Standard

  rev.07/03/03

APS 101 – Laundry Appliances I

Course Description

Provides knowledge and skills in diagnosis and repair of major household laundry appliances. Emphasis is placed on servicing gas dryers and electric dryers. Topics include: component application and identification; diagnosis and repair of malfunctioning electrical, electronic and mechanical components; wiring diagram interpretation; and dryer installation.

 

Competency Areas

Hours

Component Application and Identification

Class

3

Diagnosis and Repair of Malfunctioning Electrical, Electronic and Mechanical Components

D. Lab

2

Wiring Diagram Interpretation

P. Lab/O.B.I.

3

Dryer Installation

Credit

 5

 

 

 

Prerequisite:  APS 100

 

 

Corequisite:

 

 

  

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D. Lab

P. Lab/

O.B.I.

COMPONENT APPLICATION AND IDENTIFICATION          

10 

8

0

Belt drives

Identify laundry appliance drive belts by type and size.

 

 

 

 

Describe the function of laundry appliance drive belts.

 

 

 

 

Identify laundry appliance pulleys and idler assemblies by type and size.

 

 

 

Drum assemblies

Identify laundry appliance drums, drum rollers, and support bearings.

 

 

 

 

Describe the function of laundry appliance drums, drum rollers, and support bearings.

 

 

 

Electric dryer components

Identify laundry appliance blower assemblies, cables, heating elements, temperature controls, and motors.

 

 

 

 

Describe the function of laundry appliance blower assemblies, cables, heating elements, temperature controls, and motors.

 

 

 

Gas dryer components

Identify laundry appliance burner assemblies, ignition systems, and regulators.

 

 

 

 

Describe the function of laundry appliance burner assemblies, ignition systems, and regulators.

 

 

 

DIAGNOSIS AND REPAIR OF MALFUNCTIONING ELECTRICAL, ELECTRONIC AND MECHANICAL COMPONENTS

6 

2

30

Belt drives

Tighten laundry appliance drive belts.

 

 

 

 

Replace laundry appliance drive belts.

 

 

 

 

Determine the serviceability of laundry appliance pulley and idler assemblies.

 

 

 

 

Lubricate laundry appliance pulley shafts and bearings.

 

 

 

 

Lubricate laundry appliance idler shafts and bearings.

 

 

 

 

Replace laundry appliance pulleys, idlers, sheaves, and bearings.

 

 

 

Drum assemblies

Determine the serviceability of laundry appliance drum, support bearings, and rollers.

 

 

 

 

Replace laundry appliance drums.

 

 

 

 

Lubricate laundry appliance support bearings.

 

 

 

 

Replace laundry appliance support bearings.

 

 

 

 

Lubricate laundry appliance drum rollers.

 

 

 

 

Replace laundry appliance drum rollers.

 

 

 

Electrical components

Identify laundry appliance blower assemblies, heating elements, motors, and circuitry components.

 

 

 

 

Describe the function of laundry appliance blower assemblies, heating elements, motors, and circuitry components.

 

 

 

 

Isolate defective laundry appliance components using manufacturers' service manual troubleshooting procedures.

 

 

 

 

Repair or replace laundry appliance blower assemblies, electrical heating elements, and motors electrical wiring cables.

 

 

 

Gas components

Identify hazards associated with laundry appliance gas and exhaust gas leaks.

 

 

 

 

Identify laundry appliance gas dryer ignition systems, burner assemblies, and regulators.

 

 

 

 

Describe the function of laundry appliance gas regulators.

 

 

 

 

Test laundry appliance gas burners, ignition systems, and regulators for serviceability.

 

 

 

 

Test laundry appliance gas line couplings for leaks using both electronic devices and soapy water.

 

 

 

 

Service gas ignition systems, gas burner assemblies, gas regulators.

 

 

 

WIRING DIAGRAM INTERPRETATION

10 

8

0

Wiring and pictorial diagrams

Identify diagram symbols for components of gas and electric dryers.

 

 

 

 

Interpret dryer schematic wiring diagrams.

 

 

 

 

Interpret dryer pictorial diagrams.

 

 

 

Timer sequence charts

Interpret dryer timer sequence charts.