Is your impulse sealer not heating up? Is the seal splotchy and weak? This article is to help with our most frequently asked questions regarding problems with impulse sealrs. Often, if you are having a problem with your sealer, the solution can be found in the following parts: heating element, PTFE adhesive, PTFE cover, microswitch, mounting spring, and/or timer. Let us know if you have a problem that isn't listed in this guide and we can try and assist you!
- Check element and PTFE cover and adhesive.
- Element: This is the wire (flat or round) that heats up to seal or cut the bag/film. Remove the PTFE cover and check that the wire is not discolored, bent, or broken.
- PTFE Adhesive: This is the 1/2" piece with an adhesive backing UNDER the heating element. It should extend past the seal area 1/2" on either side because it is the barrier between the metal machine and the metal heating element. For the PTFE adhesive, you must replace the bottom sealing strip whenever you change the element. The adhesive serves as a barrier between the heating element and the sealer's body. When the sealer's heating element has burned through the bottom adhesive and arc'ed on the sealer's body, the element will break as well as destroy the timer.
- PTFE Cover: The PTFE cover that goes over the
heating element must be whole to prevent the plastic bags or film from
sticking to the element. For the teflon cover, we recommend changing the
cover BEFORE it burns through. As the cover wears, you will see a
discoloration where it comes into contact with the element, you may also
notice that your element is sticking to the thermoplastic material you
are sealing. You can maneuver the cover back and forth to allow the
element to come into contact with the unused portions of the PTFE
cover. If you are sealing/cutting a thicker plastic material (higher
amount of heat) you may go through a lot of PTFE covers.
- Listen for "click" from microswitch when pushing bar down. This click should occur right before the upper bar comes into contact with the lower. If there is no click try the following:
- Hand Sealer: Slightly bend metal switch lever so that when arm of sealer is brought down, the lever makes contact with microswitch and a click can be heard.
- Foot Sealer: Small bolt for limit switch must be tightened as needed to make contact with the microswitch.
- Auto Sealers: A 3.5" screw that is mounted on upper
jaw must be loosened so that it will make contact with microswitch
which is mounted on left side of hinge bracket.
Click here for a video showing what the click is supposed to sound like.
- Mounting Spring: Make sure that the spring the
element mounts on is intact. Replace if damaged. Please check also that
the mounting spring is not rusted or worn in any way as this will
prevent the element from conducting heat.
- Timer Light: The light on the timer should come on
briefly when the seal bar is brought down for sealing. If it does not
come on, the timer PC board probably needs replacing.
If you are still having issues with your sealer, please call us at: 559-539-3076 and we can assist you!