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I seem to have a run of faulty new grill elements for the Neff oven.
Out of the three new elements, two of them failed on insulation test. The oven is connected to a modern fuseboard which seems to trips if insulation falls below 2mohms.
The new elements I tested gave a reading of 1mohm. I thought my megger was faulty but it was not the case. The supplier says it was damp and suggested I should plug it in with the earth removed and warm the oven up for 30 mins then reconnect earth.
I’ve never heard such unsafe advice like this given to me. I chose to disregard the advice.
Re: Dodgy advice given by my local supplier
No, nothing new in that at all.
We had to run new ovens and hobs with the earth off in new builds to get the moisture out them never mind just an element. Very common practice IME and nothing unsafe so long as you know what you’re doing.
K.
Re: Dodgy advice given by my local supplier
Had to do it in the past on cooker hob rings, still have to do it occasionally on oven fan elements, though they now come with silica gel bags so it’s less frequent.
Re: Dodgy advice given by my local supplier
I often have to do it on dishwashers that have flooded the base, You could heat it with a hair drier first can make a big difference although 1 is not low enough to trip so you could just fire it up as normal.
Re: Dodgy advice given by my local supplier
Dishwasher, I understand that and I have used the heat exhaust from the wet vac to dry it out.
Washing machine that you set it to spin then insulation restored after cleaning and change the brushes.
But oven?
Re: Dodgy advice given by my local supplier
I’d agree that a brand new element should be more than 1Meg though. It does not bode well for its life
Re: Dodgy advice given by my local supplier
It’s not unsafe if done in workshop/safe conditions, ,always depends on the individuals of course,you could always pop them in a fan oven on full for 30 minutes which might also do the trick.
Worked for Lux and we were advised/told how to “cook them up” to bring back into acceptable limits.
You can also measure the voltage to earth and see it drop as the moisture is expelled, odd occasion it doesn’t work however.
Are genuine not supplied in a sealed bag complete with silica gel pack inside.Re: Dodgy advice given by my local supplier
twicknix wrote:Dishwasher, I understand that and I have used the heat exhaust from the wet vac to dry it out.
That must take best part of forever to do. Just use a hair dryer. They are smaller, lighter and you can direct a hot air blast over windings and wiring much more effectively.
twicknix wrote:But oven?
Ovens are the worst offenders and yes disconnecting the earth a common practice. Likewise those flippin’ Gorenje made Bosch tumble dryer elements with the slatted vanes. Disconnect earth, run dryer for 5 mins, reconnect….sorted! 😉 😀
Re: Dodgy advice given by my local supplier
Martin wrote:
twicknix wrote:
Dishwasher, I understand that and I have used the heat exhaust from the wet vac to dry it out.That must take best part of forever to do. Just use a hair dryer. They are smaller, lighter and you can direct a hot air blast over windings and wiring much more effectively.
twicknix wrote:But oven?
The wet vac has a connection at the end that I simply connect the hose and use the crevice, it gives out a strong blast of hot air from the motor and it doesn’t take very long. You can easily snake the pipe inside the dishwasher even further.
Besides, why would a bald man like me want to carry a hair dryer? It would give my customer something to talk and joke about wouldn’t it?
Re: Dodgy advice given by my local supplier
spimps wrote:
Are genuine not supplied in a sealed bag complete with silica gel pack inside.some do and some don’t. Most of my Bosch elements doesn’t come with silica gel pack and it was not even in sealed bag. Not from where I collect my parts from Connect.
Only those that came via mail order came with sealed bag with silica gel pack like from Masterpart and Qualtex
Re: Dodgy advice given by my local supplier
I don’t expect suppliers would go to the trouble of keeping a dehumidifier running to keep damp out of absorbent elements whilst stored, I sometimes pop a small dehumidifier in the van to dry out stock that’s in there.
When not busy it’s worth checking stock for earth readings and if not ok run them with no earth to dry out and then when OK and cool bag them up sealed.With Lux we used to ensure when disconnecting earth to dry out element that no one was in the room at the same time!
I had a load of “allegedly” genuine hotpoint ew82 elements which were loose with not even spades protected, complained but they assured me they were genuine, really!!
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