I've got a Shurflo 4000 model 804-009-01
and over the last few months, I've noticed that the pump will kick on to pressurize the collection tank while no water
is being used anywhere on the boat. So, there's probably a leak either on the pump/tank or in a fresh water
line. I don't find any water where it shouldn't be along the fresh water lines, so my guess is the pump/collector. Has anyone else had this problem with a similar setup and how did you remedy the problem?
The second issue is that the pump won't consistently pull water up from the lower of my 3 water tanks
and the pump just runs and runs until I turn on one of the higher placed tanks
. All three tanks feed into a piece of stainless which has two outputs, one to the hand pumps and the other to the Shurflo system. I've taken off the feed and vent on the lower tank and blown air through each hose and none of them feel restricted. To get the lower tank to feed water, I have to turn on a higher tank until I see water backflowing into the lower tank. I assume then that there is no air trapped between the tank and the stainless flow control piece. Once I turn on the faucet, the water will run nicely for about 5 mins, then the pitch
of the pump motor
changes to a higher note and the water flow eventually dwindles down to nothing.
Any observations, instructions or suggestions would be greatly appreciated!