Why is air left in my pouch after I run an 'AUTO VAC & SEAL' cycle with my USV1?Updated a year ago

There are many variables that could be the culprit to having air left in your bags after running a cycle. Below are some suggestions to achieve a tighter vacuum:

1. Try expelling any extra air prior to putting a bag in the chamber. 

2. Make sure the opening of the bag isn't being pinched off during the vacuum cycle (due to the lid of the chamber, the bag being folded over, etc.). If the opening of the bag is being pinched off, it prevents air being removed from the bag during the vacuum cycle, then the bag excessively blows up and is sealed with air still in it. Ensure the bag is laid flat across the seal bar and the opening is inside the chamber. 

3. Check the seal bar and make sure it is in a lowered position by pressing down on it before you run the vacuum cycle. If the seal bar is in a raised position when you run the vacuum cycle, it will press against the seal pad causing the bag to be pinched off prematurely.