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From: Peter Kolbe on 31 Jan 2010 13:32
Some of the Pump motors have a slot on the back of the shaft, that you can
try turn (back and forth) with a screwdriver to free it up.

If it has a fan on the back, you can pull off the protective cover and try
turn the fan by hand (just don't undo the long screws that hold the motor
together!!!).

P

"malua mada!" <fritzo2ster(a)gmail.com> wrote in message
news:8f7c3940-7e18-4388-a9f8-36283088b44a(a)b36g2000pri.googlegroups.com...
On Jan 29, 3:09 pm, Usenet <use...(a)abel.co.uk> wrote:

> I *still* have a problem though! When the pump is meant to kick
> in, it doesn't, it merely "hums". My guess is that a month of not
> working, being tipped over on it's side, and having water drained from
> it, etc, has seized up the pump.
>
> Does anyone know... what do do you turn in the pump or induction
> motor in an attempt to unstick it? Here's a very amateur picture of my
> machine's pump:
>
> http://i50.tinypic.com/2w6b58o.jpg
>
Make sure the pump CAN turn i.e. try to turn the impeller. There might
be a foreign object , something displaced from flipping the unit etc.
The crud in the water supply may be connected to recent freeze/ thaw.
Breaks loose all kinds of scale and rust.
Good luck



--- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: Usenet on 1 Feb 2010 22:00
Usenet wrote:
> Is this how it's meant to feel, when you push the cooling blades
> around? The resistance is constant all the way around, so maybe this is
> normal...
>
> ...All advice welcome!

Dear Usenet,

The dishwasher is operating normally again!

I screwed the back plate back on, and connected the dishwasher up
again to the water input and output. I ran it on the 15 minute pre-wash
no heat cycle, fine. Then a 30 minute, 35 degree heater cycle with
three changes of water, fine. The rotating arms took a while to clear
themselves of little dried cloggy bits, but at the end they were going
round like they always have. Swishing again!

What a journey I feel I've been, through! It so happened that
there wasn't anything wrong with the dishwasher per se; the fault in my
case was the slowly gunked-up water supply all along. But it has been
incredibly worth it -- taking off the panels, seeing the workings,
testing with the multimeter, and looking over the whole works. Now the
dishwasher, washing machine, power wash, and eh even the power drill,
and jigsaw, and anything else, are not mysterious black boxes anymore!

-

A note about Haynes' "The Dishwasher Manual" by Graham Dixon:

This book leaves much to be desired. It is not up to the standard
of the world famous car manuals upon which Haynes' reputation rests.
OK, the Haynes label gave me the initial encouragement to make me think
I could repair my dishwasher, but beyond pictures of actual
sub-components (most of which come from Dixon's earlier "The Washing
Machine Manual"), the book hasn't been much help. More of a hindrance
really. To be honest, the book seems not even half finished. The index
of only several dozen entries doesn't fill a single page. Many of the
diagrams have no labels and are not given a reference number. Repeated
photographs of the same component, but with different comments, are
seemingly there to bemuse the reader and help pad out the book. There
are many infuriating chapters of one, or one and a half patronizing
pages. The flow charts (speaking as a programmer myself) -- which are
meant to help organize complexity -- are instead there to make the
simple seem more complex, are all badly titled, unlabelled, completely
moronic and waste yet more pages. And here's another what for: the
chapter on pumps and motors is all about the goddamed potted physics,
and the pros and cons of various approaches to motor design. No mention
of how easily they can seize up, or how to go about unsticking them.
There's a corporate engineering drawing of a "generic rotor" with
cooling blades floating in space, but without anything else, no context!
Where's the explanation on how to test if the motor's working, in
situ? Or about taking care when manipulating big hose clips, or
lubricating the inside lip of the hose with a smear of washing up liquid
when putting it back on, of NOT using grease, which will corrode the
rubber, or checking out the auricle's side exit first?

I hope someone in the near future writes a *real* Dishwasher Repair
and Maintenance Manual. These are, after all, increasingly the times
when we're going to badly need one.

With kind regards and best wishes to all,

Sandy
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