210-1 General Safety Procedures - transittraining.net · Westinghouse Escalator ... Westinghouse...

212: Escalator-Inspection & Basic Maintenance

Module 5: Preventative Maintenance of Escalator Drive Systems

Instructor/Participant Guide

PPrreevveennttaattiivvee MMaaiinntteennaannccee ooff EEssccaallaattoorr DDrriivvee

SSyysstteemmss

ii IInnssttrruuccttoorr//PPaarrttiicciippaanntt GGuuiiddee

Table of Contents:

Introduction ...................................................................................... 1 Types of Drive Systems ............................................................... 2 Preventative Maintenance Guide ................................................. 3 Modular Drive System .................................................................. 4 Gaining Access ............................................................................ 5 Clean Up Care ............................................................................. 6 Westinghouse Escalator .............................................................. 7 Modular Drive System - Motors .................................................... 8 Motors - Replacement .................................................................. 9 Reducer ..................................................................................... 10 Brakes ....................................................................................... 11 Sprockets and Chains ................................................................ 12 Chain Drive Systems ................................................................. 13 Main Drive Chain ....................................................................... 14 Gear Drive Systems ................................................................... 15

Summary ....................................................................................... 16

Table of Figures: Figure 1 Shock Absorbing Mount ..................................................... 7


SSyysstteemmss

iiii IInnssttrruuccttoorr//PPaarrttiicciippaanntt GGuuiiddee

Icons Used in This Guide

Throughout the Instructor’s Guide, the following icons indicate the type of content being presented.

Refer To

PowerPoint

Multimedia

Web based Training

Write

Ask

Individual Activity

Small Group Activity

Classroom Activity

Duration

Agenda

Topic No. Topic Title Duration

1 Introduction 5 minutes

2 Overview

Types of Drive Systems

Preventative Maintenance Guide

15 minutes

3 Preventative Maintenance of Modular Drive Systems

Gaining Access

Cleaning Up Care

Westinghouse Escalator

Modular Drive System - Motors

Motors - Replacement

Reducer

Brakes

Sprocket and Chains

40 minutes

4 Preventative Maintenance of Chain Drive Systems

Main Drive Chain

15 minutes

5 Preventative Maintenance of Gear Drive Systems

15 minutes

6 Summary 5 minutes

Total Time: 1.6 hours


SSyysstteemmss

iiiiii IInnssttrruuccttoorr//PPaarrttiicciippaanntt GGuuiiddee

Overview

Purpose The purpose of this module is to:

Introduce participants to preventative maintenance of escalator drive systems

Objectives At the end of this chapter, the learner will be able to:

Perform inspection of a transit escalator drive unit

Identify inspection areas

Perform check of all lubricants

Perform check of all seatings and mountings

List all problems located during an inspection

Recommend necessary repairs

Describe the methods used to change out a drive motor

Materials Make sure you have the following:

Laptop (one for leader)

Participant Guides

PowerPoint slide deck

LCD projector

A17.1 Safety Code for Elevators and Escalators

A17.2 Guide for Inspection of Elevators, Escalators and Moving Sidewalks

A17.3 Safety Code for Existing Elevators and Escalators

Heavy Duty Transportation System Escalator Design Guidelines (APTA RT-RP-FS 007-02)

Field Employees’ Safety Handbook

Transit Agency Handbook

Preparation PREPARE flip charts with the following titles:

Class Expectations


SSyysstteemmss

11 IInnssttrruuccttoorr//PPaarrttiicciippaanntt GGuuiiddee

Instructor’s Notes

Slide 1

Slide 2

GAIN audience attention by introducing yourself.

WELCOME the participants to the preventative maintenance of escalator drive systems module.

ASK the participants what the most common types of drive systems are within their TA.

DIRECT participants to the objectives on slide 2.

REVIEW the objectives on Slide 2.

Introduction

Welcome to the Preventative Maintenance of Escalator Drive Systems Module.

What are the most common types of drive systems?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss


Instructor’s Notes Preventative Maintenance of Escalator Drive Systems

Transit Elevator/Escalator Consortium

Three Types of Drive Systems• There are three different types of drive systems found

in transit escalators:

– Modular

– Chain

– Gear

• In this course, we will outline specific features in these three types of systems that require preventative maintenance.

3

Slide 3

REVIEW the main types of drive systems.

ASK the participants to list the differences between the three main types of drive systems.

Types of Drive Systems

List the differences between the three main types of drive systems.

Modular Drive System

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

Chain Drive System

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

Gear Drive System

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 4

REVIEW slides 4 in the PowerPoint presentation to discuss the details of the Preventative Maintenance Guide.

CONTENT: Direct participants to describe in their own words what it means to have a Preventative Maintenance Plan and how it will help them during their process.

ASK: participants to describe their initial steps upon arriving at the station.

Preventative Maintenance Guide

Upon arriving at the station, what should you do first?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss


Instructor’s Notes Preventative Maintenance of Escalator Drive Systems


Modular Drive Systems

5

• Are found in the Washington Metropolitan Area transit Authority.

