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The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas A. Martin Reliability Team Leader Brady Services Inc. Vibration Analyst ISO Cat IV Chairman VI Piedmont Chapter #14 9/19/2014

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Page 1: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

The Not So ScaryWorld of Centrifugal

Chillers

Your Comfort. Our Promise.

Nicholas A. MartinReliability Team Leader

Brady Services Inc.Vibration Analyst ISO Cat IV

Chairman VI Piedmont Chapter #149/19/2014

Page 2: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Common Manufacturers

Your Comfort. Our Promise.

Page 3: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

• Do you have any Centrifugal chillers atyour facility?

• Are you performing routine vibration datacollections?

Your Comfort. Our Promise.

collections?

• If not, why not?– Complexity

– Lack of understanding

– Size

– Dynamics

– Safety concerns

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Do you test your Pumps?

Your Comfort. Our Promise.

Page 5: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Basic Understanding

Your Comfort. Our Promise.

Page 6: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Types of Centrifugal Chillers

• Direct Drive– Multi-stage Semi hermetic (Trane)

– Multi-Stage Semi Hermetic High SpeedMagLev (TurboCor)

Your Comfort. Our Promise.

• Gearbox Driven– Single Stage Semi hermetic (Carrier)

– Single Stage open drive (York)

– Single stage Semi Hermetic High Speed(McQuay)

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Safety Concerns

• Elevated work area with limited handholdsand poor footing.

• Hot surfaces

• Oily and/or wet surfaces

Your Comfort. Our Promise.

• Oily and/or wet surfaces

• Pressurized refrigerant and oil lines

• Electrical lines and sensors

• Rotating components (usually wellguarded)

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When to Collect Data

• When it’s running

– Ideally 30 minutes or longer

• When it’s loaded

– Preferably at or above 70% FLA but good

Your Comfort. Our Promise.

– Preferably at or above 70% FLA but gooddata can be gathered at lower loads

• When it’s stable

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When NOT to collect

Your Comfort. Our Promise.

Page 10: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

What to collect

• As much operational data as possible

– Load %FLA

– Hours

– Starts

Your Comfort. Our Promise.

– Starts

– VFD Output

– Oil pressure

– Water temps

– Refrigerant pressures

Page 11: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Your Comfort. Our Promise.

TRANE

Direct Drive Compressors

Page 12: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Trane Centrifugal

Your Comfort. Our Promise.

Page 13: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Trane Points Location

Your Comfort. Our Promise.

Page 14: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Inner race Defect

Your Comfort. Our Promise.

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Inner Race Defect

Your Comfort. Our Promise.

Page 16: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Inner Race Defect

Your Comfort. Our Promise.

Page 17: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

BPFI & Harmonics

Your Comfort. Our Promise.

Page 18: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Sidebands

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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MOV Reading

Your Comfort. Our Promise.

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MOH Reading

Your Comfort. Our Promise.

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4:30 position reading

Your Comfort. Our Promise.

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Axial Reading

Your Comfort. Our Promise.

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Waveform energy

Your Comfort. Our Promise.

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Waveform

Your Comfort. Our Promise.

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MIH Readings Historical

Your Comfort. Our Promise.

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MIH Readings Current

Your Comfort. Our Promise.

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MIV Current

Your Comfort. Our Promise.

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Motor Current/Rotor bar

Your Comfort. Our Promise.

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Journal Bearing

Your Comfort. Our Promise.

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Journal Bearing Damage

Your Comfort. Our Promise.

Page 33: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Motor speed ID

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

Page 38: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Broken Rotor Bar

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

DANFOSS TURBOCOR

Direct Drive High Speed

Page 40: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

TurboCor MagLev

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

GEARBOX DRIVENCOMPRESSORS

Overview

Page 42: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

YORK

Gearbox driven single stage

Page 44: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

York Point Locations

Your Comfort. Our Promise.

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The Odd Ball

Your Comfort. Our Promise.

Page 46: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

• So what happens when we take data in anunstable condition?

Your Comfort. Our Promise.

Page 47: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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• Are you sure there is a problem?

• Are you sure of what the problem is?

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

CARRIER

Gearbox Driven Semi-hermetic single stage

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Internal

Your Comfort. Our Promise.

Page 57: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Compressor Cutaway

Your Comfort. Our Promise.

Page 58: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

Baseline Compressor Axial

Your Comfort. Our Promise.

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Problem Axial

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

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Your Comfort. Our Promise.

MCQUAY

Gearbox driven Semi-hermetic High Speed

Page 63: The Not So Scary World of Centrifugal Chillers - Vibration Not So Scary World of Centrifuga… · The Not So Scary World of Centrifugal Chillers Your Comfort. Our Promise. Nicholas

McQuay Point Location

Your Comfort. Our Promise.

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Your Comfort. Our Promise.

QUESTIONS?

The End