Wilo TR/E 216 Serie Instrucciones De Instalación Y Funcionamiento página 42

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Faults, causes and remedies
⇒ Have the motor protection switch and fuses installed or set according to the tech-
nical specifications; reset the monitoring devices.
⇒ Check that propeller rotates easily, clean propeller and mechanical seal if required.
3. The sealing chamber control (optional) has interrupted the electric circuit (connection-
related).
⇒ See "Fault: Mechanical seal leakage, pre-chamber/sealing chamber control reports
a fault and switches the mixer off"
Fault: Mixer starts up, motor protection trips after short period
1. The motor protection switch is incorrectly set.
⇒ Have the setting of the trigger checked by a qualified electrician and trimmed.
2. Increased current consumption due to major voltage drop.
⇒ Have the tension values of the individual phases checked by a qualified electrician.
Consult the power supply operator.
3. Only two phases present on the connection.
⇒ Have the connection checked and trimmed by a qualified electrician.
4. Voltage differences between the phases are too great.
⇒ Have the tension values of the individual phases checked by a qualified electrician.
Consult the power supply operator.
5. Incorrect direction of rotation.
⇒ Have the connection trimmed by a qualified electrician.
6. Increased current consumption due to clogging.
⇒ Clean propeller and mechanical seal.
⇒ Check the pre-treatment.
7. Density of the fluid is too high.
⇒ Check unit configuration.
⇒ Contact customer service.
Fault: Mixer runs but system parameters are not achieved
1. Propeller clogged.
⇒ Clean propeller.
⇒ Check the pre-treatment.
2. Incorrect direction of rotation.
⇒ Have the connection trimmed by a qualified electrician.
3. Signs of wear on propeller.
⇒ Inspect propeller and replace if necessary.
4. Only two phases present on the connection.
⇒ Have the connection checked and trimmed by a qualified electrician.
Fault: Mixer does not run smoothly and is noisy
1. Impermissible duty point.
⇒ Check fluid density and viscosity.
⇒ Inspect system configuration, contact customer service.
2. Propeller clogged.
⇒ Clean propeller and mechanical seal.
⇒ Check the pre-treatment.
3. Only two phases present on the connection.
⇒ Have the connection checked and trimmed by a qualified electrician.
4. Incorrect direction of rotation.
WILO SE 2021-10