Wilo SiBoost-Smart-2 Helix V605 Notice De Montage Et De Mise En Service page 60

English
Fault
Switching frequency too high or flutte-
ring
Pump(s) not stable and/or make unusual
noises
Pump(s) not stable and/or make unusual
noises
Motor or pump get too warm
Current consumption too high
Motor protection switch triggers
44
Cause
Inlet pipe incorrectly installed
Check valve closed at pressure sensor
No diaphragm pressure vessel present
(optional or accessory)
Supply pressure at existing diaphragm
pressure vessel incorrect
Valve on existing diaphragm pressure
vessel closed
Existing diaphragm pressure vessel
defective
Set switching difference too small
Major fluctuations in intake pressure
Intake pipe blocked or shut off
Nominal diameter of inlet pipe too small Check the inlet pipe, increase the cross-
Inlet pipe incorrectly installed
Air in inlet
Air in the pump
Impellers blocked
Volume flow too large
Direction of motor rotation false
Mains voltage: a phase is missing
Pump not adequately secured to base
frame
Bearing damage
Air in inlet
Gate valve in system closed or not suf-
ficiently open
Impellers blocked
Non-return valve blocked
Check valve closed at pressure sensor
Switch-off point set too high
Bearing damage
Turn-to-turn fault in motor
Mains voltage: a phase is missing
Non-return valve leaking
Volume flow too large
Turn-to-turn fault in motor
Mains voltage: a phase is missing
Non-return valve defective
Remedy
Check inlet pipe, if necessary change
pipe guide
Inspect, open check valve if necessary
Retrofit a diaphragm pressure vessel
Check supply pressure and correct if
necessary
Check valve and open if necessary
Check the diaphragm pressure vessel
and replace if necessary
Check setting and correct if necessary
Check intake pressure, if necessary take
measures to stabilise supply pressure
(e.g. pressure reducer)
Check inlet pipe, if necessary remove
blockage or open check valve
section for the inlet pipe if necessary
Check inlet pipe, if necessary change
pipe guide
Check, if necessary seal pipe. Vent
pumps
Vent pump, check suction line for leaks
and seal if necessary
Check pump, if necessary replace or have
repaired
Check pump data and default values and
correct if necessary
Check direction of rotation and correct
by changing over phases if necessary
Check fuses, cables and connections
Check fixation, tighten fastening screws
if necessary
Check pump/motor, replace if necessary
or have repaired
Check, if necessary seal pipe. Vent
pumps
Check, open the check valve completely
if necessary
Check pump, if necessary replace or have
repaired
Check, if necessary remove blockage or
replace non-return valve
Inspect, open check valve if necessary
Check setting and correct if necessary
Check pump/motor, replace if necessary
or have repaired
Check, if necessary replace motor or
have repaired
Check fuses, cables and connections
Check, if necessary replace seal or
replace non-return valve
Check pump data and default values and
correct if necessary
Check, if necessary replace motor or
have repaired
Check fuses, cables and connections
Check, if necessary replace non-return
valve
WILO SE 04/2013