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I was sure my mothers freezer was faulty but major problem was to measure -18°C. At the same time I wanted to control my fermenting beer temperature so decided to combine the two and buy a temperature controller which would also double as a simple thermometer. I settled on one of these units and also a new thermostat.
Still waiting on the thermostat for freezer but the temperature controller has arrived. I was a little disappointed as I want one with two sets of contacts one for cool and one for heat but that was my mistake.
Job one was build it into a socket box to make it save to use and second was to test freezers, fridges and weather stations with temperature read outs to verify it was giving reasonable accurate readings and it was.
My guess was confirmed my mothers freezer just keep going down in temperature so turned it off again. But then I thought why not use the temperature controller at least on a temporary basis to control the freezer. Well one reason is it's then not controlling my beer temperature.
But although I can measure my freezers they both have inverter drives so switching on and off with little gap between is no problem. My mothers however is rather basic and it will need time to allow pressure to drop before switching back on again.
The instructions I put on my web site mainly so I will not lose them but it gives some options as to settings. "Slewing range of temperature" is one default is 2°C and I suppose this will alter the time before it switches back on. But also there is a delayed start up to 10 minutes I am guessing this is what I need to set to protect the motor.
But question is how long does it take for the pressure to drop what should be the settings?
Idea is simply tape the sensor onto roof of freezer compartment and run wire out of door until correct part arrives. But don't want to damage cut out by trying to restart while pressure is still in the pipes so any idea of delay required or temperature range with a non inverter freezer?
Still waiting on the thermostat for freezer but the temperature controller has arrived. I was a little disappointed as I want one with two sets of contacts one for cool and one for heat but that was my mistake.
Job one was build it into a socket box to make it save to use and second was to test freezers, fridges and weather stations with temperature read outs to verify it was giving reasonable accurate readings and it was.
My guess was confirmed my mothers freezer just keep going down in temperature so turned it off again. But then I thought why not use the temperature controller at least on a temporary basis to control the freezer. Well one reason is it's then not controlling my beer temperature.
But although I can measure my freezers they both have inverter drives so switching on and off with little gap between is no problem. My mothers however is rather basic and it will need time to allow pressure to drop before switching back on again.
The instructions I put on my web site mainly so I will not lose them but it gives some options as to settings. "Slewing range of temperature" is one default is 2°C and I suppose this will alter the time before it switches back on. But also there is a delayed start up to 10 minutes I am guessing this is what I need to set to protect the motor.
But question is how long does it take for the pressure to drop what should be the settings?
Idea is simply tape the sensor onto roof of freezer compartment and run wire out of door until correct part arrives. But don't want to damage cut out by trying to restart while pressure is still in the pipes so any idea of delay required or temperature range with a non inverter freezer?