Troubleshooting: MVS Vacuum Sealer Bar Sealing Issues
Monday, November 7th, 2011
A poorly functioning vacuum food sealer can be an extremely frustrating experience. This can lead to lost time, lost production and unprofessional results. What can really be frustrating is when the sealing problem doesn’t always manifest itself or it is inconsistent. Thanks to excellent technical support from Minipack, we have come up with a solution for one of the most commonly seen vacuum sealing problems.
While Minipack vacuum sealers are some of the most reliable on the market, as with any mechanical device, some problems can arise. If the sealing bar on your MVS vacuum sealer is experiencing issues, you may be having problems with the bellows. The bellows are typically located underneath the sealing bin on a chamber vacuum sealer.
Poorly functioning bellows typically manifest themselves when the sealing bar begins to have issues. Many of these issues include:
- Loss of continuity
- Loss of bag vacuum
- Inconsistent sloppy seal
- Raises unevenly
- Lacks contact with Red Lid Striker
Why are the bellows going bad? This is usually a result of moisture or liquid working its way into the bellows. While Minipack vacuum food sealers can be used with liquid, you are less likely to have issues if you use a liquid tray. Using a flat bin, without any upright bag support, can lead to spills. Contact us at 1-800-658-8788 for information on getting a liquid tray for your Minipack MVS vacuum sealer.

While you can replace the bellows, Minipack recently released a rebuild kit that will save you a lot of money. The rebuild process is simple enough that most people can handle it on their own without the need of a Service Technician or a Service Department. We will be posting rebuilt kit instructions on our blog soon.
You can order a bellow rebuild kit for your Minipack MVS vacuum sealer by calling 1-800-658-8788 x129 by speaking with our Service Technician. You can find our entire selection of vacuum food sealers here.


If you own a
When you first receive your Minipack chamber vacuum sealer, it is recommended that you calibrate it. Differences in elevation and atmospheric pressure vary from one place to the next. Calibration will ensure optimal machine operation.
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External “Clamp / Pouch” Vacuum Sealers - These types of vacuum sealers tout the title “external” because the entire vacuum sealing process is conducted outside the machine. Products are placed in a bag, which is then placed into the external sealer. The sealer is then clamped down onto the bag, after which it begins to remove the air. Once air has been removed, the bag is sealed.
Chamber Vacuum Sealers - These types of sealers can be used with most food and most retail merchandise. Once a product has been placed in a bag, the entire bag is placed in the chamber, ensuring the opening of the bag is placed on the sealing bar. The hood of the sealer is brought down, after which air is removed from the chamber. Once air has been removed, the bag is sealed and atmosphere is brought back to normal.
Chamber Vacuum Sealers – Chamber vacuum sealers are generally used for medium to high-volume packaging, although they can be used for light volume if needed. Chamber sealers are very easy to use and are typically faster than external sealers. They can be used to package fruits, vegetables, meats, liquids, powders and non-edible retail products.
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