In message , T i m
writes
On Tue, 24 Mar 2020 16:44:02 +0000, Shamra
om wrote:

My numatic sometime working sometimes not working but power light is on..

Motor brushes?

Bags
and filters are looks fine.. Anyone help me what might be the problem?

Depending on your skill levels and access to a suitable screwdriver
and multimeter, you should be able to access the insides (with it
unplugged) and test for continuity up to the motor etc.

Umm. I have just *done* our cleaners Hetty.

There were socket head screws in deep pockets.

--
Tim Lamb