Sealing

The seal bar rebuilding kit contains one of each of the parts listed below:

3-Yard Roll: Seal Bar Teflon Tape (2"x 3 yd)
3-Yard Roll: Flat Sealing Wire (4mm x 3 yd)
3-Yard Roll: Bag Trimming Wire (.7mm x 3 yd)
3-Yard Roll: Seal Wire Insulator Tape (1"x 3 yd)

When using a torque wrench, we recommend a 3.5 or 4 foot pound maximum pressure.

If these guidelines are not followed, the plastic bladder could crack under pressure.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

When using a torque wrench, we recommend a 3.5 or 4 foot pound maximum pressure. 

If these guidelines are not followed, the connector/jumper could snap.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

The Teflon tape requires periodic replacement, entirely dependent on use. Please check the seal time in all programs. Seal time should not exceed 1.7 seconds for typical 3mil boilable bags. If the seal wires have burned through, even if just on a small section, you will need to replace the tape. 

Tip: The seal bar should always be clean and free of any burn marks. Any indication of burn marks means that the tape is starting to wear out. Not replacing the tape in a timely manner will cause other items to start wearing out and being damaged such as the sealing wires and Teflon that sits below the sealing wires. Damaged wires will cause inconsistent seal or no seal at all. 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Download:  MVS Seal Section Continuity and Voltage Test (pdf) »

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

If your seal bar is not sealing, there are numerous possiblities:

  1. Confirm your seal time is set at least to 1.5 seconds.
    → LED Display: How do I setup a program?
    → LCD Display: How do I setup a program?

  2. Reset the safety overload switch (not available on MVS 26X and MVS 31X).
    The safety overload switch is a safety feature on your vacuum sealer.
    If it has tripped, please contact a qualified technician or electrician.

  3. The vacuum pump is not reaching full vacuum.
    Please setup a test program with 75% vacuum and 2.5 seconds seal time.
    → LED Display: How do I setup a program?
    → LCD Display: How do I setup a program?

    • If the the seal bar has sealed with the test program, please change the pump oil and recalibrate your vacuum sealer.
      → How do I change the oil?
      → LED Display: How do I calibrate the vacuum sealer?
      → LCD Display: How do I calibrate the vacuum sealer?

    • If the the seal bar has not sealed with the test program, please run the test program again:

      → If the seal bar does not raise you may have an issue with the bladder assembly, please contact a qualified technician or electrician.
      → If the seal bar does not get hot (please touch it with your hand right after the air return), you may have an issue with the power assembly, please contact a qualified technician or electrician.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

There are two possible causes:

  1. You have removed the teflon tape. Please apply new teflon tape to the seal bar.

  2. The sealing wire has burnt thought the teflon tape. You have lost the barrier between the sealing wire and the bag, that causes the sticking to the bag. Please replace the teflon tape on the seal bar.

    → How do I change the teflon tape on the seal bar(s)?
    → Order teflon tape for your vacuum sealer

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

The vacuum pump is not reaching its full potential, there are numerous possiblities why:

  1. Confirm your vacuum time is set to full capacity which is 99.9%.
    → LED Display: How do I setup a program?
    → LCD Display: How do I setup a program?

  2. Make sure the bag is not covering the suction line.

  3. Change the pump oil and recalibrate the vacuum sealer.
    → How do I change the oil?
    → LED Display: How do I calibrate the vacuum sealer?
    → LCD Display: How do I calibrate the vacuum sealer?

  4. If this has not fixed your issue, please contact a qualified technician or electrician.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

1. Switch around seal bars (left to right and right to left)
Does problem follow seal bar?
YES = there is a problem with seal bar
Check cut/seal wires, continuity and for ground short on
seal bar.
NO = Please contact a qualified technician or electrician.

If you are a qualified technician or electrician who is experiencing this issue and would like a document to help troubleshoot, please see the link below. 

Download:  MVS Double Bar - One Side Is not Sealing (pdf) »


Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

  1. Remove the old Teflon tape from the seal bar.

  2. Using acetone and a paper towel, clean the sealbar thoroughly to remove the adhesive residue, oil, and other contaminant so that the new Teflon tape will adhere to the surface of the seal bar.

  3. Peel off the yellow liner of the Teflon tape and discard properly.
    Teflon 8
  4. Lay the Teflon tape on a clean flat surface with glue side pointing up.

  5. Align seal bar on the center of the Teflon tape. The seal bar surface with wires should be on the glue side of the Teflon tape.
    Teflon 7
  6. Carefully lift up the seal bar from the flat surface (making sure the Teflon tape is stuck on the seal bar) and gently run a finger on the Teflon tape to smooth out the Teflon tape on the seal bar. Fold the tape ends neatly under the seal bar.

  7. Slit the Teflon tape where it makes the bend around the seal bar and fold the Teflon tape toward the seal bar surface.                                                                                                                                        Teflon 8-1                                                                                                                                                                                                Teflon 9                                                                                                                                                                                                  Teflon 10                

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

  1. Remove Teflon tape. Using acetone and a paper towel, clean the sealbar thoroughly to remove the adhesive residue, oil, and other contaminant so that the new Teflon tape will adhere to the surface of the seal bar.

    Teflon 1

  2. Remove the retaining screw and the wires. Leave the metal strips attached at both ends. Add new insulator tape to the bar, covering the top surface completely so that the wires do not make contact with the bar itself. 

    Teflon 2

  3. Cut the seal and cutting wire length, leaving 4 inches over lap at both ends.

    Teflon 3

  4. Pull the new seal and cutting wire under the square anchoring plate while bending the wires upward.

    Teflon 4

  5. Tighten the retaining screw.

    Teflon 5

  6. Repeat steps 4 and 5 at the other end, pulling the wire tightly to remove any slack.

    Teflon 6

  7. Cut the Teflon tape to length, leaving 4 inches extra at both ends.

    Teflon 7

  8. Peel the Teflon tape and adhere it to the bar.

    Teflon 8Teflon 8-1

  9. Slit the Teflon tape where it makes the bend around the sealbar and fold the Teflon tape toward the sealbar surface.

    Teflon 9Teflon 10

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Tools Needed:

  • Adhesive remover
  • Acetone
  • Paper towel
  • Cloth rag

Note* It is very important to thoroughly clean the surface before replacing the seal bar cushion. Oils accumulate preventing good adhesion to the lid.

Lid Preparation:

  • Remove the old adhesive using cloth rag and adhesive remover until the acrylic lid is clear.
  • Wipe area with a paper towel and acetone. The acetone provides a clean dry surface for the adhesive to stick to.


New Seal Cushion Installation:

 

  • Remove new cushion adhesive liner.
  • Align the new cushion on the seal bar with the adhesive facing the lid. If a metal track is present on the lid, massage lid cushion into metal track. 
  • Turn on machine. A program number will appear next to a P in the display.
  • Press the S button to show the vacuum percentage. Use arrows to set to 75%.
  • Press the S button twice, until the 3rd LED light is on for the sealing variable.
  • Using the arrows, set the sealing time to 2.0. Press S to save.
  • Close the lid to start the vacuum cycle. At the end of the cycle, check for good adhesion.
  • Firnly press down on the lid cushion by hand

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.