[VAC] PAR Pumping but no flow

[John Leggett <pklhead2@xxxxxxxxx>]

Hi folks,
We got the new polyethylene fresh water tank installed
and gave the PAR/Jabsco water pump our first test. 
The pump runs fine, but we got no flow!  There's a
clear inline filter between the tank and pump, but I
don't see any flow.

Is there anything you have to do to prime this kind of
diaphram pump?  It behaves like we've got air trapped
in the line.  The tank's about half full so I would
think we've got plenty of head for this pump.

Any ideas would be appreciated.

John Leggett
1968 Safari
WBCCI #1154