Anello di ricarica per fontane PETKIT: quando e come sostituirlo
By PETKIT | Auto Litter Box, Smart Feeder, Water Fountain | Published: 2026-10-16
Category: Consigli e cura
A step-by-step guide to spotting a worn fountain refill ring, fitting a new one correctly, and avoiding the leaks and jams that come from a bad seal.
Quick answer
Replace the refill ring as soon as you see visible wear, a loose fit, or warning marks on the ring itself, and always swap it during a full fountain clean rather than as a quick patch. A fresh ring takes about two minutes to fit, but rushing the seating step is the main cause of leaks and noisy pumps afterward.
Signs the ring is past its useful life
A refill ring is a wear part, not a permanent fixture. Stretch it slightly between your fingers: if it stays deformed, feels slick, or shows flat spots where it sat against the housing, it will not seal reliably no matter how carefully you reinstall it. Visible warning marks or an NFC-style replacement alert are the clearest signal to stop troubleshooting and fit a new ring.
Fit problems show up as symptoms elsewhere. A ring that no longer seats snugly lets water bypass the seal, which can leave a slow drip under the fountain, a pump that runs louder than usual, or a water level that drops faster than evaporation explains. If you have already cleaned the fountain and the noise or drip returns within a day, the ring is the first thing to check.
Match the ring to the right fountain before you buy
Refill rings are model-specific. The Refill Ring for Purobot Ultra Automatic Litter Box is built for that litter box's auto waste packing, not for a water fountain, so do not assume a ring you already own will fit a different appliance. Check the model name on the fountain base and order the ring listed for that model.
If your fountain model is not covered by a listed ring, treat that as a genuine gap rather than a reason to force a similar-looking part. A ring that is slightly too thick or too thin can seat unevenly, which is worse than an old ring that still fits correctly. In that case, contact support for the correct accessory before replacing anything.
What to have ready before you start
Set aside ten minutes, a soft cloth, mild dish soap, and a spare towel. Unplug the fountain and lift the pump and housing out so you can reach the ring without twisting the cord. Work over the towel so small parts do not roll away.
Do not use abrasive scrubbers or harsh solvents on the ring or its groove. They can scratch the sealing surface and shorten the life of the new ring. Warm water and mild soap are enough for normal maintenance.
Replacement steps
- Unplug and drain the fountain: Turn off power at the outlet, remove the lid and any filter, and pour out standing water before you touch the ring. Working on a powered fountain risks pump damage and makes the housing harder to handle. Checkpoint: the pump should be fully silent and the basin empty before you continue.
- Lift out the old ring without prying: Ease the ring out of its groove with your fingers, using a plastic card only if it is stuck. Metal tools can gouge the groove and create the exact leak path you are trying to fix. Common mistake: levering with a screwdriver and scratching the sealing surface.
- Clean and dry the groove completely: Wipe the groove with mild soapy water, rinse, and dry it with a cloth. Any grit or film left behind will sit under the new ring and let water creep past it. Checkpoint: run a fingertip around the groove; it should feel smooth and completely dry.
- Seat the new ring evenly, not stretched: Press the ring into the groove a section at a time, keeping it flat and untwisted. If it bunches on one side, lift it out and start again rather than forcing it down. Common mistake: stretching the ring to make it fit, which leaves it loose once it relaxes.
- Reassemble and run a test cycle: Refit the pump, housing, and filter, then fill with water and plug the fountain back in. Watch the seal area for a full minute before walking away. Checkpoint: no drip, no rattle, and normal pump sound means the seal is seated correctly.
- Log the replacement date: Note the date you fitted the ring so you can compare wear next time. If the new ring fails within weeks, the problem is likely the groove or pump seating, not the ring itself. Next step: if a drip persists with a fresh ring, inspect the housing for cracks before buying another.
Product facts
- Refill Ring: The Refill Ring for Purobot Ultra Automatic Litter Box is made from durable, leak-proof PE material and includes built-in NFC recognition plus visible warning marks that notify you when replacement is needed. The warning marks and NFC alert remove the guesswork from replacement timing, and the PE material is designed to hold its shape through repeated waste-packing cycles.
