BiodiscAccessories / Spares

Klargester BioDisc units were produced in several models over the years, each specified with a particular motor rating and mounting arrangement. Check the data plate on your unit or the existing motor for a model number before ordering, as fitting the wrong motor can affect disc rotation speed and treatment performance. If you're unsure, our team can help match a motor to your plant's serial number or original specification.

Drive belts typically wear gradually and should be inspected at each service for cracking, glazing or slippage, with most needing replacement every few years depending on usage. Bearings tend to last longer but can seize or wear if the unit runs dry or is neglected, so unusual noise or juddering is usually a sign they need attention. Keeping spares on hand means a worn belt or bearing doesn't leave your treatment plant out of action while you wait for parts.

Basic checks like inspecting belt tension or listening for bearing noise can be done by a competent homeowner, but replacing the motor or drive components usually involves isolating electrics and working inside the tank chamber. For safety and to avoid invalidating any warranty, we'd recommend a qualified drainage engineer carries out the actual replacement. We can supply the correct part so it's ready for your engineer's next visit.

A BioDisc alarm monitors for common faults such as motor failure, blocked inlets or unusual water levels, giving you an early warning before untreated effluent starts to back up or discharge poorly. This is particularly useful where the plant isn't checked daily, as problems can otherwise go unnoticed for weeks. Fitting an alarm is a low-cost way to protect both treatment performance and compliance with your discharge consent.

Yes — if the tank has been installed with the access chamber below or close to ground level, a riser extension brings the lid flush with the surface for safe, easy access. This is especially relevant where ground levels have been raised after installation, such as with landscaping or new paving. Risers and lids are matched to the diameter of your specific BioDisc chamber, so measure before ordering.

Our BioDisc spares are designed specifically for Klargester BioDisc systems and are matched to that range's motor mounts, belt sizes and disc assemblies. They're not generally interchangeable with other manufacturers' rotating biological contactor plants, even if the overall design looks similar. Always check your plant's make and model before ordering to ensure a correct fit.