Wilo -Flumen OPTI-TR 22 Instrucciones De Instalación Y Funcionamiento página 36

en-US
9.5.1 Recommended maintenance mea-
sures
9.5.2 Rotating the propeller
9.5.3 Visual inspection of the connec-
tion cable
9.5.4 Visual inspection of the cable
brackets and cable tensioning
9.5.5 Visual inspection of the mixer
9.5.6 Function test of the monitoring
devices
9.5.6.1 Checking resistor in the tempera-
ture sensor
36
Maintenance and repair
CAUTION! Do not set the mixer down on the propeller! Provide an appropriate platform.
NOTICE! Only perform the maintenance work described in these installation and operat-
ing instructions.
For smooth operation, it is recommended to carry out regular inspections of the current
consumption and the operating voltage in all three phases. In normal operation, these values
remain constant. Slight fluctuations depend on the characteristics of the fluid.
Current consumption can provide an early indication of damage to or malfunctions in the
mixer, which can then be rectified. Larger voltage fluctuations strain the motor winding and
can cause breakdown. Regular inspections can prevent major secondary damage and reduce
the risk of total breakdown. With regard to regular inspections, the use of remote monitor-
ing is recommended.
‡
Protective equipment used!
‡
Mixer disconnected from mains!
1. Place mixer on a firm work surface in a horizontal position.
CAUTION! Do not place the mixer on the propeller! Use an appropriate pedestal for
the propeller diameter.
2. Secure the mixer against falling over or slipping!
3. Grip the propeller carefully and rotate the propeller.
Check the connection cable for:
ƒ
Bubbles
ƒ
Cracks
ƒ
Scratches
ƒ
Abrasion
ƒ
Pinch points
ƒ
Changes caused by chemical corrosion
If the connection cable is damaged:
ƒ
Decommission the mixer immediately!
ƒ
Have the connection cable replaced by the customer service!
CAUTION! Material damage! Damaged connection cables cause water to enter the motor.
Water in the motor leads to total damage of the mixer.
Check cable brackets and anchoring for material fatigue and shrinkage.
ƒ
Replace worn or defective components immediately.
Check the housing and propeller for damage and wear. If there are defects, observe the fol-
lowing:
ƒ
Repair damaged coating. Order repair kits from the customer service.
ƒ
If components have worn, contact customer service!
The mixer must be cooled down to ambient temperature to test resistances!
‡
Ohmmeter available.
1. Measure the resistance.
⇒ Measured value Bimetallic strip: 0 ohms (passage).
⇒ Measured value 3x PTC sensor: between 60 and 300 Ohm.
⇒ Measured value 4x PTC sensor: between 80 and 400 Ohm.
▶ Resistance checked. If the measured value deviates from the specification, consult the
customer service.
WILO SE 2021-10