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HIBBING COMMUNITY COLLEGE

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					                          HIBBING COMMUNITY COLLEGE
                                COURSE OUTLINE



COURSE TITLE & NUMBER: RHAA1520: Dishwasher Systems Technology
CREDITS: 2 (Lecture Hours 17 / Lab Hours 34 per Semester)
PREREQUISITES: RHAA1400: Introduction to Electricity


CATALOG DESCRIPTION:
Dishwasher Systems Technology covers the theory and operating principles involved
with different brands of dishwashers. The electrical and mechanical systems are
studied. Advanced troubleshooting techniques of the electrical and mechanical
systems are practiced.


OUTLINE OF MAJOR CONTENT AREAS:

I. Theory of operation
       A. Cleanability
       B. Water Distribution system
       C. Electrical controls
II. Component identification & Location
III. Parts Research & Pricing
IV. Wiring diagram interpretation
V. Troubleshooting Procedures


COURSE GOALS/OBJECTIVES/OUTCOMES:

The student will
1.    discuss proper loading techniques.
2.    explain the differences in the number of wash levels.
3.    apply safety rules in lab.
4.    list the requirements for good cleanability of dishes.
5.    perform water hardness test.
6.    determine the proper amount of soap usage.
7.    identify different applications of wetting agent.
8.    list possible problem when drain line is installed into garbage disposal.
9.    explain activation of the main wash cup on various brands and models of
      dishwashers.
10.   demonstrate the proper usage of testing instruments.
11.   remove pump assembly and inspect shaft seal.
12.   identify and explain different methods of grinding food.
13.   explain the hazards of using liquid hand soap in a dishwasher.

                  Hibbing Community College, a technical & community college
                           an equal opportunity educator & employer
14.   define "etching".
15.   describe methods of removing soap and mineral deposits.
16.   properly install a dishwasher.
17.   examine the operating characteristics of the overflow switch.
18.   describe the operating characteristics of the "pots and pans" cycle.
19.   describe the operating characteristics of the "normal" cycle.
20.   removed and describe the soil settler system.
21.   describe what safety components are used if heater remains heating.
22.   complete all appropriate paperwork correctly.
23.   perform simulated service call.
24.   examine water distribution system and component functions.
25.   examine various methods of drying the dishes.
26.   describe the operating characteristics of the "delay wash" feature.
27.   explain the importance of water softness as it relates to good cleanability.
28.   examine different variations of water filtration design.
29.   explain the function of a check valve.
30.   wire actual circuits using appropriate wiring diagrams.
31.   determine if duration of heat added to the water is controlled by time or
      temperature.
32.   identify what cycles automatically heat the water.
33.   describe methods of heating the water.
34.   describe the operating characteristics of the "rinse and hold" cycle.
35.   describe the operating characteristics of the "crystal/china" cycle.
36.   describe the operating characteristics of the "light wash" cycle.
37.   complete simulated service call.
38.   discuss some of the common reasons for mechanical failure.
39.   discuss some of the common reasons for electrical failure.
40.   describe the importance of water temperature as it relates to cleanability.


HCC COMPETENCIES MET:

Working Productively & Cooperatively, Communicating Clearly & Effectively, Thinking
Creatively & Critically, Social Responsibility, Valuing Self.


STUDENT CONTRIBUTIONS:

The student is expected to
1. demonstrate and exercise safety skills.
2. attend all lectures.
3. participate in class activities.
4. participate and implement input into class discussions.




                  Hibbing Community College, a technical & community college
                           an equal opportunity educator & employer
                          To request disability accommodations, please contact
                               Bonnie Olson, Central Campus, 218-262-7246
               Students are encouraged to discuss their individual needs with the instructor.



METHODS FOR EVALUATING STUDENT LEARNING:

Exams, quizzes, outside assignments, class attendance/participation, group
discussions, behavioral observations, simulations and other learning experiences will be
translated to points earned. Letter grades A-F will be earned based on points earned.



SPECIAL INFORMATION: (SPECIAL FEES, DIRECTIVES ON HAZARDOUS
MATERIALS, TEXTBOOK USED, ETC.)

Whirlpool workbooks
Instructor hand-outs
Service Manuals



___________________________
Date Approved


RHAA1520.con 11/97




                         Hibbing Community College, a technical & community college
                                  an equal opportunity educator & employer

				
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