General Category > Equipment and Software

How to use a Ranco 2-stage Temp Controller

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guido:
OK  The instructions seem easy enough.  I'm using a Ranco 2-Stage Temp Controller on a commercial 2-door lab fridge, which I'm trying to use as a fermenter.  The thing just stares at me.  I'm trying to cool to 65F and the ambient temp is 77F.  Everything seems plugged in the right way.  The fridge works.  Any suggestions.

klickitat jim:
Hmmm wish I was there to see it. Are you sure you have fridge plugged into the correct stage?

guido:

--- Quote from: klickitat jim on June 22, 2013, 06:48:01 PM ---Hmmm wish I was there to see it. Are you sure you have fridge plugged into the correct stage?

--- End quote ---

Yep, fridge is plugged into the S1 outlet and set up as C1 for cooling.

klickitat jim:
I wonder if they got the labels wrong. Maybe try swapping them.

Pinski:
What do you have the differential set at?
Does the temperature display show 77  or is that from another thermometer?
Do you have the heat stage set at a temperature well below the cooling stage so that you dont have a conflict?

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