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dunny123
02-08-2008, 07:52 PM
Hi i know grazzlin do a 24hour timer and every white switch is 15mins.
But what i am after is a timer with minutes an seconds.
So for instants i can set a machine to run for 20mins and defrost for 30seconds,and repeat this.
Do such timers exist?

chemi-cool
02-08-2008, 08:10 PM
You will need a microprocessor-based device with a change over contact that will operate two relays, one for the defrost and another one for cooling through a thermostat contacts.

BTW, its grasslin and now it called Itermatic.

philfridge
02-08-2008, 08:12 PM
;) Grasslin you mean try these
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=retrieveTfg&tfgSearch=Y&N=4294954373&searchTerm=Electronic%20Time%20Switches

dunny123
02-08-2008, 08:19 PM
Can you expain a bit more please,also where can i get these?
Thanks

Brian_UK
02-08-2008, 11:01 PM
I think that Philfridge has given you the address :)

dougdotcom
02-08-2008, 11:42 PM
Hi, have you tried Rs Electronics.?

dougdotcom
02-08-2008, 11:44 PM
mmmm silly me you already have, egnore me today.

dunny123
03-08-2008, 08:40 AM
Thanks for posting the link for rs,iv been on that site but carnt seem to find a timer that will do minutes and seconds,they are all 24hour timers where the diles are 15mins.
I will give rs a ring in the morning to explain what im after,thanks for your help.

old_timer
20-08-2008, 02:12 PM
I'm an Ex-fridgie and new to air con but I have never seen so many dead timers, Grasslin timers, can't be programmed and won't hold information. I suspect the batteries are dying. Is anyone else having the same problem??