Wilo -Flumen OPTI-TR 22 Instrucciones De Instalación Y Funcionamiento página 42

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10 Faults, causes and remedies
42
Faults, causes and remedies
9. Attach and firmly tighten hexagon nuts. Max. tightening torque: see Appendix.
10.Lay connection cable in the cable bracket and close the cable bracket. CAUTION! Do
not tighten the cable bracket yet!
11.Align the connection cable: The connection cable should be slightly bent, it should not
be taut.
12.Close the cable brackets tightly.
▶ Mounting bracket is changed.
WARNING
Risk of injury from rotating propeller!
No persons are allowed to be present in the working area of the mixer. There is a risk of
injury!
• Secure and demarcate the working area.
• If there are no persons in the working area, activate the mixer.
• If persons enter the working area, switch off the mixer immediately.
Fault: The mixer does not start up
1. Mains connection interrupted or short-circuit/earth fault in the cable or motor winding.
⇒ Have the connection and motor checked by a qualified electrician and replaced if
necessary.
2. Tripping of fuses, of the motor protection switch or the monitoring device.
⇒ Have the connection and monitoring devices checked by a qualified electrician and
changed if necessary.
⇒ 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.
WILO SE 2021-10