hotpoint armatures

[Dave_Conway]

Re: hotpoint armatures

I have to say I also release the brush before installing in to the motor, I’ve had a few snapped in half while still unreleased 😕

Dave.

[clivejameson]

Re: hotpoint armatures

Might be interesting to do a quick poll on those who release the brushes before fitting and compare it with the failure rates experienced?

[Dave_Conway]

Re: hotpoint armatures

There you go..

http://www.ukwhitegoods.co.uk/modules.p … pic&t=4523

Dave.

[clivejameson]

Re: hotpoint armatures

nice one! :tup:

[Phidom]

Re: hotpoint armatures

I only use the laminated brushes on 1200 spin machines as I’ve had a lot of them split down the middle. I also noticed they had changed the casing material but I’ve not seen any of these melt yet. I wonder if it would be worth keeping some of the old white cases and fitting them with the loose carbons available from Homespare or Electrue?

[dpm]

You guys are all aware that laminated brushes are used to reduce sparking because of their resistance, yes? The different grade of carbon in the middle dissipates the inductive flash between adjacent segments on the commutator, so that rather than having a short accross two segs, you’ve got a number of ohms…

[iadom]

Re: hotpoint armatures

If I am changing brushes with the motor in situ, I use a right angled, flat bladed screwdriver to free the old brushes then release the new brushes first, if I am fitting an armature I do either. The latest brush gear with the pale brownish holders have in the main been better. However a large number of cases of brushes burnt in the holders are down to intermittant pump siezure or sump blockage.

[Martin]

dpm wrote: The different grade of carbon in the middle dissipates the inductive flash between adjacent segments on the commutator, so that rather than having a short accross two segs, you’ve got a number of ohms…

Thanks for that dpm. I for one (and I suspect many others) did not know that 😳

What puzzles me is why they produced them in the first place? I would guess therefore that they are more durable than say the 161460 brushes and may be more reactive at lower speeds by the digital circuit boards that control them?

I believe the later FHP made motor that replaced it uses a more conventional carbon brush unit. And now Hotpoint are wrestling with Bosch/FHP and Ceset motors for all sorts of other reasons best known to them 😕

Martin

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