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Drum dryer maintenance
Drum dryer is driven by four electric motors through gear box.
Predictive maintenance measurements
Fluke 805FCVibration measurment
Fluke 1587FCInsulation measurment
Fluke 376FCLoad measurment
Fluke TiS45Temperature measurment
How does Fluke Connect™ help?
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Define assets
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Vibration measurements
time
Level
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Fluke 805’s Innovative Sensor
Bandpass4kHz – 20kHz
Bandpass10Hz - 1kHz
Bearing EvaluationCF+
Machine Evaluation
ForceSensor
Accelerometer
• When wrong force is applied to vibration pen, you get wrong results
• 805 waits for the right force before starting the measurement
• This unique feature gives reliable results
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Bearing Vibrations
• Bearings are crucial parts in rotating equipment• For maintenance purpose the bearing vibrations
are measured and evaluated to get the condition
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A healthy bearing
time
Level Peak
RMS
RMSPeak
CF = Crest Factor is close to 3
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Bearing’s wear and tear (1)
time
LevelPeak
RMS
RMSPeak
CF = Crest Factor is increasing
Spall or dent
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Bearing wear and tear (2)
time
Level
RMSPeak
CF = Crest Factor is decreasing
Peak
RMS
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CF
Time
No Faults Development Detoriation
Detoriation gets worse
CF
Replace
RMSPeak
CF =
CF =5
Disadvantage of Crest Factor
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CF - Evaluation
CF
Time
No Faults Development Detoriation
Detoriation gets worse
CF
Replace
CF+
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Meaurments gained from Fluke 805FC
Overall vibration measurements
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High overall vibration because of the nature work of drum dryer
Bandpass10Hz - 1kHz
Machine Evaluation
Overall vibration measurements
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High CF+ value cause by waer bearing
Bandpass4kHz – 20kHz
Bearing EvaluationCF+
CF+ measurements
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Temperature measurements
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the electrical equipment should have at least 40% load for a good inspection
Temperature measurements
Temperature measurements
Temperature in insulation life time
•Max temp exceeded by:– +10° C– +20° C– +30° C
•Insulation life reduced by:– 50%– 75%– 88%
Motor Inspection Basics:
• With failing insulation the overall motor temperature increases
• Overheating causes failures and reduces insulation time
• Production losses caused by downtime can be very high
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Temperature measurements
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Occurs when the insulation between motor windings deteriorates (think about dust, sand, water, corrosion etc), causing a short circuit in the windings.
Insulation measurements
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• Look for a resistance value of >1 megaohm per kilovolt.• Best if part of periodic maintenance schedule.• Next power up, check for shaft voltage and bearing current.
Insulation measurment
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Insulation measurment
1. Connect 2. Capture 3.Save 4. View Measurements 5.Share Measurements
7. ViewEquipment Records
8. View Work Orders
6. Collaborate 9. Visualizeon Equipment Health
Technicians can ….
A team can ….10. Share
Equipment Health
With Fluke Connect™…
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