Author Topic: Are these bad motors (Read 1172 times)

tangotonyb · « **on:** April 24, 2019, 06:04:09 PM »

Picked up a cheap DC24 that works fine, but makes a strange sound when it is turned off. As the motor dies, it emits a kind of groaning sound.

I investigated and noticed that if I held the motor filter tighter against the motor, the sound went away. Without the filter in place, the motor sounds fine.
I swapped the filter for another one from another good machine, and it didn't make any difference, so it seems it's not the filter that's to blame.

Any ideas please?

MVacs · « **Reply #1 on:** April 24, 2019, 06:13:38 PM »

They do that. A new filter is probably the easiest answer.

tangotonyb · « **Reply #2 on:** April 24, 2019, 06:43:59 PM »

Ok thanks - I had another old filter I swapped in and that cured it. Tried the faulty filter in my good machine and that resulted in the same noise, so yes - filter is to blame.

Dysonboy · « **Reply #3 on:** April 25, 2019, 05:05:45 AM »

Quote from: tangotonyb on April 24, 2019, 06:43:59 PM

Ok thanks - I had another old filter I swapped in and that cured it. Tried the faulty filter in my good machine and that resulted in the same noise, so yes - filter is to blame.

Deffo filter - I picked one up cheaply recently. Filter was being a pain with the noise so temporarily for the time being its not in the machine.

It not needed for it anyways and just makes the air cleaner soo

TV Man · « **Reply #4 on:** April 25, 2019, 02:08:56 PM »

I found its air escaping around rubber seal causing the effect ,High pitch drone if the filter is clean try removing rubber gaskett and soaking it in boiling water for 5 mins that may rejuvenate the rubber to make better seal.