On Thursday, November 24th, 2011, at 00:30:53h +0000, Bill Wright wrote:
> Does anyone have any hard information about the cleaning of dust from
> ceiling-mounted ionisation smoke detectors?
How about some advice from Kentucky Injury Prevention and Research Center?
From <
http://www.kiprc.uky.EDU/Fire/satips.htm>
QUOTE
Cleaning your smoke alarms is also important. If the alarm vents or
sensor become clogged with dirt and dust the alarm will not work.
You should follow the manufacturer’s directions for cleaning each alarm.
In most cases you can use a vacuum cleaner to remove dirt and dust.
If you will be doing work near a smoke alarm that will produce a lot
of dust, such as sanding or installing drywall, cover the alarm with
a plastic bag.
Remove the bag as soon as you are finished with the work.
Never paint a smoke alarm - the paint can clog the vents.
UNQUOTE
And remember
"Photoelectric alarms are also less sensitive to steam from showers
and cooking food so they are the best choice for alarms that will
be installed near kitchens or bathrooms."