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MFS Spare Parts

MFS Spare Parts FAQs

Straight answers to the questions people ask most when choosing spare parts for a mobile self-cleaning filter unit.

What spare parts are in this category?icon-minus-redicon-plus-red

They are replacements for a mobile filter unit whose cartridges are cleaned automatically by pulses of compressed air. The range includes filter cartridges, valves and diaphragms, the cleaning mechanism, pressure regulation and gauges, a compressor unit, pressure switches, control boards, relays, buzzers, motors, fan wheels, castors and covers.

How does the self-cleaning system work?icon-minus-redicon-plus-red

A short burst of compressed air is fired back through the cartridge to knock the collected dust off the surface, and the dust falls into the collection area. This keeps airflow up and extends the life of the cartridge.

The cleaning cycle is controlled by a pressure switch or a timer and control board.

How do I identify the right part?icon-minus-redicon-plus-red

Use the data plate for the unit type, voltage, phase and frequency, then the manual or parts list. Many parts differ between versions, such as the control board, compressor and motor.

Note the markings on the old part and send a photo if unsure. Our team can help you choose.

The filter is not cleaning itself. What should I check?icon-minus-redicon-plus-red

Check the compressed air supply or the built-in compressor first, then the pressure regulator setting, the valve and its diaphragm, and the control board and pressure switch. A blocked or leaking air line can also stop cleaning.

Isolate the electrical and air supply before opening any part.

What does the magnetic valve do and why does it fail?icon-minus-redicon-plus-red

It opens briefly to release the pulse of air to the cartridge. The diaphragm and spring inside wear with use, and dirt or moisture in the air supply can cause it to stick or leak.

Signs are weak or constant air release, or no pulse. A diaphragm and spring replacement set often restores it.

Why is clean, dry compressed air important?icon-minus-redicon-plus-red

Water, oil and dirt in compressed air can damage valves and diaphragms and can wet the filter media, which then clogs. Air preparation such as filters, dryers and drain points is normally used to protect pulse-cleaning systems.

The air quality and pressure your unit needs are set by its maker, so check the manual and data plate for your own machine. If you feed the unit from a site air supply, make sure it meets those requirements and drain any moisture traps regularly.