Wilo Flumen OPTI-TR 20-1 Instrucciones De Instalación Y Funcionamiento página 45

Installation and operating instructions Wilo-Flumen OPTI-TR 20-1, 28-1, 30-1, 40-1 Wilo-Flumen EXCEL-TRE 20, 30, 40
Faults, causes and remedies
DANGER
Risk of fatal injury due to dangerous lone working practices!
Working in pump chambers and tight spaces as well as working where there is a danger
of falling is dangerous work. This work must not be carried out alone! A second person
must be present for safety reasons.
WARNING
No persons may remain in the working area of the mixer!
Persons may suffer (serious) injuries while the mixer is in operation! No persons may
therefore be present inside the working area. If persons should enter the mixer's working
area, deactivate the mixer and secure it against being switched on again by unauthorized
persons!
WARNING
The propeller blade has sharp edges!
Sharp edges can form on the propeller blades. There is a risk of limbs being severed. Wear
safety gloves to protect against cuts.
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.
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