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ORP ORATION
CONSUMER SERVICES TECHNICAL
EDUCATION GROUP PRESENTS
Ice Makers, Dishwashers, Built-In Ovens and Surface Units, Ranges, Microwave Ovens, Trash Compactors, Room Air Conditioners, Dehumidifiers, Automatic Washers, Clothes Dryers, Freezers, Refrigerator-Freezers
SERVICE PROFESSIONAL
SEMINAR
Dishwashers
and
Trash Compactors
Student Handbook
Part No. 4322481
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1 2 3 4 5 6 ... 101 102

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Strany 1 - Trash Compactors

1ORP ORATIONCONSUMER SERVICES TECHNICALEDUCATION GROUP PRESENTSIce Makers, Dishwashers, Built-In Ovens and Surface Units, Ranges, Microwave Ovens, Tra

Strany 2

6G. This portion of the chart indicates which events happen at the various intervals in the cycle. Insome cases, more than one event takes place duri

Strany 5 - THEORY OF OPERATIONS

6Making your world a little easier.ice Makers, Dishwashers, Built-In Ovens and Surface Units, Ranges, Microwave Ovens, Trash Compactors, Room Air Cond

Strany 6 - DETERGENT DISPENSER OPERATION

7EXERCISE - TIMER SEQUENCE CHART DESCRIPTION

Strany 7 - HEATER OPERATION

8Directions: Answer the following questions using the Esterline chart on the previous page.1. What is the switch number for the timer motor?a. 3b. 22c

Strany 8

9TIMER DIALIntroductionWhen a customer selects a certain cycle on the dishwasher, the customer turns the timer dial to thatposition and pushes the cor

Strany 11

12Continuing with matching the intervals with the settings on the timer dial, the normal wash correspondsto the second wash on the timer sequence char

Strany 12

13POTS & PANSHEAVY WASHLOW ENERGYWASHNORMAL WASHRINSE & HOLDRINSEDRYOFF

Strany 13 - TIMER DIAL

14EXERCISE - TIMER DIAL

Strany 14

15Directions: Using the Esterline chart on the previous page, number the increments on thetimer dial below, and label the intervals at which the foll

Strany 16

16PUSH-BUTTON SWITCHIntroductionBesides setting the timer dial, the customer has to select and push a button or buttons on the controlpanel for the di

Strany 17

17Timer Sequence Chart and Wiring Diagram (Push-Button)Different switches will be open or closed depending on the cycles and options the customer sele

Strany 18 - EXERCISE - TIMER DIAL

18If the customer selected heavy wash, high temperature wash, and air dry, switches D and K would beclosed, and switches F and H would be opened. Not

Strany 19

19If the customer selected a low energy wash and air dry, switches D and K would be closed and Hwould be in the open position. Switch F would be clo

Strany 20 - PUSH-BUTTON SWITCH

20If the customer selected pots and pans and wanted no other options, the customer would need toselect the pots and pans and reset option buttons. Th

Strany 21

21EXERCISE - PUSH-BUTTON SWITCHES

Strany 22

22POTS &PANSHEAVYWASHNORMALWASHHI TEMPWASHINGENERGYSAVINGAIR DRY

Strany 23

23Directions: Based on the Esterline chart and the wiring diagram on the previous pages answerthe following questions.1. What option(s) are available

Strany 24

24TIMER CONTACT POSITIONSIntroductionThe purpose of the timer sequence (Esterline) chart is to indicate the position of the timer contactsduring the d

Strany 25

25Timer Sequence Chart InterpretationThe way to read a timer sequence chart is by intervals. Determine what event or events are takingplace during th

Strany 26

3TABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTSDISHWASHERSTheory of Operation ...

Strany 28 - TIMER CONTACT POSITIONS

27Look at interval 13. The dishwasher is draining in this event. In this interval, the timer contacts that areclosed are 3, 5, 33, 27, 22, 2, and 1.

Strany 30

29EXERCISE - TIMER CONTACT POSITIONS

Strany 32

31Directions: Answer the following questions based on the Esterline chart and wiring diagramon the previous pages.1. During the entire interval 6, wh

Strany 33

32INTERPRETING INTERVALSIntroductionDuring each interval the timer switches are opened or closed to energize the various componentsused in the differe

Strany 34

33ThermoholdBeginning Third of the IntervalThe first thermohold is in interval 11, during the pots and pans cycle. The switches closed during thefirs

Strany 35

34DELAY STARTLIGHT

Strany 36 - INTERPRETING INTERVALS

35Middle Third of the IntervalDuring the middle third of interval 11, contact 22 opens. (All other switches remain as they were in thefirst third of

Strany 38 - DELAY START

36Last Third of the IntervalThe last third of the interval begins when the water finally reaches 130-140 degrees. When the waterreaches this temperat

