Flotec EVOTRONIC 350 Manual De Instrucciones página 28

ENGLISH
LINE
ELECTRIC
!
FLT.
RUN
FAULT
MODE
unplug the pump from power supply and
wait for the led LINE to shutdown.
The causes might be:
1. Wrong voltage : please check the
voltage in the system
2. excessive current absorption =>
please check the conditions of the
pump operation, if there are foreign
bodies obstructing the hydraulic,
clean the hydraulic.
3. damaged motor => check and subs-
titute the component
4. Problems on the electronic device,
or detected by the device such as:
overvoltage, undervoltage, wrong
communication between the display
and the pump => please check the
supply network, shut the device
down and restart it. If the problem
persists change the electronic
modules.
The pump starts up but does not deliver
liquid
• Pump is not primed => repeat the
"pump priming" procedure
• The pump takes in air => check the
liquid level, operation of the foot valve
and the suction pipeline
• The foot valve is blocked in the closed
position => replace or clean the valve
• For self-priming pumps only: The
liquid column above the check valve
on the delivery pipeline prevents
self-priming of the pump => drain the
28 28
SET
ESC
delivery pipeline Check that check
valve does not retain liquid in the
delivery pipeline Repeat the start-up
procedure.
Pump performance is reduced
• Pipelines obstructed => check pipe-
lines
• Pump is not primed correctly => re-
peat the "pump priming" procedure
• the given set point or the set pressure
are low => adjust the pressure switch
• The internal valve has not closed =>
gradually close a valve until there is
a visible increase in pressure or flow.
Then open the valve gradually until the
required flow rate is reached.
Pump performance is unstable
• Pump suction pressure too low or
cavitation => check the pump inlet
conditions
• Suction pipe is partially obstructed
with impurities => clean the suction
pipe
• Leak from suction pipe => repair or
replace suction pipe
• air in suction pipe => bleed the suc-
tion pipe, repeat the "pump priming"
instructions
• The differential pressure inside the
pump is too low => gradually close a
valve until delivery pressure stabilizes
and the noise level is reduced
The pump rotates in the opposite direc-
tion when shut down
• Foot valve or check valve defective or
blocked in the open position => re-
move and clean or replace the valves
• Leak from suction pipe => remove and
repair suction pipe