We have a (Lagoon factory installed in April 2010) Whale Gulper 220 diaphram pump for our showers and sinks. Recently, however, one of the pumps is not working, or at least not removing the water
. We ran a number of checks...
- The pump and switch work fine
- On removing the exhaust
hose (after the pump) and running the pump, there is no water
coming out of the pump. So the problem is not the exhaust
- On removing the intake hose, we were able to move air through the hose easily. So there is no blockage in the intake hose.
- On removing the diaphram cap, the diaphram itself appears to be operating correctly and there is no damage (that we can see anyway) to the diaphram.
- Similarly, the two one-way valves inside the diaphram cap appear to be undamaged and operating correctly.
We are yet to force water up the intake hose to try to prime the pump, but all the material suggests this should be a self-priming pump.