Maintenance Measures - Wilo Flumen OPTI-TR 20-1 Instrucciones De Instalación Y Funcionamiento

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9.5

Maintenance measures

9.5.1 Recommended maintenance
measures
9.5.2 Visual inspection of the connec-
tion cable
9.5.3 Visual inspection of cable brack-
ets and cable tensioning
9.5.4 Visual inspection for wear of the
mixer
9.5.5 Function test of the monitoring
device
9.5.5.1 Test the resistor of the temper-
ature sensor
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Maintenance and repair
When using the mixer under harsh conditions, it is recommended that a maintenance
contract be entered into. Contact customer service.
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.
WARNING
Hand, foot or eye injuries due to the absence of protective equipment!
Danger of (serious) injuries during work. Wear the following protective equipment:
• Safety gloves for protection against cuts
• Safety shoes
• Closed safety goggles
The following preconditions must be fulfilled prior to the start of maintenance meas-
ures:
▪ Motor must have cooled down to the ambient temperature.
▪ Mixer must be thoroughly cleaned and disinfected (if required).
Regular inspection of current consumption and the operating voltage in all three phases
is recommended for smooth operation. In normal operation, these values remain con-
stant. 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 therefore largely prevent
major secondary damage and reduce the risk of total breakdown. In this regard, it is re-
commended to use remote monitoring for regular inspections.
Check connection cable for:
▪ Bubbles
▪ Cracks
▪ Scratches
▪ Abrasion
▪ Pinch points
▪ Changes caused by chemical corrosion
If damage to the connection cable is identified, decommission the mixer immediately!
Have the connection cable replaced by Wilo customer service. Only start the mixer up
again once the damage has been properly remedied!
CAUTION! Water can enter into the mixer if the connection cable is damaged! Water
ingress leads to the mixer being written off.
Check cable brackets and anchoring of the connection cable (lifting equipment or sep-
arate nylon rope) for material fatigue or shrinkage. If there are signs of wear, replace the
faulty components immediately.
Inspect individual components (propeller, hub, etc.) for damage and wear. If there are
defects, observe the following:
▪ If the coating is damaged, restore it.
▪ If components have worn, contact customer service and replace the components in
question!
The mixer must be cooled down to ambient temperature to test resistances!
Measure the resistor of the temperature sensors with an ohmmeter. The following
measured values must be complied with:
WILO SE 2019-01