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Questions about wafer thermostat

Discussion in 'Incubating & Hatching Eggs' started by sfoelee, Sep 6, 2009.

  1. sfoelee

    sfoelee In the Brooder

    Aug 3, 2008
    east bay,california
    I just bought a used bator and was told it was only used a couple of times. . Is there an easy way to test the wafer? I heard that the wafer thermostat is very reliable When the pilot light is on I hear a buzzing sound which may be the wafer thermostat right? My other Hovabator has always been quiet and has been in use for two years continuously. thanks for any help!

  2. Nemo

    Nemo Songster

    Jul 22, 2008
    N'rn Wisconsin
    I don't know what the buzzing is, but I would be more likely to guess that it is the heating unit. You can test that by taking the wafer out completely. With no wafer to click the switch to turn off the heat, it should run and run and run until you unplug it.

    To test the wafer, put it in and run the incubator to set the temperature. If it varies too much, then you could replace the wafer.

    It might have been used only a few times, but if it's too old than it's too old... The solder eventually cracks and the ether inside leaks out. It will still seem like it's working, but an old wafer will not react as quickly to temp changes, so the temp will range too widely.

    I had this trouble the first time I tried incubating last spring. I got an incubator from a guy who had it up in his garage a bunch of years, and he got it from a guy who had it up in *his* garage a bunch of years. I didn't know about the wafer getting old, and the temp went up to 107 a couple times and cooked most of my eggs.
  3. silkiechicken

    silkiechicken Staff PhD Premium Member

    Just see if it maintains the temperature, if it's a good wafer and hasn't been subject to extreme storage conditions, a wafer can last like a decade (stored and used indoors all year). Of cousre, if you don't know how it was stored, do keep it running and record highs and lows.

    I too would venture to guess the buzz is either the heater or perhaps the pilot light indicating on.
  4. sojono

    sojono In the Brooder

    Jul 25, 2009
    Don't ever store in attic it gets so hot it will cause wafer to burst. thats what happened to mine. bought 2 for 20 bucka including shipping.

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