Speck pumpen SUPI, Translation Of Original Operation Manual

Page: 70 / 84

Faults
28 EN 09|2017
Problem: No flow rate; motor turns
Possible cause Solution
Insufficient fluid level.  Check whether the water
level is min. 1 m above
the pump’s inlet section
during operation.
Non-return valve is blocked in
closed position.  Remove the power supply
and replace or repair the
valve.
Strainer basket is clogged.  Remove the power supply
and clean the strainer
basket in the inlet section.
Pump is damaged.  Remove the power
supply, disassemble the
pump, clean it and check
it. Replace damaged
parts.
Problem: Too low a flow rate in the pump.
Possible cause Solution
Incorrect direction of rotation
(3~).  Correct the direction of
rotation.
Drop in the water level is
greater than anticipated.  Check the drop during
operation and compare it
to the well and pump data.
 Install the pump deeper,
reduce the drop or replace
the pump with a smaller
model.
Valves in the pressure line are
partly closed/blocked.
 Maintain the valves.
Pressure line partly blocked
due to impurities.  Clean or replace pressure
line.
 Exchange the pump for a
model with a higher
pressure head.
Pump or non-return valve
blocked.  Repair or replace valve.