NOTE! Never modify the filter unit. Repairs must only be carried out by personnel trained in Filtronics products. If the unit is not working, check that the power supply is correctly connected.
To ensure reliable operation, the main compact filter must be replaced at least once per year – or sooner if air quality limits are exceeded in your workspace.
A: Red light + alarm (low suction): Press the black button for 10 seconds until a beep is heard. Check the nozzle and extraction arm and clean if needed. If the light comes back after 5 minutes → the filter is worn out. See "filter replacement" below.
B: Red light blinking + alarm (filter time exceeded): Reset by holding the black button for 10 seconds until a confirmation signal is heard.
IMPORTANT: The alarm only monitors the pre-filter and particle filter. The gas filter may need to be replaced earlier – if smell breaks through, change it even if there is no alarm. If the unit is rarely used, the main filter should still be replaced yearly to maintain gas separation efficiency.


C: Yellow light blinking (filter time exceeded): Turn off power. Turn it on again while holding both + and – buttons until a beep confirms reset. Wait 5 seconds, power off, then power back on.
D: Red light + alarm (low suction): Silence alarm by pressing the + button. Turn off the unit. Check nozzle/arm for blockages. If the alarm returns after restart → replace filter.

A: Red light + alarm: Press black button for 10 seconds to reset. Check and clean. If light returns → replace filter.
B: Red blinking light + alarm: Hold black button for 10 seconds to reset filter monitoring.
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