Maintenance Measures - Wilo EMU TR 212 Instrucciones De Instalación Y Funcionamiento

9.4.2 Maintenance intervals under harsh
conditions
9.5

Maintenance measures

9.5.1 Recommended maintenance mea-
sures
9.5.2 Visual inspection of the connec-
tion cable
Installation and operating instructions Wilo-EMU TR/TRE 212 ... 326-3
Maintenance and repair
Under harsh operating conditions, the specified maintenance intervals must be shortened as
required. Harsh operating conditions include:
ƒ
Fluids with long-fiber components
ƒ
Strongly corrosive or abrasive fluids
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Highly gaseous fluids
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Operation at an unfavorable duty point
ƒ
Unfavorable flow conditions (e.g. due to fixtures or aeration)
When using mixer under harsh conditions, it is recommended to conclude a maintenance
contract. 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 a lack of protective equipment!
During work there is a risk of (serious) injury. Wear the following protective equipment:
• Safety gloves that protect against cuts
• Safety shoes
• Closed safety goggles
Before starting the maintenance measures the following requirements must be fulfilled:
ƒ
Motor cooled to ambient temperature.
ƒ
Mixer must be thoroughly cleaned and disinfected (if required).
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.
Check the connection cable for:
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Bubbles
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Cracks
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Scratches
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Abrasion
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Pinch points
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Changes caused by chemical corrosion
If damage is identified on the connection cable, 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.
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