Xylem GSSERVICE R2 Service Manual Submersible Pumps & Jet Pumps - Manual (Page 67)

Pump Runs But . . .
65
Little or no water delivered
Problem
Recommended Action
1. Pump or pipes not Fill pump completely with
completely primed. water through priming
opening (reprime pump).
a. Deep Well
system Control valve must
be set properly or system
will not pump. See Pressure
Control Valves.
2. Foot valve or end of suction a. Shallow Well system
pipe either not submerged Install vacuum gauge
or buried. See Checking Suction Lift.
b. Deep Well
system Physically check
well conditions.
Foot valve in well or line Replace foot valve if
check valve stuck closed. necessary. (Very high
vacuum, 22 inches or more.
see Checking Suction Lift.
3. Leaks on suction side of pump Pressurize system and
(Very common problem.) inspect.
TROUBLESHOO
TING