Wilo EMU KS Serie Instrucciones De Instalación Y Funcionamiento página 44

English
• Always have a second person on hand to ensure that
the product has been switched off for safety.
• Secure moving parts to prevent injury.
• Unsanctioned changes to the product are made at the
operator's own risk and release the manufacturer from
any warranty obligations.
9.0.1 Fault: The unit will not start
1 Electricity supply interrupted, short circuit or earth
fault in the cable or motor windings
• Have the motor and wires checked by a specialist
and replaced if necessary.
2 Fuses, the motor protection switch and/or monitoring
devices are triggered
• Have a specialist inspect the connections and cor-
rect them as necessary.
• Have the motor protection switches and fuses
installed or adjusted according to the technical spec-
ifications, and reset monitoring equipment.
• Check that the impeller/propeller runs smoothly.
Clean or free it as necessary.
3 The moisture sensors (optional) have interrupted the
power circuit (operator-related)
• See fault: Mechanical shaft seal leak, moisture sen-
sors report a fault or shut down the unit.
9.0.2 Fault: The unit starts, but the motor protection
switch triggers shortly after start-up
1 The thermal trigger on the motor protection switch is
incorrectly set
• Have a specialist compare the setting of the trigger
with the technical specifications and correct if nec-
essary.
2 Increased power consumption due to major voltage
drop
• Have an electrician check the voltage on each phase
and rewire if necessary.
3 Two-phase operation
• Have a specialist inspect the connection and correct
it as necessary.
4 Excessive voltage differences on the three phases
• Have a specialist inspect the connection and the
switching system and correct it as necessary.
5 Incorrect direction of rotation
• Swap the two phases from the mains supply.
6 Impeller/propeller impeded by adhesive material, block-
ages and/or solid matter, increased current consump-
tion
• Switch off the unit, secure it against being switched
on again, free the impeller/propeller or clean the
intake port.
7 The pumped fluid is too dense
• Contact the manufacturer.
9.0.3 Fault: Unit runs but does not pump
1 No pumped fluid
• Open the container intake or sliders.
2 Intake blocked
• Clean the intake, slider, intake port or intake strainer.
3 Impeller/propeller blocked or obstructed
• Switch off the unit, secure it against being switched
on again and free the impeller/propeller.
4 Defective hose or pipeline
• Replace defective parts.
5 Intermittent operation
44
• Check the control panel.
9.0.4 Fault: The unit runs, but not at the stated operating
levels
1 Intake blocked
• Clean the intake, slider, intake port or intake strainer
2 Slider in the discharge pipe closed
• Fully open the slider
3 Impeller/propeller blocked or obstructed
• Switch off the unit, secure it against being switched
on again and free the impeller/propeller
4 Incorrect direction of rotation
• Replace two phases on the mains supply
5 Air in the system
• Check the pipelines, pressure shroud and/or hydrau-
lics, and bleed if necessary
6 Unit is pumping against excessive pressure
• Check the slider in the discharge pipe and open it
completely if necessary, use a different impeller or
contact the factory
7 Signs of wear
• Replace worn parts
8 Defective hose or pipeline
• Replace defective parts
9 Inadmissible levels of gas in the pumped liquid
• Contact the factory
10 Two-phase operation
• Have a specialist inspect the connection and correct
it as necessary
11 Excessive decrease in the water table during operation
• Check the supply and capacity of the system, and
inspect the level control settings and functionality
9.0.5 Fault: The unit does not run smoothly and is noisy
1 Unit is running in an inadmissible operation range
• Check the operational data of the unit and correct if
necessary and/or adjust the operating conditions
2 The intake port, strainer and/or impeller/propeller is
blocked
• Clean the intake port, strainer and/or impeller/pro-
peller
3 The impeller is impeded
• Switch off the unit, secure it against being switched
on again and free the impeller
4 Inadmissible levels of gas in the pumped liquid
• Contact the factory
5 Two-phase operation
• Have a specialist inspect the connection and correct
it as necessary
6 Incorrect direction of rotation
• Replace two phases on the mains supply
7 Signs of wear
• Replace worn parts
8 Defective motor bearing
• Contact the factory
9 The unit is installed under mechanical strain
• Check the installation, use rubber spacers if neces-
sary
9.0.6 Fault: Mechanical shaft seal leak, moisture sensors
report a fault or shut down the unit
(Moisture sensor monitoring is optional, and is not
available for all types. For more details, see the order
confirmation or the electrical connection plan.)
WILO SE 05/2011 V4.1WE