are stuck above the cutter

1. Too early bag-pulling time.
2. Wrong position of the upper bag-blocking board.

1. Readjust the bag pulling time.
2. Adjust the upper bag-blocking board.