Standard |
APS
105 – Refrigeration Appliances I
Provides instruction on the operation,
service, and installation of refrigeration appliances. Emphasis is placed on household
refrigerators and icemakers. Topics include: identification of sealed-system
components, wiring diagram interpretation, sealed-system component service,
icemaker service, cabinet component service, and
icemaker and refrigerator installation.
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Competency Areas |
Hours | ||
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Identification of Sealed-System Components
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Class |
3 | |
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Wiring
Diagram Interpretation |
D.
Lab |
2 | |
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Sealed-System Component Service |
P.
Lab/O.B.I. |
3 | |
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Icemaker
Service |
Credit |
5 | |
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Cabinet
Component Service |
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Icemaker
and Refrigerator Installation |
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Prerequisite: |
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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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IDENTIFICATION OF SEALED-SYSTEM
COMPONENTS |
4 |
3 |
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Refrigerants |
Identify
types and characteristics of refrigerants. |
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Identify
components of various refrigeration
systems. |
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WIRING DIAGRAM
INTERPRETATION |
6 |
9 |
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Symbol
recognition |
Identify
components on a refrigeration appliance wiring
diagram. |
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Sequence
of operation |
Describe
the operational state of components for all cycles of refrigeration
operation. |
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SEALED-SYSTEM COMPONENT SERVICE |
14 |
2 |
28 | |
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Using the
watt meter |
Use a
watt meter to analyze a sealed-system refrigeration
problem. |
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Servicing
tubing and connectors |
Cut
tubing and connectors for refrigeration
appliances. |
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Form
tubing and connectors for refrigeration
appliances. |
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Braze
tubing and connectors for refrigeration
appliances. |
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Sealed-system service |
Operate
refrigerator service valves. |
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Analyze
refrigeration system with manifold gauges. |
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Diagnose
refrigerator sealed-system malfunctions. |
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Test
refrigerator lines for leaks. |
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Flush
refrigerator sealed-system of
contaminants. |
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Service refrigerator
compressors. |
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Service refrigerator
evaporators. |
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Service refrigerator expansion
valves and capillary systems. |
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Service
refrigerator filter dryers. |
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Evacuate
refrigerator sealed-systems. |
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Recharge
refrigeration systems. |
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Clean
refrigeration condenser exterior. |
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ICEMAKER
SERVICE |
2 |
1 |
0 | |
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Diagnosis |
Diagnose
icemaker malfunction. |
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Repair/replace defective icemaker
components. |
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Check
icemaker for correct operation using manufacturers'
specifications. |
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CABINET COMPONENT SERVICE |
2 |
4 |
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Electrical components |
Service
electrical wiring. |
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Service
capacitors. |
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Service
current relays. |
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Service
overload
protectors. |
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Service
potential relays. |
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Service
evaporator fan motors. |
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Service
condenser fan motors. |
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Service
thermostats. |
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Service cabinet and door
hardware. |
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Service door
gaskets. |
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Reversing
door hinges |
Change
doors to open on the opposite side. |
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Drain
line and drip pan |
Confirm
that drain line is free of obstructions. |
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Remove/replace drip pan. |
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Clean
drip pan. |
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Strip
heaters |
Confirm
operation of strip heaters. Repair/replace strip heaters. |
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Cabinet
level |
Adjust
cabinet level. |
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ICEMAKER AND REFRIGERATOR
INSTALLATION |
2 |
1 |
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Size of
opening for refrigerators |
Confirm
that icemaker or refrigerator opening meets manufacturers' requirements
for air flow. |
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Icemaker
plumbing |
Plumb
icemaker water line as recommended by
manufacturer. |
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Electrical requirements |
Assure
that refrigerator and other appliance ampere load does not exceed service
limits. |
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Identify
tools and equipment needed for on-site kitchen appliance
servicing. |
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Select
tools and equipment for on-site kitchen appliance
servicing. |
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Install
refrigerators and icemakers. |
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Suggested
Resources |
Althouse, A. D., et al. Modern refrigeration and air
conditioning.
Meyerink, G. Appliance service
handbook.
Whirlpool
Corporation. Brazing tools and test equipment,
R-44.
Whirlpool
Corporation. Fundamentals and diagnosis, R-43.
Whirlpool
Corporation. Interior and exterior moisture on
refrigeration products, R-57.
Whirlpool
Corporation. Refrigeration electrical controls, R-31.
Whirlpool
Corporation. Sweep charge sealed-system charging
procedure, R-56.
Whirlpool
Corporation. Compressor replacement (Videocassette
No. LIT 677528).
Whirlpool
Corporation. Delivery and installation of Whirlpool
refrigerators (Videocassette No. LIT
677651).
Whirlpool
Corporation. Interior and exterior moisture on
refrigeration products, R-57
(Filmstrip LIT 677946 and Cassette Tape LIT 787142).
Whirlpool
Corporation. Refrigeration interior and exterior
moisture (Videocassette No. LIT 677947).
Whirlpool Corporation. Sweep charge sealed-system changing procedure (Videocassette No. LIT 677910). LaPorte, IN: Author.