[C320-list] Head Shower Pump

[Scott Thompson]

Look for a less than perfect seal where the filter mounts.  This caused 
me to have similar symptoms two years ago.  A small air leak was letting 
just enough air in on the suction side to prevent the pump from priming. 
  Tightening the filter cover solved the problem.

The antisiphon loop is on the output side, in the medicine cabinet, on 
my boat.  It's right next to the one for the head.  I doubt if this is 
the problem.

Irving Grunes wrote:
> Hi,
> Was at Isle of Wight today and tried to empty the shower sump and fridge
> sump.
> 
> Pump motor runs, filter is clean, I have blown the intake hose and it is
> clean.
> And I have moved the two way valve in each direction.
> 
> I have poured water into both sumps and just wanted to clear any residual
> antifreeze that may be in the system.
> 
> But pump does not suck out either of the sumps.
> 
> Is there something that has to be done to the anti-siphon loop for the pump?
> 
> If so where is it and how do you reach it and then what do you do????
> 
> Irv Grunes
> #851