Faults, causes and remedies en
Installation and operating instructions Wilo-EMU FA + FK 17.1, FK 202, FK 34, FK 42 41
WARNING
Sharp edges on the impeller and suction port
Sharp edges can form on the impeller and suction port. There is danger of limbs be-
ing cut-off! Protective gloves must be worn to protect from cuts.
Fault: Pump is not starting
1. Electricity supply interrupted or short-circuit/earth connection in the cable or mo-
tor winding.
⇒ Have the connection and motor checked by a qualified electrician and replace
if necessary.
2. Tripping of fuses, of the motor protection switch or the monitoring equipment
⇒ Have the connection and the monitoring equipment checked by a qualified
electrician and change it if necessary.
⇒ Have the motor protection switches and fuses installed and adjusted accord-
ing to the technical specifications by a qualified electrician and reset monitor-
ing equipment.
⇒ Check the impeller to make sure that it runs smoothly, clean the hydraulics if
necessary.
3. The sealing chamber control (optional) has interrupted the electric circuit (connec-
tion-related)
⇒ See “Fault: Mechanical seal leakage, sealing chamber control reports a fault
and switches the pump off”.
Fault: Pump starts up, motor protection trips after short period
1. Motor protection switch set incorrectly.
⇒ Have the adjustment of the trigger checked and corrected by a qualified elec-
trician.
2. Increased power consumption due to major voltage drop.
⇒ Have the voltage of individual phases checked by a qualified electrician. Con-
tact the electricity distribution network.
3. There are only two phases at the connection.
⇒ Have the connection checked and corrected by a qualified electrician.
4. Excessive differences in voltage between the phases.
⇒ Have the voltage of individual phases checked by a qualified electrician. Con-
tact the electricity distribution network.
5. Incorrect direction of rotation.
⇒ Have the connection corrected by a qualified electrician.
6. Increased power consumption through jammed hydraulics.
⇒ Clean the hydraulics and check the inlet.
7. The density of the fluid is too high.
⇒ Contact customer service.
Fault: Pump runs, there is no volume flow
1. There is no fluid.
⇒ Check the inlet, open all gate valves.
2. Inlet clogged.
⇒ Check the inlet and remove clogging.
3. Hydraulics jammed.
⇒ Clean the hydraulics.
4. Pipe system on the pressure side or pressure hose clogged.
⇒ Remove clogging and replace the damaged components if necessary.
5. Intermittent operation.
⇒ Check the switching system.
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