Quantcast Chapter 2 Electric Elevators

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CHAPTER 2
ELECTRIC ELEVATORS
2.1 INTRODUCTION
NOTE:
Paragraphs identified with a vertical line in the left margin are inspections that
should be made by certified Vertical Transportation Equipment Inspectors only.
2.1.1 Scope
The inspection procedure for electric traction, winding drum and screw elevators included in
this chapter is not only an inspection of all safety related functions, but is also an inspection to
determine the condition of the equipment and identify areas that need improvement. Proper
maintenance is needed to keep the elevator operating. When preventive maintenance is lacking,
shut downs will occur. Part I of the ANSI/ASME A17.2 Inspectors Manual for Elevators and
Escalators addresses the safety aspect of the inspection of electric elevators. In this chapter we
will identify the specific Division of Part I which relates directly to the inspection procedure
being followed in this text. It is intended that each noted Division should be reviewed as it is
identified and suggested procedures followed. The maintenance and performance considerations
of the inspection will be addressed in the following text. See Figures 2-1, 2-2, and 2-3 which
show various traction elevator arrangements with component names which will be used in this
chapter.
2.1.2 Performance Criteria
As was stated previously, the purpose of this type inspection is to review the entire elevator
installation and that includes measuring the operation of specific elements of the elevator system
against standards which have been established either by national codes or engineering practice
common to the elevator industry. The components of the system selected for testing are those
most directly related to safe operation of the elevator and the overall installation, although some
items, such as speed of the elevator and door open and close times are related to the efficiency of
the operation and grade of service provided. The following is an explanation of the areas that
should be tested and criteria to use for evaluating this performance.
2-1





 


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