• Require noise-damping canopies to reduce the noise of the drive while running.

• Contain locking bars that will have to be removed anytime the unit is energized.

Slide 5

REVIEW slide 5 and discuss the brief details of a Modular Drive System.

APPLICATION FEEDBACK: now that we have discussed a little about the modular drive system, have the participants answer the following questions.

ASK participants to describe the purpose of the locking bars.

Modular Drive System

What is the purpose of the locking bars?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 6

Slide 7

REVIEW slide 6 and 7. Discuss the process for gaining access to the drive system.

ASK: participants to describe the process for accessing the modular drive system.

Gaining Access

Describe the process for accessing the Modular Drive System:

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 8

REVIEW slide 8 and review how to properly clean the drive system.

ASK: Where should you dispose soiled rags and towels?

Clean Up Care

When cleaning is complete, where should you dispose soiled rags and towels?

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 9

REVIEW slide 9 and review some additional details of a Westinghouse Escalator.

ASK what is the purpose of a mounting bolt?

Westinghouse Escalator

What is the purpose of a Mounting Bolt?

_______________________________________________

_______________________________________________

_______________________________________________

Figure 1 Shock Absorbing Mount


SSyysstteemmss



Slide 10

Preventative Maintenance of Escalator Drive Systems


• Bearings should be lubricated at recommended intervals.

• No fittings = sealed bearing

• Threaded hole poses a need for a zerk.

• No threads = seal bearing already lubricated.

• New motors are shipped with a plug where grease fitting should be.

11

Modular Drive Systems-Motors

Slide 11

REVIEW slides 10 and 11 and review the proper preventative maintenance procedures for a modular drive motor.

ASK If a motor does not have fittings in the area of the bearings, what does this mean?

Modular Drive System - Motors

If a motor does not have fittings in the area of the bearings, what does this mean?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 12

Slide 13

REVIEW slides 12 and 13 and review the proper preventative maintenance procedures for a modular drive motor.

ASK What does adjusting the jack bolts on the sled which move the motor back and forth accomplish?

Motors - Replacement

What does adjusting the jack bolts on the sled which move the motor back and forth accomplish?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 14



Reducer• Ensure the broken belt switch is operational and

linkage secure.

• Ensure the output shaft collars are secure

• Check the hub clamping for loose belts and tighten if needed.

• Ensure no oil has dripped onto the steps.

• Check that mounting bolts are secure to the sled, and drip pan and hose are in place.

• Ensure reducer drain valve is turned off and hose is removed when reducer is drained.

16

Slide 16

REVIEW slides 14 through 16 and review how to detect problems on the Westinghouse escalator

ASK Why should the breather never be removed while the drive is in operation?

Reducer

Why should the breather never be removed while the drive is in operation?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 17

REVIEW slides 17 and review the brakes of a modular drive system.

ASK the participants to describe how to perform a brake torque test.

Brakes

Describe how to perform a brake torque test:

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss





• Are an integral part of drive system.

• Provide machinery that transfers the motor energy and reducer into the physical device that moves the escalator.

• Are checked for wear and tear.

Sprockets and Chains

18

Slide 18

REVIEW slide 18 and discuss the sprockets and chain system.

ASK the participants to describe how to ensure that there is proper tension on the idler and drive sprocket chain:

Sprockets and Chains

Describe how to ensure that there is proper tension on the idler and drive sprocket chain:

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss





• Are comprised of a gear reducer or gear case.

• Are driven with an output of a single 3-phase motor.

• Are utilizing a Main Drive Chain.

Chain Drive Systems

19

Slide 19

Slide 20

REVIEW slides 19 and 20 and discuss main points of a chain drive system.

APPLICATION FEEDBACK: now that we have discussed a little about the chain drive system, have the participants answer the following questions.

ASK the participants to describe what determines the speed of the drive system.

Chain Drive Systems

What determines the speed of the drive system?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 21

REVIEW slide 21 and discuss the main drive chain..

ASK the participants to Describe the proper steps in tightening the main drive chain.

Main Drive Chain

Describe the proper steps in tightening the main drive chain:

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 22

Slide 24

REVIEW slide 22 to 24 and discuss the proper preventative maintenance of a gear drive system.

APPLICATION FEEDBACK: now that we have discussed a little about the Gear drive system, have the participants answer the following questions.

ASK what is the desired output speed of a gear drive system?

Gear Drive Systems

What is the desired output speed of a Gear Drive System?

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________


SSyysstteemmss



Slide 25

REVIEW slide 25 and summarize the module.

EVALUATION and CLOSURE: Recap the main points of the module before moving on to the next topic within this course.

ASK the participants if they have any outstanding questions on what was presented.

Summary

210-1 General Safety Procedures - transittraining.net · Westinghouse Escalator ... Westinghouse...

Documents

Transcript of 210-1 General Safety Procedures - transittraining.net · Westinghouse Escalator ... Westinghouse...