ASHRAE 87.3 : 2001 : R2006

Foreword
1 Purpose
2 Scope
3 Definitions
4 Introduction
5 Test Methods for Identifying the Type of Excitation
6 Diagnosis of Vibration Problems Excited by Unbalance
7 Diagnosis of Vibration Problems Excited by Electromagnetic
  Forces
8 Diagnosis of Vibration Problems Excited by Aerodynamic Forces
9 Reference to Other Standards
Informative Annex A: Bibliography
Normative Annex B: Guidelines for Accelerometer Selection and
                   Attachment
Informative Annex C: Guidelines for Preventing Noise Contamination
                     of Strain Gage Signals
Informative Annex D: A Model for Estimating the Effect of
                     Gyroscopic Forces
Normative Annex E: Measurement of the Polar Mass Moment of Inertia
Normative Annex F: Measurement of Torsional Acceleration of the
                   Stator
Normative Annex G: Measurement of the Torsional Resonance Frequency
                   of the Stator/Mount System
Informative Annex H: Mathematical Models for Electromagnetically
                     Excited Vibrations
Informative Annex I: The Characteristics of Aerodynamic Excitation

Describes laboratory and on-site diagnostic test methods for identifying causes of vibration problems involving direct-driven propeller fans for condenser cooling in air-conditioning units, heat pumps, and chillers.