Pete Posted November 7, 2019 Share Posted November 7, 2019 My lovely wife decided she was not happy with my Bosch hoover to clean the floor in outr new build so took the household hoover down instead. She did not realise that there was some concrete dust left and this has made the hoover overheat now. It is a Shark and I have cleaned all the filters and made sure there are no blockages but when I stripped the body down I noticed the armature/commutator is now covered in this dust and i think this is what is causing it to overheat. Would I be ok to try the WD40 contact cleaner to try and clean it out or would it be better with something else? I can get the motor out without disconnecting any wires so have good access all round. TIA Link to comment Share on other sites More sharing options...
Carrerahill Posted November 7, 2019 Share Posted November 7, 2019 (edited) No, use electrical contact cleaner or even compressed air, WD40 may damage the epoxy/lacquer causing it to break down and then short out the motor and it will also leave a film of WD40 on it which will then cause everything to stick to it afterwards exasperating the issue. Is it corded or cordless? The overheating is probably not related to the dust on the motor but rather the volume of air past the motor head reduced by blocked up filters. You say commutator? Is it not a digital brushless motor? My parents have a shark and frankly I think it is useless - slightest build up of dust and it starts to flash a green LED button and overheat - I go and find their Numatic Hetty if I have cause to vacuum at their house! Best vacuums ever! Edited November 7, 2019 by Carrerahill Link to comment Share on other sites More sharing options...
Bitpipe Posted November 7, 2019 Share Posted November 7, 2019 We bought a new Miele cylinder vacuum for the house when we moved in and tried to avoid using it for any building work (like dust from drilling) but ... you know. Somehow the bag got detached internally and whatever got consumed got right into the motor and it was totally dead. As it was under warranty, we returned it and got a bagless Miele in return. Link to comment Share on other sites More sharing options...
Pete Posted November 7, 2019 Author Share Posted November 7, 2019 50 minutes ago, Carrerahill said: No, use electrical contact cleaner or even compressed air, WD40 may damage the epoxy/lacquer causing it to break down and then short out the motor and it will also leave a film of WD40 on it which will then cause everything to stick to it afterwards exasperating the issue. Is it corded or cordless? The overheating is probably not related to the dust on the motor but rather the volume of air past the motor head reduced by blocked up filters. You say commutator? Is it not a digital brushless motor? My parents have a shark and frankly I think it is useless - slightest build up of dust and it starts to flash a green LED button and overheat - I go and find their Numatic Hetty if I have cause to vacuum at their house! Best vacuums ever! It is an electrical contact cleaner https://www.screwfix.com/p/wd-40-specialist-contact-cleaner-400ml/92716l Link to comment Share on other sites More sharing options...
Carrerahill Posted November 8, 2019 Share Posted November 8, 2019 (edited) 21 hours ago, Pete said: It is an electrical contact cleaner https://www.screwfix.com/p/wd-40-specialist-contact-cleaner-400ml/92716l Sorry, I just read the WD40 bit...Hoover/Vacuum. Yes. Edited November 8, 2019 by Carrerahill Link to comment Share on other sites More sharing options...
Pete Posted November 9, 2019 Author Share Posted November 9, 2019 20 hours ago, Carrerahill said: Sorry, I just read the WD40 bit...Hoover/Vacuum. Yes. It worked, hoover up and running again Link to comment Share on other sites More sharing options...
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