Originally Posted by sneuman
I have a Marine
Air Systems A/C aboard an older boat
that is new to me. Experimenting with it, I find that I can get the pump primed and it will pump fine for about 10 minutes or so, after which time it trips the breaker and shuts off.
Any ideas on what might be going on? Thanks in advance.
Not a lot of information to go on there, for example, do you know if it EVER worked properly? There is a detail that is important.
You mention needing to "prime the pump." I assume you mean the seawater cooling
pump. In a proper installation
, this should never be needed. The pump should be below water
level, and there should be no high points in the plumbing
between the seacock and the pump. Even if it is not the cause of the blown breaker, a pump that losses prime will be an ongoing source of frustration with the system.
If the pump losses prime, or otherwise stops, the compressor
_should_ shut down on its internal high pressure switch, but if that switch is faulty, or if the breaker and/or wiring
is marginally sized the breaker might trip as the compresser power
draw goes up.
It is also possible that the cooling
circuit is clogged with debris or biogrowth.
It's a bit of a reach, but with no details onthe system, it's hard to say...