Strany 39

37EXERCISE - INTERPRETING INTERVALSDELAY STARTLIGHT

Strany 41

39Directions: Using the timer sequence chart and the wiring diagram on the previous pages,complete the chart and answer the question.1. What cycle se

Strany 42

40PRACTICE EXERCISE - 1

Strany 44 - PRACTICE EXERCISE - 1

42Directions: Based on the setting on the timer dial below:1. Highlight the interval that corresponds to the timer dial setting on the timer sequence

Strany 45

43PRACTICE EXERCISE - 2

Strany 47 - PRACTICE EXERCISE - 2

45Directions: Based on the interval highlighted on the timer sequence chart below and the wir-ing diagram and chart on the previous pages:1. Indicate

Strany 48

1THEORY OF OPERATIONSTHEORY OF OPERATIONSTHEORY OF OPERATIONSTHEORY OF OPERATIONSTHEORY OF OPERATIONSNORMAL WASHWhen the timer is manually set by the

Strany 49

46PRACTICE EXERCISE - 3

Strany 51

48Directions: Using the timer dial below and the timer sequence chart and wiring diagram on theprevious pages:1. Mark the following cycles on the tim

Strany 52

49Fig. A Fig. BDISWASHER COMPONENT TESTING AND/ORDISWASHER COMPONENT TESTING AND/ORDISWASHER COMPONENT TESTING AND/ORDISWASHER COMPONENT TESTING AND/O

Strany 53 - Introduction

50Fig. CFig. DFig. EFig. F

Strany 54

51Dishwasher Dispenser Assembly1. Assembly the upper slide, slide springand lower slide to the detergentdoor actuator. (Fig. G)2. Pass the detergent d

Strany 55 - Dishwasher Dispenser Assembly

52Door SwitchIntroduction1. The door switch is the first switch in the wiring diagram.2. Without 120 volts passing through the door switch, the other

Strany 56 - Door Switch

53Testing1. Disconnect dishwasher from electrical source.2. Remove all wires from the switch.3. Identify each of the switches on the push-button switc

Strany 57 - Push-Button Switches

54Testing1. To check the indicator light for resistance:a. Disconnect the dishwasher from electrical source.b. Check to make sure the 120 volts load i

Strany 58 - Indicator Lights

55TimerIntroduction1. The timer progresses the dishwasher through the cycle, closing contacts to activate individualcomponents as needed.2. The timer

Strany 59

2Once the wash cycle is completed, timer CONTACTS 3 and 2 open and CONTACT 1 closes. WhenCONTACT 3 closes again, power is applied through the motor s

Strany 60 - Testing—Timer Motor

56Testing—Timer Switches1. Disconnect dishwasher from electrical source.2. Disconnect all harness leads from the timer.3. Determine the timer contact

Strany 61 - Thermostat (Water Heating)

57Thermostat (Water Heating)Introduction1. The water temperature thermostat is usually a normally open switch with 3/16 inch terminals.2. It closes wh

Strany 62 - Thermostat (High Limit)

58Thermostat (High Limit)Introduction1. Normally closed thermo/switch with 1/4 inch terminals.2. This switch is a safety switch that opens if the inte

Strany 63 - Fill Valve

59Fill ValveIntroduction1. The fill valve opens when 120 volts is applied to it, and then it lets water enter the dishwasher.2. The mechanical water v

Strany 64 - Overfill Switch

60Overfill SwitchIntroduction1. If the timer fails to advance past the fill position, the overfill switch monitors the water level sothe dishwasher do

Strany 65 - Heating Element

61Heating ElementIntroduction1. The heating element is used both during wash cycles and the heat dry cycles.2. The purpose of the heater is to heat th

Strany 66 - Motor Start Relay

62Motor Start RelayIntroduction1. The motor start relay protects the motor.2. The motor start relay is a “current sensitive” relay.3. At instant of st

Strany 67

63MotorIntroduction1. The motor provides the power for the pump to wash or drain.2. Timer contact 3 is the direct switch to the motor.3. Timer contact

Strany 68

64Testing1. Disconnect dishwasher from its electrical source.2. Disconnect the harness leads from the drive motor.3. Check continuity of motor winding

Strany 69 - TEST/CHECK RESULTS

65COMPONENT CONDITIONMETERSETTINGTEST/CHECK RESULTSDoor SwitchPush-ButtonSwitchTimerThermostat(3/16” terminal)Thermostat(1/4” terminal)Float SwitchFil

Strany 70 - --NOTES

3HEATER OPERATIONTimer CONTACT 6 is closed to supply power to the heater during two (2) cycles.1. During the second WASH cycle to heat the wash water.

