The idea is to have a double oven housed in a cabinet behind a pair of pocket doors. The ovens may only operate when both cabinet pocket doors are open and fully retracted. Each of the doors need to close a contact that will send a signal to a relay that will turn on the 240v circuit to the oven. When one or both of the doors are closed the power to the oven turns off.

Does anyone know of a contact & relay system that would be appropriate for this application?

 

A couple of microswitchs in series?

Regards

cww

 

You can do it yourself with a simple reed switch and magnet application.

Almeg Controls makes a dishwasher door switch that consists of a magnet in a support and sensor on the dishwasher door. Simply a reed activated by a magnet. This can be connected using a simple cube relay with switch protection connected is series to two doors or use the dual alarm relay that sends a safe low voltage signal out and has two 240V 8A relates that can be connected in series as well. See alarm manual at: http://www.almegcontrols.com/operating_manual.htm

Thanks
Bob Hogg

 

Use an appropriately sized contactor with 24 volt AC coil and transformer and you can use most any door switches.

Also suggest you check that your fire insurance policy is in force in the event somebody shuts the doors before the oven has cooled down, or with the oven on. Local building code folks will probably have some reservations about this scheme.

I wouldn't think of it!

Dave McConnell

 

My point was, that this doesn't seem like a complex problem as stated. Now we actually need a controls system for the real world, with door switches, latches, (to ensure they remain open in use) and a thermoswitch to allow the doors to close only when exit air from the
oven is below say 120 degrees F. If the doors were latched open when oven power was on OR the temp is excessive and power could not be applied unless the doors were open, it could be operated succesfully. But that still doesn;t mean it's safe from being cheated, etc. My guess is that, if the local inspector happened to grasp what you were doing, (50-50 chance) he wouldn't ever approve it regardless of how you do it. Now, if you were a well connected builder, it would pass with flying colors, again regardless of how you do it.

Alas, most codes require the manufacturer's clearances whether the unit is operating or not and it would thus be in violation. But, it's interesting to think about.

Regards

cww

 

Use a "maglock" used in security applications to lock entrance doors. 24 Vac or 12vdc units are available. Use a thermo switch to turn power on and hold the doors open. You will want to make sure the oven does not get power unless the doors are all the way open and still there could be trouble.