Re: I Quit

"Bob La Londe"  wrote in message news:v69l0s$3e65q$1@dont-email.me...
If I could get all the tiny little losses eliminated I'd be tempted to
use both tanks for air storage, and just periodically switch which
compressor fills them. Then even if a compressor failed it would carry
the air seals for hours.
I also considered some sort of auto backup.  The easy way would be to
set the backup compressor to switch on at a lower pressure, but there
are a number of small issues that could cause both compressors to run at
the same time.  That's power I do not always have.  ...
Bob La Londe
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The circuit in a Quick Recovery electric water heater does almost what you want. The upper thermostat is double throw, when cold it selects the upper element until the top part of the tank reaches the set temperature, then switches power to the lower element and its on/off thermostat to heat the whole tank. For two air compressors you would need a double throw pressure switch for the lower setting.