TPY
R
35
Problem
Possible cause
Possible solution
Checkpoints
Pump
supplies
insufficient
capacity
and/or
pressure
Pump sucks air
because of leakage
in the suction line
Repair the leakage
Too little water
consumption so
air bubbles clog
up in the pump
Make sure the
consumption
increases or use
a smaller pump
The diameter of
the suction line is
too small
Increase the
diameter of the
suction line
Capacity of water
meter in the supply
line is too small
Increase the capacity
of the water meter
Foot valve
blocked
Clean the foot
valve
The impeller or
the diffuser is
blocked
Clean the inside
of the pump
O
O-ring between
impeller and
diffuser is gone
O
Replace the
O-rings
TPY
R
36
Problem
Possible cause
Possible solution
Checkpoints
Pump
supplies
insufficient
capacity
and/or
pressure
O
O-ring not
resistant to
the medium
to be pumped
O
Replace the
O-rings
