[C320-list] The ubiquitous shower sump problem

[clburti at gmail.com]

David,

The earlier versions did not have the Y-valve, but in none of them did the shower pump into the bilge, just the reefer. Later Catalina added the Y-valve and allowed the reefer to be pumped as well.


If your pump is functioning, you have a blockage.


No guesses as to the broken pump. was it hooked up to anything electrical or plumbing?


CB,

Commitment, #867






Sent from Windows Mail





From: David MacKinnon
Sent: ‎Sunday‎, ‎April‎ ‎19‎, ‎2015 ‎11‎:‎43‎ ‎PM
To: c320-list at lists.catalina320.com





Hi,

Much has been said about issues with shower sumps and, I believe, I have read them all but I still not able to find out exactly why our shower sump is not draining (at least without pulling everything apart, which is what I am about to do).

For clarification our hull is an early model (#162) but it does not have a Y valve under the head sink to change between the ice box and the shower sump as has been mentioned in may previous posts.  It does have, what looks like, a “relatively” new replacement pump under the head sink which then pumps to what looks like an (old) one way valve before the hose goes upwards to an anti-syphon valve (located in the rear cabin closet) and then back down to the sea cock, which is next to sea cock for the sink.  We operate the shower sump by switching on the water pump toggle switch on the main panel and then the shower switch in the head & everything seems to operate fine except the sump does not appear to drain any water. The fact that the drain goes to an underwater sea cock, instead of an overboard sea cock, makes me wonder whether the replacement pump may not be strong enough to overcome the combined effects of the design setup & am considering installing a more powerful Gulper pump instead.

From everything that I have read on the forum, the lack of a Y valve and the fact that the shower sump goes out through a sea cock, and not into the bilge, seems unusual. Can someone tell me whether this was an option on some boats?  If so, where did the ice box drain to as I cannot find a location for any overflow or any way to pump it overboard.  When we recently renewed our sole I did find, however, an old broken pump in the cavity under the inspection panel forward of the engine bay so I am wondering whether this was part of that.  The PO had had the inspection panel covered over with the sole!

So I am trying to solve a couple of problems: why is the pump not pumping out the shower sump and where is the icebox draining to.  If I can understand the setup better, I may be able to resolve the problems before I start to pull everything apart.  Any help would be greatly appreciated.

Cheers,

David

David MacKinnon
Figment
Hull#162
Brisbane, Australia