[C320-list] Head Shower Pump

[Irving Grunes]

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