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kerosene rayburn tripping electrics

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andrew

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Dec 22, 2011, 4:07:35 PM12/22/11
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I've just had a call from an old colleague, his central heating is tripping
its circuit soon after starting.

It's a 10 year old rayburn range and a pump. My guess it's something in the
oil burner ignition circuit but what chances a circulation pump would fail
with an earth leak?

Any other suggestions as to what to check, he's some 50 miles away so not
easy to advise from a distance.

The local rayburn/aga agents charge loads of dosh and tend only to replace
whole assemblies.

AJH

The Natural Philosopher

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Dec 22, 2011, 4:22:51 PM12/22/11
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andrew wrote:
> I've just had a call from an old colleague, his central heating is tripping
> its circuit soon after starting.
>
> It's a 10 year old rayburn range and a pump. My guess it's something in the
> oil burner ignition circuit but what chances a circulation pump would fail
> with an earth leak?
>
very high.

> Any other suggestions as to what to check, he's some 50 miles away so not
> easy to advise from a distance.
>
> The local rayburn/aga agents charge loads of dosh and tend only to replace
> whole assemblies.
>

id say almost certainl some pump or other.

I had a motor on the washing machine do this: stripped it down to bare
parts and all I could tell was somewhere in the armature was a 3k short
to the armature metal. No reason, no other symptoms. Just did it.


Find out where in the cyckle it does it..

on my system thermostat moves motorised valve - takes a second - then
valve starts pump - then delay another second, boiler fan fires up - two
seconds more then ignition cuts in. few more seconds and boiler should
go WUMPH


work out how far it gets.

Id hazard a bust motor in the valve, the pump or the boiler fan as
equally probably to the igniter.

isolating the lot and pissing with a resistance meter is a way to go.



> AJH

Jim K

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Dec 22, 2011, 4:25:16 PM12/22/11
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On Dec 22, 9:07 pm, andrew <n...@sylva.icuklive.co.uk> wrote:
> I've just had a call from an old colleague, his central heating is tripping
> its circuit soon after starting.
>
> It's a 10 year old rayburn range and a pump. My guess it's something in the
> oil burner ignition circuit

but once it's going that's all done with (til next ignition cycle)?

besides the oil lift/pressure pump, some/most oil burners (e.g Riello)
have a motorised "air shutter door" that moves during ignition/lit
process.

spose "how soon after starting/trying to start?" is the question? e.g.
does it get to the "woof" and start burning? if so for how long b4
tripping?

cheers
Jim K

Dave Liquorice

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Dec 22, 2011, 4:39:26 PM12/22/11
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On Thu, 22 Dec 2011 21:07:35 +0000, andrew wrote:

> I've just had a call from an old colleague, his central heating is
> tripping its circuit soon after starting.
>
> It's a 10 year old rayburn range and a pump. My guess it's something in
> the oil burner ignition circuit ...

"Rayburn" and "range" give me the impression that it's "an always on"
device, you light a wick with a match and there is a drip feed to the
burner. Rather than a pressure jet system boiler with spark ignition,
blown air supply and and oil pump. What is the actual type of burner?

> but what chances a circulation pump would fail with an earth leak?

Above zero...

--
Cheers
Dave.



Dave Liquorice

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Dec 22, 2011, 6:09:41 PM12/22/11
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On Thu, 22 Dec 2011 13:25:16 -0800 (PST), Jim K wrote:

> spose "how soon after starting/trying to start?" is the question? e.g.
> does it get to the "woof" and start burning? if so for how long b4
> tripping?

And, if pressure jet, are we talking about the MCB or RCD tripping or
the burner going into lock out? Much more information needed from
the OP.

--
Cheers
Dave.



The Natural Philosopher

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Dec 22, 2011, 7:28:37 PM12/22/11
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If it IS a range its purely a wick and gravity device with probably oil
modulation in there somewhere so its ONLY the pump or a motorised
valve..that can be doing it.

Oh.. the heatranger SEEM to be conventional boilers too..it camn be
'turned on and off' In fact is a thwacking great central heating boiler
wit a stove attached.

http://www.chaseheating.co.uk/rayburn_heatranger_480k_pj_oil_fired_range_cooker.asp

Interesting indeed!


harry

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Dec 23, 2011, 5:28:14 AM12/23/11
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On Dec 22, 9:39 pm, "Dave Liquorice"
Could never see the point of such things. They don't do any thing
well.

andrew

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Dec 23, 2011, 3:01:39 PM12/23/11
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I've asked for a blow by blow account but none provided so far.

In the meanwhile he has found a local firm that were supposed to have a look
this afternoon, I'll get back when I know more.

AJH

gri...@gmail.com

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Dec 24, 2011, 10:38:59 AM12/24/11
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On Fri, 23 Dec 2011 00:28:37 +0000, The Natural Philosopher
<t...@invalid.invalid> wrote:

>If it IS a range its purely a wick and gravity device with probably oil
>modulation in there somewhere so its ONLY the pump or a motorised
>valve..that can be doing it.

Not so. Plenty of Raeburns have a pressure-jet conversion on them.
Hateful things, too. A total bugger to work on, requiring the
dexterity of a chimp on speed and the elastic limbs of Rubber Man.

andrew

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Dec 24, 2011, 5:00:04 PM12/24/11
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andrew wrote:


>
> In the meanwhile he has found a local firm that were supposed to have a
> look this afternoon, I'll get back when I know more.

It was the circulation pump, which has now been taken out of circuit and at
least the kitchen is being heated, I warned him to watch out for
overheating the water.

AJH

bake...@gmail.com

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Feb 22, 2018, 5:06:00 AM2/22/18
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I see your problem was sorted by servicing the pump. great. If the blower starts but fails to ignite consider the fuel valve solenoid.(on top of the fuel pump). Mine caused an rcd trip . simple replacement with danfoss 071N0010.
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