ac unit on 2005 Marlin

[NikM820]

My ac stopped pumping water and hence is not cooling. I went to trouble shoot it but the part numbers are unreadable on the waters pump. Anyone know the model number, or where to start? Obviously I made sure there was no plugs in the line. How many years are these units good for, is it about time for replacement anyway? I took it apart and everything looks normal. Never had an issue with it losing its prime before but i guess I should have started there. However, im still interested in the ac water pump part number if anyone has it.
Thanks
Nick

 

[Tuna Man]

Start with the simple thingds and check the strainer (about a foot away from the ac pump on my boat). I no not know the model number of mine but I would email Grady, I bet you get an answer right away. My 120 volt air conditioning pump is a Dometic similar to the red one on this website:

http://www.dometic.com/enus/Americas/US ... taid=90294

 

[ahill]

If your unit is a Dometic the mfr. of the pump is not Dometic.
Boatowners Warehouse offers the same pump Dometic brands for a lot less $.
My pump was installed in 2006. Started making a lot of noise in 2009.
Turns out the impeller system is isolated from water flow and runs off a magnet spinning on the pump shaft.
The hex key that holds the magnet to the shaft had loosened. I added some locktite, refastened it and haven't had a problem since.
If checking electrical conections, cleaning the filter and opening the ac intake seacock doesn't solve the problem look to the impeller.

 

[bhemi]

March is the brand name of the most common 120 volt pumps. They are pretty much fool proof. Check your inlet and power to the pump before you blame a failed pump. Testing the pump is easy, take some 120 house wire and put a plug on it then temporarily attach it to the pump. Stick the inlet side into a bucket of water. Take the normal precautions so you don't electrocute yourself.

Lots on eBay. http://www.ebay.com/itm/MARCH-PUMP-LC-3 ... ar&vxp=mtr

 

[offshore]

u might have air lock

 

[NikM820]

It was just an air lock. Should have looked at the simplest option first. At least I know where to get a new one now though.
Thanks

Nick