Publicidad
Idiomas disponibles
Idiomas disponibles
fective and replace the fuse if neces-
sary
• the single phase motor thermal cut-
out has tripped = this is reset auto-
matically once the motor has cooled
• Motor overload cutout has tripped
= check that the cables and relative
connections are not defective, check
that the pump is not blocked mechan-
ically, or whether the pump winding is
damaged (replace if necessary)
• Electrical power line damaged =
replace
• Pump blocked mechanically = clean
• Control device faulty = replace
• Control device blocked due to tripped
protection = remove causes and press
the Restart button
The pump stops after a short interval
of operation due to a tripped motor
protection device or electronic control
device
• Excessive current absorption = check
the operating condition of the pump
• if foreign bodies are present, block-
ing hydraulics = clean the hydraulic
components
• the single phase motor thermal cut-
out has tripped = this is reset auto-
matically once the motor has cooled;
check installation conditions
• thermal cutout protection setting or
fuses not suitable = check protection
devices with respect to rated current
of pump
• Power cable damaged = replace
component
• Motor damaged = replace component
• the pump does not restart = excessive
height of water column above elec-
tronic device (Figure 6)
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
• the electronic device is blocked = the
pump has problems with suction (dry
run protection tripped)
• For self-priming pumps only: the
liquid column above the check valve
on the delivery pipeline prevents
self-priming of the pump = drain the
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 pipelines
• Pump is not primed correctly = repeat
the "pump priming" procedure
• For self-priming pumps only: the in-
ternal valve has not closed = gradually
close a valve until there is a visible in-
crease 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
ENGLISH
21 21
Publicidad
