Numatic henry keeps cutting out & plug crackles in the socket!
I've got a numatic henry and yesterday started to experience problems. It was working fine, I left it for a while and then when I switched it onto use it again it would only work for a few seconds then stop. Have changed the 13amp fuse in the plug a couple of times and experienced the same problem. Have now noticed that when the plug is in the socket (and the socket is switched on) I can hear a crackling sound - eek! Any clues what the problem might be?
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Sadly you need to return to dealer, any problem contact Numatic (www.numatic.com), who supply it with a good 2 year warranty, which the dealer should support. This is a fault I see about 1 in 100, so you are a little unlucky. It will need a new switch and can easily be fitted by the dealer. With Henry's usual life expectancy anything from 5 -20 years it is well worth getting sorted.
Most common cause of this problem is a damaged flex. Damage may not be visible externally, but after a lot of bending and pulling the wire inside the flex can break. This usually happens close to the plug, so examine it very carefully for signs of damage (if there has actually been a short circuit, there may be a tiny hole blown in the outer insulation). Unfortunately there is no easy way to locate an internal break without special testing equipment. You can try just cutting off the old plug with about 6 inches of flex, and then fitting a new plug - if that doesn't work you may need professional help. Good luck!
You will need to remove the top cover of the vaccum by removing the 4 screws underneath.The you need to test with a multimeter if you have 240 volt power to the bottom of the switch. If you haven,t power there you will need to check the plug connection or replace the power lead.
Sounds more likely to be the switch than the motor, especially if it is the model with the top switch rather than the side "rocker" switch. If you are in the UK, speak to the technical people at www.a1cleaningsupplies.co.uk they can post a replacement. Otherwise outside or even within the UK you can contact the manufacturers technical people. Website is www.numatic.com