Strany 72

67THEORY OF OPERATIONTHEORY OF OPERATIONTHEORY OF OPERATIONTHEORY OF OPERATIONTHEORY OF OPERATIONInstant of StartWhen the start button is pushed, a ci

Strany 73

68Running—Going Down or Coming upAfter the start switch is released and the ram moves down about one inch, the top limit/directionalswitch changes pos

Strany 74 - Instant of Stop

69Instant of Stall (Reversing from Down Coming Up)When the ram reaches the end of its downward movement, the motor stalls. When the motor stalls, itc

Strany 75 - Drawer Tilt Switch

70Instant of StopWhen the ram goes completely up, the ram hits the top limit switch, which causes it to open. This stopsthe ram at its top position.

Strany 76

71Drawer Tilt SwitchIf the drawer is forced open 1/4 inch or more when the ram compacts the trash in the drawer, thedrawer tilt switch closes and comp

Strany 78 - ON, OFF/LOCK Switch

73DISASSEMBLY AND TESTINGDISASSEMBLY AND TESTINGDISASSEMBLY AND TESTINGDISASSEMBLY AND TESTINGDISASSEMBLY AND TESTINGRamPurposeThe purpose of the ram

Strany 79 - ON, OFF, START Switch

74ON, OFF/LOCK SwitchPurposeThe purpose of the ON, OFF/LOCK switch is to prevent the trash compactor from being operatedunintentionally.Removal1. Disc

Strany 80

75ON, OFF, START SwitchPurposeThe purpose of this switch is to turn ON and START the unit or to turn OFF the unit.Removal1. Disconnect the power.2. Re

Strany 81

4-- NOTES --

Strany 82 - Drawer Safety Switch

76Combination Top Limit/Directional SwitchPurposeThe top limit switch keeps the ram from going too high, and the directional switch changes the direc-

Strany 83

77Testing1. Testing of this switch is done when the ram is in three different positions. The position of theram is indicated by the number of clicks

Strany 84

78Drawer Safety SwitchPurposeThe drawer safety switch prevents the compactor from operating if the drawer is open.Removal1. Disconnect power.2. Remov

Strany 85 - Power Screws and Sprockets

79Drawer Tilt SwitchPurposeThe door tilt switch is to prevent the compactor from jamming when the drawer is forced open as muchas 1/4 inch during camp

Strany 86 - Motor Assembly

80Driven Gear and Sprocket Drive Chain AssemblyPurposeThe purpose of the driven gear and sprocket and drive chain assembly is to transfer the motor en

Strany 87

81Power Screws and SprocketsPurposeThe ram rides up and down on the power screws as they turn.Removal1. Disconnect power.2. Lay the compactor on its f

Strany 88 - Reassembly

82Motor AssemblyPurpose1. The motor assembly consists of the:a. Centrifugal switch—which completes a circuit to start the motor windings.b. Motor—whic

Strany 89 - EXERCISE—PROBLEM # 1

83Testing the Centrifugal Switch1. Set the ohmmeter at the Rx1 setting.2. Zero the ohmmeter.3. With button pushed in (switch closed,) check from BU to

Strany 90 - EXERCISES—PROBLEM #2

84Reassembly1. When reassembling the trash compactor, install the components in the following order:a. Centrifugal switch to motor.b. Motor into frame

Strany 91 - EXERCISES—# 3

85EXERCISE—PROBLEM # 1Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is

Strany 92 - EXERCISE—#4

5READING ESTERLINE (TIMER SEQUENCE) CHARTSREADING ESTERLINE (TIMER SEQUENCE) CHARTSREADING ESTERLINE (TIMER SEQUENCE) CHARTSREADING ESTERLINE (TIMER S

Strany 93 - EXERCISES—#5

86EXERCISES—PROBLEM #2Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is

Strany 94 - EXERCISES—PROBLEM # 6

87EXERCISES—# 3Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is and an

Strany 95 - EXERCISES—PROBLEM #7

88EXERCISE—#4Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is and answ

Strany 96 - EXERCISE—PROBLEM # 8

89EXERCISES—#5Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is and ans

Strany 97 - EXERCISE—PROBLEM #9

90EXERCISES—PROBLEM # 6Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem i

Strany 98 - EXERCISE—PROBLEM # 10

91EXERCISES—PROBLEM #7Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is

Strany 99 - EXERCISES—PROBLEM # 11

92EXERCISE—PROBLEM # 8Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is

Strany 100 - -- NOTES

93EXERCISE—PROBLEM #9Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem is

Strany 101

94EXERCISE—PROBLEM # 10Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem i

Strany 102

95EXERCISES—PROBLEM # 11Directions: Based on the following information, wiring diagram, strip circuits, and tech sheets, deter-mine what the problem

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