I've a Beko condensing tumble dryer that trips the socket circuit RCD (labelled 80A 30mA) only under certain circumstances - always at what seems to be the end of a cycle (in the sense that the clothes are always dry), and only after it hasn't been used in a while (like at the moment, when most drying is done on the line).
Resetting the RCD is fine.
Any idea of the cause/solution, and safety issues?
That last bit suggests damp inside the unit somewhere, bit you would have thought that it would trigger at the beginning of the cycle, rather than at the end?
So it's an intermittent / associated with a particular phase in the machines cycle.
I'm assuming that a condenser - dryer might be at it's dampest near the end of it's cycle, most water in the catch reservoir (if it's that type)? Water leaking out of that (from a small split) when pumping? (Aren't there some condenser - dryers that can discharge their condensate into a drain like a WM?).
The only machine tripping I have had was the WM but that was as soon as you powered it up and because of carbon brush deposits built up around the motor.
BeKo tumble dryer you say ... ? ;-(
Cheers, T i m
We had the same problem with our Beko last November, where it tripped at the end of the cycle when it was cooling down. I traced the problem to the interference filter. This can be found as the first component after the mains lead enters the tumble drier, but comes /before/ the mains switch, so even turning the switch off at the end of the cycle did not prevent the RCD tripping.
I purchased a new filter and fitted it, which immediately solved the RCD tripping problem. Filter obtained from Spares-2-Go via Amazon The appearance of the filter might differ from what you have or need as your model Beko might be different from mine.
Smashing, thanks, I'll take a look.
Very droll :-)
It's supposedly 'safe' in a general sense. At the end of the cycle it seems, if anything, at its driest. Open it up mid-cycle and a cloud of steam comes out. Anyhoo, I'll follow up on Jeff's suggestion first.
Tripping at switchoff happens if the element (or other leaky bit) has its neutral switched off before its live. Element is most likely - test its insulation.
NT
snipped-for-privacy@gmail.com formulated on Wednesday :
That may need a meggar to be certain to find the point of leakage.
A lot of such faults can be picked up with just a multimeter on resistance range. If not the mains itself can provide the HV - only suitable for folks that can do that safely of course. A megger is quicker/easier, but not actually needed.
NT
I've found that a few kohms is enough to trip. Not megohms.
30mA at 240v implies 80k ohms. So as long as you cann detcet less than that, you are OKIn my case a motors showed around 3kohm with some sort of internal winding to armature short
I'll take a look when I open it up - thanks.
These days Beko are not the dogs they used to be.I'd suspect water or some kind of motor issue myself. Can you measure anything if you whip out the plug and test the leakage between the pins before then after the trip Brian
Static discharge at end of drying cycle, as drum rotates and static filled clothes discharge to drum ?
Add fabric sheet and retest on next load. The fabric sheet being a depleter of static charge.
I stopped using fabric sheets here some years ago, and there is *plenty* of static when I take out a load now :-)
Paul
Lots of stuff plugged in and on standby (that one RCD covers about 50 sockets), but nothing major operating at the time of the trip, from memory.
Thanks, I did think that, but there's no noticeable static. And I don't like perfumed clothes.
On 23 Jul 2020 at 07:55:32 BST, ""Brian Gaff \"
Insulation breakdown tends to be very nonlinear with voltage. Multimeters pick up a lot of failures but not all.
NT
snipped-for-privacy@gmail.com used his keyboard to write :
Correct!
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