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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
Installation and operating instructions Wilo-EMU TR/TRE 216 ... 326-3
Maintenance and repair
Before starting maintenance work, meet the following requirements:
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Wear protective equipment! Observe the work regulations.
–
Safety shoes: Protection class S1 (uvex 1 sport S1)
–
Protective gloves: 4X42C (uvex C500)
–
Safety goggles: uvex skyguard NT
For detailed marking of frame and disc, see the section on "Personal protective equip-
ment [} 8]".
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The mixer has been thoroughly cleaned and disinfected.
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Motor cooled to ambient temperature.
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Workplace:
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Clean, good lighting and ventilation.
–
Firm and stable work surface.
–
Secured against falling over and slipping.
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:
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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 the connection cable is damaged:
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Decommission the mixer immediately!
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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:
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Repair damaged coating. Order repair kits from the customer service.
ƒ
If components have worn, contact customer service!
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