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SCS Spare Parts

SCS Spare Parts FAQs

Straight answers to the questions people ask most when choosing and fitting spares for a pulse-cleaned cartridge filter unit.

How do I identify the right spare part for my filter unit?icon-minus-redicon-plus-red

Start with the data plate on the unit, which shows the model and usually a serial number or year of manufacture. Note these down before you look for a part, because makers sometimes change components part-way through a model's life.

Then check the parts list in the manual, which shows each part with its reference. If you cannot find the manual or are unsure whether a part matches, take a photo of the old part and the data plate. Our team can help you check before you buy.

How often should the filter cartridges be replaced?icon-minus-redicon-plus-red

There is no fixed interval, because it depends on how much fume and dust the unit handles, the type of work and how well the cleaning system is working. The usual sign is that the pressure reading across the filter stays high even after cleaning, or airflow at the extraction points drops noticeably.

Many units have a gauge or indicator for this. Replace the cartridges when the reading stays above the maker's recommended level, and always as a complete set so the airflow stays even.

How does the compressed air cleaning system work, and what can go wrong?icon-minus-redicon-plus-red

Short blasts of compressed air are fired back through the cartridges to knock the collected dust off into the collection container. The air is released by valves, which are controlled by a timer or by a pressure sensor.

Typical faults are a worn valve diaphragm or spring, a blocked or leaking air line, low or wet supply air, or a failed control board. If the cartridges are not cleaning, the pressure across the filter climbs and airflow falls. Check the air supply first, then the valves.

How do I know if a cleaning valve needs a repair kit?icon-minus-redicon-plus-red

Signs include a constant hiss of escaping air, a valve that fails to fire when the cleaning cycle runs, or cartridges that clog even though the air supply is correct. Diaphragms and springs are wear parts and harden or split with age.

Isolate and depressurise the air supply before you take a valve apart. A repair kit replaces internal wear parts such as the diaphragm and spring, so it will not cure a cracked or damaged valve body, and it must match your valve. Check the data plate and manual for your unit, and replace the whole valve if the body is damaged.

Is it safe to empty the dust container, and how often should I do it?icon-minus-redicon-plus-red

Treat the collected material as hazardous. Welding and cutting dust can contain metals such as chromium or manganese, so wear suitable respiratory protection, gloves and overalls, and avoid raising dust when you empty it.

Empty the container before it gets full, because an overfull container can feed dust back into the cleaning system. Dispose of the contents as your waste rules require, and follow the maker's instructions and your own risk assessment.

Can I use compatible parts instead of genuine ones?icon-minus-redicon-plus-red

Compatible parts can work, but the quality varies. For filter cartridges, the filter media, the seals and the exact dimensions all affect how well the unit captures fume and how long it runs between cleans. A poor fit lets dirty air bypass the filter.

For safety-related or control parts, such as spark protection, pressure switches and electrical components, matching the original specification matters most. If you are unsure, use parts that are confirmed to suit your model.