Keep your W&H Lisa steriliser reliable, protect your reprocessing workflow and know when to book expert support.
Your steriliser is central to a safe, efficient practice. A planned maintenance routine helps reduce interruptions, supports your team and protects the equipment your clinic relies on every day.
At Dental Installations Australia, we supply W&H Lisa consumables and provide authorised technical support, servicing and repairs for dental practices.
Important: Always follow the maintenance prompts shown on your exact W&H Lisa model. Cycle and time intervals can vary by model and configuration.
What do the numbers on the W&H Lisa maintenance screen mean?
The screen uses cycle counts and time intervals. Complete the task when you reach either the number of cycles or the time period—whichever comes first.
For example, 400 / 12 means complete the action at 400 cycles or 12 months, even if the unit has not reached 400 cycles.
W&H Lisa maintenance schedule
| Maintenance task | When it is due | What it involves | Part reference |
|---|---|---|---|
| Bacteriological filter replacement | As shown on your Lisa maintenance screen | Replace the filter using the correct compatible part. | W322400X |
| Dust filter replacement | As shown on your Lisa maintenance screen | Replace the dust filter for Lisa 2019 and onwards when prompted. | F364511X |
| Door seal replacement | As shown on your Lisa maintenance screen | Replace the door seal to help maintain a secure chamber seal. | F460504X |
| Door locking mechanism inspection | As shown on your Lisa maintenance screen | Arrange inspection or lubrication where required. | Contact DIA |
| Chamber and tray cleaning | As shown on your Lisa maintenance screen | Clean the chamber interior and tray rack with approved products and methods. | Follow W&H instructions |
1. Replace the bacteriological filter
The bacteriological filter supports the correct operation of your steriliser. Keep the correct replacement part on hand so a scheduled maintenance task does not delay your reprocessing workflow.
Shop W&H Bacteriological Filter — SKU W322400X
2. Replace the dust filter
The W&H dust filter helps protect the unit and should be replaced when your maintenance schedule requires it. The confirmed part for Lisa 2019 and onwards is:
Shop W&H Dust Filter for Lisa 2019 and onwards — SKU F364511X
3. Replace the door seal
The door seal, also called the gasket, helps maintain a reliable seal between the chamber and door. Check it regularly for wear, cracking, flattening or residue, and replace it when prompted.
Shop W&H Door Seal — SKU F460504X
A simple maintenance routine for your practice
Daily
- Follow your practice’s approved reprocessing workflow.
- Check for visible residue, leaks, unusual noises or error messages.
- Report concerns early rather than waiting for a failed cycle.
- Keep records in line with your infection-control processes.
When a maintenance reminder appears
- Check the exact message and interval on your Lisa screen.
- Confirm the relevant part number before ordering.
- Use only compatible W&H consumables.
- Contact DIA if you are unsure which part is required for your model.
When should you book a W&H Lisa service?
Book support if your steriliser has repeated error messages, interrupted cycles, water leaks, a door that will not close or seal correctly, unusual noises, or visible damage.
Dental Installations Australia is your authorised technical team for W&H Lisa support. Book a service or repair with DIA and our experienced technicians will help keep your steriliser reliable and your practice moving.
Frequently asked questions
What is W&H part F364511X?
F364511X is the W&H dust filter for Lisa 2019 and onwards.
What is W&H part W322400X?
W322400X is the W&H bacteriological filter.
What is W&H part F460504X?
F460504X is the W&H door seal for compatible Lisa steriliser models.
Can my dental team complete W&H Lisa maintenance?
Routine cleaning and approved consumable replacements may be completed by trained team members following the official instructions for the exact unit. For faults, technical servicing or anything uncertain, book support with DIA.