Ub-2200veck cyclone extractor vaccum power issue

Hello everyone .

Does any one have this issue with ub-2200veck ? I have purchased this from a shop that closed . Motor starts up normally (no weird sounds) also the filter motor is working . The issue i have is that the suction power seems to be very very low . I have read the manual check everything still cant figure out what might be wrong . Any suggestions .

Thanks .

What is the manometer reading compared to when it was working properly ?

Is the motor as loud as it was when running correctly ? It is very unlikely that the motor is running slower than it should unless the bearings have seized. Does the motor / impeller rotate freely by hand ( disconnect the power first) ?

There is not much that can go wrong other than air leaks on the input side or blockages in the cyclone or filter.