Standard |
APS 102 - Laundry Appliances II
Continues the development of knowledge and skills in diagnosis and repair of major household laundry appliances. Emphasis is placed on servicing washers. Topics include: component application and identification, diagnosis and repair of malfunctioning electrical, electronic and mechanical components, wiring diagram interpretation, and washer installation.
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Competency Areas |
Hours
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Component Application and Identification |
Class |
2 |
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Diagnosis and Repair of Malfunctioning Electrical, Electronic and Mechanical Components |
D. Lab |
2 |
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Wiring Diagram Interpretation |
P. Lab/O.B.I. |
3 |
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Washer Installation |
Credit |
4 |
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Prerequisite: |
APS 101 |
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Corequisite: |
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Course Guide |
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Competency |
After completing this
section, the student will: |
Hours |
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Class |
D.Lab |
P.Lab/ O.B.I. |
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COMPONENT APPLICATION AND
IDENTIFICATION |
8 |
0 |
6 |
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Water control components |
Identify water control components of washers by type, output, and location. |
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Describe the function and operation of washer water control components. |
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Tub assemblies |
Identify washer belts, pulleys, clutches, brake systems, and idlers by type and size. |
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Describe the function and operation of washer clutches and brake systems. |
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Identify washer tub suspension assemblies. |
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Describe the operation of washer tub suspension assemblies. |
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Identify laundry appliance packings, gaskets, and seals. |
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Identify laundry appliance linkage and lever assemblies. |
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Describe the function of laundry appliance linkage and lever assemblies. |
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Transmission components |
Identify laundry appliance shaft and bearing assemblies. |
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Discuss the function of laundry appliance shaft and bearing assemblies. |
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Identify laundry appliance shaft couplings, cam assemblies, and universal joints. |
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Discuss the function of washer shaft couplings, cam assemblies, and universal joints. |
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Identify laundry appliance direct drives and variable speed by type and location. |
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Describe the function of direct drives and variable speed drives. |
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DIAGNOSIS AND REPAIR OF MALFUNCTIONING ELECTRICAL AND
MECHANICAL COMPONENTS |
2 |
2 |
30 |
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Water supply components |
Determine the serviceability of laundry appliance circulation and drain pumps, float sensors, water supply controls, temperature switches, and water supply/drain lines and couplings. |
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Repair/replace laundry appliance circulation and drain pumps, float sensors, water supply controls, temperature switches, and water supply/drain lines and couplings. |
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Tub assemblies |
Inspect laundry appliance belts, pulleys, and idlers for serviceability. |
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Tighten tub drive belts. |
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Replace washer belts, pulleys, and idlers. |
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Lubricate washer pulley and idler shafts and bearing. |
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Determine the serviceability of laundry appliance clutches, brakes, packings, gaskets, seals, linkages, and levers. |
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Repair/replace laundry appliance clutches, brakes, packings, gaskets, seals, linkages, and levers. |
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Transmission |
Evaluate the serviceability of laundry appliance bearing and shaft assembly, shaft couplings and universal joints, cam assemblies, centrifugal switch, direct drive, and variable speed controls. |
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Repair/replace laundry appliance bearing and shaft assembly, shaft couplings and universal joints, cam assemblies, centrifugal switch, direct drive, and variable speed controls. |
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Electrical components |
Inspect laundry appliance electrical cables for damage, wear, and continuity. |
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Inspect laundry appliance motors, solenoids, starter relays, timers, and safety interlocks for proper operation. |
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Repair/replace laundry appliance electrical cables, motors, solenoids, starter relays, timers, and safety interlocks. |
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WIRING DIAGRAM INTERPRETATION |
8 |
0 |
10 |
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Wiring and pictorial diagrams |
Identify symbols for components of washers. |
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Interpret washer schematic wiring and pictorial diagrams. |
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Timer sequence charts |
Interpret washer timer sequence charts. |
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WASHER INSTALLATION
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2 |
0 |
2 |
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Tools and materials |
Using manufacturers' service manuals select tools and equipment needed for washer installation. |
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Transporting |
Identify manufacturers' procedure for transporting washers. |
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Use equipment hydraulic lifts, dollies, and appliance hand trucks to load, transport, and unload washers. |
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Installing washers |
Install washers using manufacturers' instructions. |
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Suggested Resources |
Meyerink, G. (1988). Appliance servicing handbook (2nd ed.). Englewood Cliffs, NJ:
Prentice Hall.
Whirlpool Corporation. (1988). Reading and understanding wiring diagnosis
for washers, L-49. LaPorte, IN: Author.
Whirlpool Corporation. (1988). Servicing washer mechanical and water
systems above the baseplate, L-42. LaPorte, IN: Author.
Whirlpool Corporation. (1988). Servicing washer mechanical and water
systems below the baseplate, L-41. LaPorte, IN: Author.
Whirlpool Corporation. (1988). Understanding laundry electrical controls
and components, L-40. LaPorte, IN: Author.
Whirlpool Corporation. (1988). Reading and understanding wiring diagnosis
for washers, L-49 (Videocassette No. LIT 677738). LaPorte, IN: Author.
Whirlpool Corporation. (1988). Servicing washer mechanical and water
systems above the baseplate, L-42 (Videocassette No. LIT 677108). LaPorte,
IN: Author.
Whirlpool Corporation. (1988). Servicing washer mechanical and water
systems below the baseplate, L-41 (Videocassette No. LIT 677105). LaPorte,
IN: Author.
Whirlpool Corporation. (1988). Understanding laundry electrical controls and components, L-40 (Videocassette No. LIT 603919). LaPorte, IN: Author.