FFU fan filter unit maintenance

- Jan 03, 2018 -

The proper maintenance of the FFU fan filter unit can improve the life of the FFU fan filter unit and save the enterprise a certain cost.

1.According to the cleanliness of the environment, the FFU fan filter unit changes the filter (the primary filter is usually 1-6 months, the HEPA filter is generally 6-12 months, and the HEPA filter can’t be cleaned).

2.On a regular basis (usually once every two months) with dust particle counter measuring clean area cleanliness, when measured cleanliness does not meet with requirement of cleanliness, users should find out the reason (if there is leakage,HEPA filter failure, etc.) if HEPA filter has failed, it should be replaced a new HEPA filter.

3.When replacing the HEPA filter and the primary filter, the machine should be stopped.

4.Users should pay attention to the following items when replacing the HEPA filter

(1) Pay special attention to the removal, handling and installation of the filter when replacing the HEPA filter. The filter media is intact and the media is prohibited to be touched to cause damage.

(2) Before the FFU is installed, the HEPA filter will be applied to the light to see whether the HEPA filter is damaged due to transportation and other reasons. If the filter media has a loophole, it cannot be used.

(3) When replacing HEPA filter firstly to raise box body, and take out the failed HEPA filter, change into a new HEPA filter (note that the flow arrow symbol of HEPA filter shall be same direction with the FFU), to put cover back in place after making sure there’s no leakage around the HEPA filter frame.


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