[bobokines]

Re: Beko Cooker DC212w Oven knob

Thanks for that. I had guessed that but the photo on Connect is totally different…. nothing new there then!

Cheers

Bob

[bobokines]

Re: Bosch Dishwasher SGS43T52GB/21 overheating

Thanks Greg, most helpful

Bob

[bobokines]

Re: Bosch Dishwasher SGS43T52GB/21 overheating

Thanks mate, I’m going back on monday. I’ll let you know the outcome.

Bob

[bobokines]

davieb wrote:Sorry guys. Nothing to do with health and safety. It’s the new gas regulations for multi purpose dwellings. The Hotpoint oven did not have a flame failure device and so couldn’t be delivered or installed. Not explained very well by whoever cancelled the delivery though.

ER! it’s an electric cooker!!!

Bob

[bobokines]

Re: Bosch Dishwasher SGS43T52GB/21 overheating

Anybody able to help here please…

Bob

[bobokines]

Re: hotpoint d/w

There was a problem a few years ago due to the “umbrella” cap on the over temp stat.

This was only fitted on the machines with only one 85C stat and caused localised heating around the stat. The umbrella cap was modified to a smaller profile.

Bob

[bobokines]

Re: Whirlpool AWO10561 dispenser hose

Thanks John, you’re a star.

Thanks for the email as well :tup: Most useful!

Bob

[bobokines]

Re: Hotpoint wd860p power module connections

Thanks for all your help everyone. I am sure I can sort this one out now.

Bob

[bobokines]

Re: Hotpoint wd860p power module connections

thanks John.

I have checked and double checked every connection for good continuity and leakage between adjacent terminals.

Emw has checked the board twice…I really can’t work this one out!

My only thought is that I might have made a wrong connection somewhere.

Bob

[bobokines]

Re: Hotpoint wd860p module

Thanks boys. I’m still no nearer to sorting this out. The photos of both C00143068 and C00099905 on the Connect site both show different terminal configurations.

I will go back to the customer tomorrow and see if I can get a bit more info from the machine.

The problem all started with a noisy dryer element. It was vibrating during spin, so I replaced the heater box with the new kit. Sadly I didn’t realise that the kit didn’t include a gasket between the heater box and the drum and subsequently it leaked during spin and soaked the module. 😳

Gosh! I wish I hadn’t got involved.
🙁
Bob

[bobokines]

Re: AEG F86070v1 dishwasher???? fault diagnosis query

Ah! That’s blown that theory then!

TDS shows the breakdown but does not show any test functions?

Bob

[bobokines]

Re: AEG F86070v1 dishwasher???? fault diagnosis query

I’m not sure on this particular machine but the timer motor is often shorted out by the heater and therefore will not run during the heat pause. As soon as the stat opens and disconnects the heater, the timer will then run and advance out of the heat pause.

Bob

[bobokines]

Re: Capacitor values

To be honest I have virtually always used an 8 mfd replacement on creda machines.

However, I had a condenser dryer a few weeks ago that overheated the motor after I had fitted a 8mfd. It might have been a one off but I am not going to risk it again.

:lesson:
Here’s the theory … (btw I used to work as a design engineer in an Electric Motor factory … over 25 years ago now and I am going by memory so forgive me if the figures are wrong)

The value of the capacitance is very carefully calculated to give the correct starting torque and ideal running current for the expected maximum load conditions.

The temperature rise of the windings has to be within the criteria given for the insulation class. In those days, most motors were class B insulation and a max temperature rise of 80 degrees C was allowed.

Class B motors are normally fitted with a TOC rated at 80 degrees above ambient temperature (usually 105 C).

Any increase in the current through the windings , (either by increasing the load or by increasing the capacititance ) gives a higher temperature rise… Losses that give rise to internal heating are proportional to the resistance of the windings and the square of the current (known as I squared R losses)

Increasing the capacitance increases the current (through the start windings) by the square of the difference in capacitance. ie if an 8mfd is used instead of a 7 the increase is (8/7) X (8/7) = 1.31

The increase in temperature rise is proportional to the square of the increase in current ie 1.31 X 1.31 = 1.72 That’s 72{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} higher temperature rise (in the start windings) just by increasing the capacitance by 1mfd 😯

Remember also that in a tumble dryer, the ambient temperature is likely to be much higher than 25C.

Bob

[bobokines]

Re: H/Pm Tdc Cond Dryer

Be a bit careful using an 8 MFD capacitor. I had one a few weeks ago that I had previously fitted an 8mfd to and it then kept overheating the motor. I now only fit a 7 to these machines.

There is a 7mfd pattern part available now fromConnect CAP244

The motor current rises to the square of the increase in capacitance. ie if you fit an 8 instead of a 7 you are increasing the running current by over 30{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}

Bob

[bobokines]

Re: stoves Ec500doa grill element

thanks Chris. you’re a little gem 😀

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