Help on old Zanussi washer

[MNewnham]

Re: Help on old Zanussi washer

Its on a 240v circuit. (I checked it using a voltmeter. Although Normal voltage is 110v, houses here have a 240v AC circuit as well for things like Dryers and A/C units.

[Penguin45]

Re: Help on old Zanussi washer

Been pondering this a bit. Your sound clip suggests that your pump motor is making a clicking noise, before evening out as the water disappears. I think you need to remove the motor from the housing and check that the impellor is properly attached to the shaft. When turned manually, it should resist and then “ping” 4 times a revolution. If the impellor does not resist, it probably has broken the drive dog and is therefore faulty. The other possibility, which happens occasionally is that the pump simply does not get up to speed and will not pump.

Not much else it can be really, UNLESS the sump hose is drooping below the inlet of the pump chamber, in which case an air lock is a distinct possibility. This was a well known and regular fault on Hoover washers some 15 years ago when the new type pump was first fitted.

Regards,
Penguin45

[Martin]

Re: Help on old Zanussi washer

Fascinating thread this, beats Evren Yurtsen’s for originality for sure 😀

OK, the pump looks fine, there’s no blockage in the hoses both to and from the pump, it’s is wired correctly AND now I too have heard it running. The Askoll pump is new so that rules out wear and its fitted into it’s housing correctly so it should be clear enough to rotate. Indeed it sounds as though it is rotating smoothly as any magnet pump should. 😉

But I think that whilst it is under load (i.e actually pumping water) it does indeed sound laboured 😕

So my conclusion is the fact you are using a 240volt 50Hz pump on a 240volt 60Hz supply and little magnet pump won’t like that extra 10 cycles and its overall power potential therefore will be radically affected 🙁

[MNewnham]

Re: Help on old Zanussi washer

Penguin45 – could you clarify sump hose please

Iwill verify if the supply is 50 or 60 Hz

[Penguin45]

Re: Help on old Zanussi washer

“Sump hose” – connects the bottom of the drum to the pump housing inlet. If it sags down (instead of running evenly downhill), it is possible that the hose can droop below the level of the pump housing inlet – this will airlock the pump, so whilst it is running, it won’t move anything. Obtusely, dropping the hose into a bucket will allow the weight (or head) of water to force its way through and out.

Regards,
Penguin45.

[iadom]

Re: Help on old Zanussi washer

Martin wrote:

So my conclusion is the fact you are using a 240volt 50Hz pump on a 240volt 60Hz supply and little magnet pump won’t like that extra 10 cycles and its overall power potential therefore will be radically affected 🙁

But if so, how did the original pump work, it sounds as though it has done so until recently,it would have been the same as the replacement if he purchased it in the UK?

[Penguin45]

Re: Help on old Zanussi washer

Dat’s why I asked for the piccy of the old pump – the label is just about legible if you blow it up a bit – 50Hz.

Penguin45.

[Martin]

Re: Help on old Zanussi washer

Penguin45 wrote:it is possible that the hose can droop below the level of the pump housing inlet – this will airlock the pump

To confirm this theory either way simply allow the machine to fill then take the filter cap off! If your floor floods in seconds…then the hose is OK 😆

[MNewnham]

Re: Help on old Zanussi washer

I checked the sump hose, while it is a little saggy with old age (aren’t we all), A little judicious tightening does not change in any way the problem.

I’m going to dissasemble the unit again for a little bench testing. There isn’t the possibility that the motor is turning the wrong way? Which way should it turn?

[Penguin45]

Re: Help on old Zanussi washer

We keep meeting……. The pump will revolve in either direction, totally at random, and doesn’t actually matter – if you are going to strip the assembly down again, you will notice that the pump chamber is symetrical, thus allowing the water to be ejected regardless of which way the pump actually turns.

Quite seriously, considering everything that you have tried, it almost has to be a faulty pump motor – there is nothing left!

Regards,
Penguin45.

[bobokines]

Re: Help on old Zanussi washer

I had a dishwasher do this to me a few months ago. It turned out to be a small piece of plastic lodged in the convoluted drain hose. The plastic was transparent and impossible to see or feel. The blockage moved like a small valve and was only causing a problem under full flow conditions.

Can you try a different drain hose?

Good luck

Bob

[MNewnham]

Re: Help on old Zanussi washer

bobkines – have already tried that

[electrofix]

Re: Help on old Zanussi washer

have had same problem on board a ship

supply 240v 60 hz

old shaded pole motor pump with fan on rear ok no probs

new magnetic pump will not start

cure find old type pump to match old one

hope this helps

Dave

[Penguin45]

Re: Help on old Zanussi washer

Dave,
It’s a magnetic pump motor that’s being replaced………

Penguin45.

[bobokines]

Re: Help on old Zanussi washer

Your old pump is rated at 34W. is the new one the same rating as some are 20W?

Bob

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