On 11/07/2018 07:59, Adrian Brentnall wrote:
On 11/07/2018 06:58, Chris Hogg wrote:
On Tue, 10 Jul 2018 23:02:08 +0100, Charlie Pridham
wrote:

OK, this is nothing to do with gardening really but we have here at the
nursery a thermal transfer printer for plant labels, and very good it is
to - except if there is a power failure. A normal inkjet (along with the
computer) when a power cut happens, stay off when power is restored,
this thermal transfer printer tries to come back on, jams and burns one
of the spool motors out and costs us about £100 to sort out. Now on the
third event this year alone so getting a bit fed up, I know the obvious
answer is to simply shut it down each time after use, but sadly I often
forgetÂ* -Â* so is there any gizzmo that can be introduced between the
plug and the printer that would if the power is interrupted stay off
until I switch it back on? and if so what an earth is it called!!?


It sounds to me like you want either an uninterruptible power supply
(UPS), to keep it going while the mains is off (they're battery-based
and much used for computers etc; lots here
https://tinyurl.com/ycecy8x4 , choose your wattage and price), or you
want a non-latching relay in the circuit. RS do them that I assume fit
in your fuse box in the appropriate circuit like any other MCB
https://tinyurl.com/y8cr6dc5. More here but most would require making
up some circuitry in a little box https://tinyurl.com/y9o3szt4

But IANA electrician, and someone who knows what they're talking about
will probably be along soon!

Probably the easiest 'ready-made' solution is one of those control boxes
like you see on the side of workshop equipment - has a red button and a
green button.

To start the thing running, you press the green button, to stop you
press the red one. The clever bit is that, even after the green button
has been pressed, a power outage / restore won't cause the equipment to
re-start _until_ the green button has been pressed again...

If you take a look in eBay - search for 'no volt release switch' -
there's a range of options - from a fiver up to 20 quid...
Just wire it in the mains lead supplying the thermal printer, put it in
a little box if you're feeling fancy..


That sounds Ideal, Thanks to all who have responded

--
Charlie Pridham
Gardening in Cornwall
www.roselandhouse.co.uk