Henkelman vacuum sealers are built for reliability and performance — but even the best equipment needs maintenance. If your sealer isn’t performing like it used to, this guide from Invacus will help you identify common issues, fix them fast, and keep your machine running at peak efficiency.
1. Vacuum Pump Isn’t Reaching Full Pressure
Symptoms:
Weak vacuum or air left in the bag
- Longer cycle times
- Inconsistent seals
Possible Causes:
- Low or dirty vacuum pump oil
- Leaking lid gasket or chamber seal
- Clogged air filter or blocked hose
Fix It:
- Check and replace the pump oil regularly using the manufacturer’s recommended type. You can always order more oil from Invacus Parts here Henkelman Vacuum Sealer Oil – Invacus Parts. If you have a table top model our video below will show you how to change the oil.
2. Inspect the lid gasket for cracks or wear. Replace if needed — this is a simple and inexpensive part. To replace check the gaskets here -> Henkelman Vacuum Sealer Lid Gaskets – Invacus Parts Our video below will help you on the lid gasket installation.
3. Clean or replace the air filter and vacuum hose if you notice buildup or blockages.
2. Poor or Incomplete Seal
Symptoms:
- Bags not sealing completely
- Inconsistent Sealing
Possible Causes:
- Screws holding seal wire are loose
- Damaged or dirty Teflon tape
- Incorrect seal time
- Seal cylinders are not pushing the seal bar up
Fix It:
- Replace both the seal wire and Teflon tape regularly — they’re wear items and easy to install.
- Clean the sealing bar to remove oil or debris.
- Adjust the seal time
You can always order more seal wire and Teflon tape from a Henkelman service Kit! Make sure to check for your machine's correct service kit part number. Henkelman Service Kits – Invacus Parts
3. Machine Doesn’t Start or Cycle
Symptoms:
- Power on but no vacuum cycle
- Display not responding
Possible Causes:
- Faulty microswitch
- Loose electrical connection
- Control board issue
- Circuit Breaker tripped
Fix It:
- Confirm power supply and fuses are in good condition.
- Check microswitch sensor for proper function — replace if they don’t click or trigger. You can order more from Invacus Parts Henkelman Micro/ Lid Switch 0900458 – Invacus Parts
- If the display still doesn’t respond, the control board may require replacement.
4. Excessive Noise or Oil Leakage
Symptoms:
- Unusual pump noise
- Oil leaking around the base
Possible Causes:
- Overfilled pump oil
- Worn seals or gaskets
- Air leak causing cavitation
- Exhaust Filter not properly installed
Fix It:
- Drain and refill oil to the correct level.
- Replace worn pump gaskets or seals.
- If noise persists, consider a pump rebuild kit or professional service
Preventive Maintenance Tips
Regular maintenance is the best way to avoid breakdowns:
- Change vacuum pump oil every 3-4 months
- Clean sealing bars and replace Teflon tape weekly.
- Inspect lid gaskets and air filters monthly.
- Run the pump cleaning program at minimum twice per week.
Always use OEM Henkelman parts to maintain performance and warranty coverage.
Genuine Henkelman Parts — Fast Shipping from Invacus
When you need replacement parts, Invacus Parts has you covered.
We stock a full line of Henkelman vacuum sealer parts — including:
- Seal wires and Teflon tape kits
- Chamber lid gaskets
- Vacuum pump oil and filters
- Microswitches and control components
👉 Browse by model at parts.invacus.com and get your sealer running like new.