How does the Vernatherm work?

[k650]

I have a Evinrude 60 -1996 which has a vernatherm, can someone tell me how it works compared to a regular theromstat?

Regards,
Fredrik

 

[Big Rush]

Re: How does the Vernatherm work?

Check this page...
http://www.vernatherm.com/thermal-actuators.htm

 

[F_R]

Re: How does the Vernatherm work?

That is a very informative thread. But the simple answer to the question is that a vernatherm IS a thermostat. Actually, it is the heart of a thermostat. The rest of a complete thermostat is the water valve that it actuates. With a conventional 'stat the water valve is part of it, vernatherm and valve all in one assembly. With a vernatherm application, the water valve is a separate part(s), opened by the vernatherm.

 

[yorab]

Re: How does the Vernatherm work?

I've read on different posts that if there is any question as to the condition of your vernatherm, the answer is always to replace it. While that does provide a warm, fuzzy, peace-of-mind feeling, it can cost $$, especially with the older models.

With information such as that listed on the vernatherm link provided by Big Rush, one could test a vernatherm before replacing, assuming that you could find the data for your specific vernatherm model number.

I've already purchased a new vernatherm for my rebuild but I would have tried to develop a procedure to test my old vernatherm (it probably has less than 20 hours on it) if I had that info before. I suppose that it would have required a method of controlling load, temp and piston motion. It may be complex, but it could be done.

 

[samo_ott]

Re: How does the Vernatherm work?

Hey. I have never heard of these before and now I have. Thanks for the thread.