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On 14/08/2025 20:38, Timatmarford wrote:
On 14/08/2025 19:41, Andy Burns wrote:We had a CO detector in the kitchen, until recently, which would sound
Timatmarford wrote:
All I want to do is replace the batteries.
Presume they're not 10 year fixed life, then bin it, versions?
Pass. This is about year 6. I wonder if the powered retention is
electromagnetic and the retainer has become magnetised.
There is a clear instruction to insert a screwdriver in a slot and then
slide off the cover. The batteries are 9V.
off around 20 minutes _after_ we had finished grilling food.
It would then carry on for ages & ages before I could finally get it to
shut up.
I finally screwdrivered it with exteme prejudice, and ripped the leads
off its sounder.
Silence is golden.
On 14/08/2025 21:32, Timatmarford wrote:
On 14/08/2025 21:04, Scott wrote:
On Thu, 14 Aug 2025 20:59:33 +0100, Timatmarford <tim@marford.uk.com>
wrote:
On 14/08/2025 20:50, Andy Burns wrote:
Timatmarford wrote:
Andy Burns wrote:
Timatmarford wrote:
All I want to do is replace the batteries.
Presume they're not 10 year fixed life, then bin it, versions?
Pass. This is about year 6.
Mine lasted 12 years.
I wonder if the powered retention is electromagnetic and the retainer >>>>>> has become magnetised.
There is a clear instruction to insert a screwdriver in a slot and >>>>>> then slide off the cover. The batteries are 9V.
Mine had a stack of larger coin cells, all heat-shrinked together.
On closer examination, there is a label saying replace by 2029. I assume >>>> this relates to the detector itself rather than anything battery
related.>
Could it be that the 'instruction' is to allow you to separate the
unit from the base plate? When you say 'batteries' I cannot imagine
there would-a be more than one 9 volt battery. Are you sure the battery
is replaceable? Mine is not.
Umm. I'm fairly sure I have had at least one cover off and remember it
being difficult.
I'll try your sliding technique tomorrow having had a more thorough
search for the instructions. Manufacturers name would be helpful.
Nothing visible externally.
Some have a base plate screwed to the ceiling, and the whole alarm comes away from that - twist it or unclip it.
On Fri, 15 Aug 2025 19:42:35 +0100, Sam Plusnet <not@home.com> wrote:
On 14/08/2025 20:38, Timatmarford wrote:
On 14/08/2025 19:41, Andy Burns wrote:We had a CO detector in the kitchen, until recently, which would sound
Timatmarford wrote:
All I want to do is replace the batteries.
Presume they're not 10 year fixed life, then bin it, versions?
Pass. This is about year 6. I wonder if the powered retention is
electromagnetic and the retainer has become magnetised.
There is a clear instruction to insert a screwdriver in a slot and then
slide off the cover. The batteries are 9V.
off around 20 minutes _after_ we had finished grilling food.
It would then carry on for ages & ages before I could finally get it to
shut up.
I finally screwdrivered it with exteme prejudice, and ripped the leads
off its sounder.
Silence is golden.
A very resourceful initiative though personally I would have
investigated the source of the carbon monoxide since CO2 has the
ability to kill people.
On 21/08/2025 21:31, Scott wrote:
On Fri, 15 Aug 2025 19:42:35 +0100, Sam Plusnet <not@home.com> wrote:
On 14/08/2025 20:38, Timatmarford wrote:
On 14/08/2025 19:41, Andy Burns wrote:We had a CO detector in the kitchen, until recently, which would sound
Timatmarford wrote:
All I want to do is replace the batteries.
Presume they're not 10 year fixed life, then bin it, versions?
Pass. This is about year 6. I wonder if the powered retention is
electromagnetic and the retainer has become magnetised.
There is a clear instruction to insert a screwdriver in a slot and then >>>> slide off the cover. The batteries are 9V.
off around 20 minutes _after_ we had finished grilling food.
It would then carry on for ages & ages before I could finally get it to
shut up.
I finally screwdrivered it with exteme prejudice, and ripped the leads
off its sounder.
Silence is golden.
A very resourceful initiative though personally I would have
investigated the source of the carbon monoxide since CO2 has the
ability to kill people.
You assume there actually was CO present. I spent some effort to check
and found no evidence of it.
1. The only flames around (the grill) would be extinguished 20 minutes >before the alarm would sound.
2. We have another CO alarm (for the woodstove in the living room) and
on a number of occasions I moved that into the kitchen as a check - no
alarm from that one.
3. I would try & silence the bliddy alarm by taking it into a room in a >different part of the house and press & hold the shut off button. The
alarm would keep on sounding - despite now being nowhere near the
putative source of CO.
We had a CO detector in the kitchen, until recently, which would sound
off around 20 minutes _after_ we had finished grilling food.
It would then carry on for ages & ages before I could finally get it to
shut up.
I finally screwdrivered it with exteme prejudice, and ripped the leads
off its sounder.
Silence is golden.
Sam Plusnet <not@home.com> wrote:
We had a CO detector in the kitchen, until recently, which would sound
off around 20 minutes _after_ we had finished grilling food.
It would then carry on for ages & ages before I could finally get it to
shut up.
I finally screwdrivered it with exteme prejudice, and ripped the leads
off its sounder.
Silence is golden.
ItrCOs possible that your reluctant CO alarm worked not by measuring instantaneous levels of the gas, but the accumulated dose over perhaps 30
or 60 minutes, which is of course more dangerous than that of an transitory high reading.
You could have had a very high reading from the grilling process, which
when smoothed out over the integration period was nonetheless enough to trigger the warning, although by then was of no danger to you.
The long period of alarm sounding was possibly to this, and when the next integration period resulted in a level that was insufficient to trigger the alarm, it stopped soundingrCa