A/C water pump issue on 48 LRC

[hardshell46]

Hello all, just purchased this 1977 48LRC, and while bringing her back from Stuart FL, the A/C pump
started to act up. When we had all A/C off the pump would continue to run. So every time we needed heat or A/C I had to turn on the power switch in the engine room, and this was fine till I got back to New Bern. Then as soon as the ( l thought) the engine room cooled down,, everything started to work properly, well until today, hence the posting, and thoughts?

Tom

 

[Pascal]

You should have a box with relays aka triggers which will turn on the pump whenever one or more air con unit needs to come on.

Unless of course the relays were removed or bypassed and the pump connected directly to its breaker. It s ok to leave the pump on at all time, especially when you have four, five or six air cons as usually there will always be one running and the pump runs pretty much all the time. The downside is that if you loose flow for whatever reason the pump will then run dry…

 

[rwaldrop13]

You should have a box with relays aka triggers which will turn on the pump whenever one or more air con unit needs to come on.

Unless of course the relays were removed or bypassed and the pump connected directly to its breaker. It s ok to leave the pump on at all time, especially when you have four, five or six air cons as usually there will always be one running and the pump runs pretty much all the time. The downside is that if you loose flow for whatever reason the pump will then run dry…

The faulty (I can't name the manufacturer since they're suing me for expecting them to honor their warranty) AC unit I had aboard Pau Hana had pump relay issues and kept chattering the pump to the point that it burned 2 of them out. I consulted with local vendors and wound up running separate power supply with dedicated breakers for each pump, and just eliminating unit control. This worked much better and gave me better monitoring of sea strainers, as here in Fort Myers, my strainers could go from clean and flowing to clogged in mere hours. I was actually in the habit of shutting the AC's and pumps off when someone was docking/undocking next to me at low tide as the marina bottom was just that much silt. PM me if you want to hear about warranty fight. Even with Pau Hana gone, they still think I'm going to roll over for them.

 

[carolinacoast]

my box has 240v triacs. I keep a couple of extra ones in there too. they control the pump starting and stopping as pascal says.