Kenmore 5871656583, 5871656581, 5871656580, 5871648581 Owner’s Manual

Do-It-Yourself REPAIR

for

AUTOMATIC DISHWASHERS

Easy-to-follow step-by-step repair procedures and illustrations

Sold by Sears, Roebuck and Co, Chicago, IL 60684

22/587

.... _ _ _'r_-=:_- ,"_'_¸

We Service Wh_,t We Sell

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Service Organization as near as your telephone.

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finest, most capable Technical Instructors we can find. In turn,

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Sears Service Organiz_ion have

in all probability been _rained in one of these schools.

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You Can Count On Us,

No part of this book may be reproduced without the written permission of

Sears. Roebuclc and Co

and Co

[Sears t

WHEN SEARS PEOPLE SAY, "WE SERVICE WHAT WE SELL." THEY MEAN IT,

When you get your appliance from Sears, Roebuck and Con, you get something

• nobody else can give you - Sears service. Many families who've been around hate to

buy even a toaster anywhere else.

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be prepared for moves around the cotJntry_ One important way to prepare_° take a tip from the military who really have to move

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TABLE OF CONTENTS

A÷

Water, Detergent, and the Automatic Dishwasher ................................................................................................ 3

Installation ...........................................................................................................................................................................................................

Portable ..........................................................................................................................................................................................

Undercounter ....................................................................................................................................................................................

Wash System ....................................................................................................................................................................................................16

I_ 2 Level .....................................................................................................................................................................................................16

2, 3 Level .........................................................................................................................................,......................................................19

3. 2 Level - Compact Modeis ...................................................................................................................................................................20

4. Water Inlet Valve.............................................................................................................................................................................21

5, Side Water Inlet/Steam Trap/Venting ....................................................................................................................................26

6. Motor and Pump Assembly .........................................................................................................................................................................27

7. Hos_sand Couplers ......................................................................................................................................................._:.................. 42

8. Dispensers...................................................................................................................................................................:........................45

a. ' Detergent ...................................................................................................................................................................................:,.................. 45

b. Wetting Agent ........................................................._,:................................................................................................................47

Electrical Controls .............................................................................................................................................................................................49

1. Timers .......................................................................................................................................................................................................................................49

2. SelectorSwitches..........................................................................................................................................................................................50

34 Thermostats and Temperature Indicators .........................................................................................................................51

4. Door,and FloatSwitches..........................................................................................................................................................................59

7 7

Wiring Diagrams and Ester line Charts ............................................................................................................................................61

i Wiring Diagrams .........................................................................................................................................................................................61

2. Ester line Charts...................................................................................................................................................................................................R2

3 Voltage Checks.................................................................................................................................................................................66

4. ContinuityCheck.........................................................................................................................................................................................67

Fo Mechanical System ..................................................................................................................................................................................68

!, Door Assemblies ....................................................................................................................................................................................................68

2_ Racks ...............................................................................................................................................................................................................................71

3. Tub Gaskets ....................................................................................................................................................................................................72

& Cord Reel ......................................................................................................................................................................................................75

5,, Casters ..........................................................................................................................................................................................................................76

6. Tubs ........................................................................................................................................................................................................77

G. Drying System ....................................................................................................................................................................................................................78

1_ Convection Method..........................................................................................................................................................................................78

2, Forced Air Method...............................................................................................................................................................................79

3, Heating Elements .....................................................................................................................................................................................8]

a. Power Miser Option .....................................................................................................................................................................82

H, Pictorial View of Dishwasher ...........................................................................................................................................................84

Troubleshooting .........................................................................................................................................................................................................85

1, General ....................................................................................................................................................................................................85

2,, Water Leaks......................................................................................................................................................................................................91

MISCELLANEOUS SERVICE PART NUMBERS ......................................................................................................................92

INTRODUCTION

This service manual is designed to provide you with a basic knowledge of the operation of your Kenmore Dishwasher.

It was not designed to cover a specific model, but covers, in detail, the repa!r of most components used on any model. The production of a service manual for each individual

model is not practical because of the excessive duplication that would resutL

Thorough study of this manual will provide a good working knowledge of the compo-

,nents that may be used within a Kenmore Dishwasher,. Application of this knowledge

to a specific dishwasher should make repair relatively simple.

Included in this manual are installation instructions and service procedures.

The importance of proper installation of any appliance cannot be overstressed. Our experience indicates that incorrect installation is a major cause of unsatisfactory product performance.

CAUTION - PLEASE NOTE

Sears, Roebuck and Co. assumes no responsibility for any repairs made on our products by anyone other than our own Service Technicians,

Replacement of the dishwasher tub should be performed only by a qualified technician°

It is recommended that you contact your nearest Service Department for this service.

As a safety precaution, ALWAYS disconnect electrical power from the dishwasher

before attempting to make any repairs_

A. WATER, DETERGENT AND THE AUTOMATIC

DISHWASHER

Water

Water is a primary ingredient in determining automatic dishwashing result5 The minerafs in water, when in sufficient quantity, wilt cause spotting, filming and the possible discoloration of some metals. The minerals which account tot the greatest difficulty are calcium and magnesium These minerals delermine the hardness ol the water

Theaefin[tibn of hard _ate_: varies s6h_ewP;at However[ m6s{-a_Jthor[fies a'gree G4th the following scaie "

0 to 4 grains hardness per gatlon - soft water 4 to 8 grains hardness per gallon - medium water

8 to 12 grains hardness per gallon - hard water

over 12 grains hardness per gallon - very hard water

Automatic dishwashing results are v_stb/y affected when calcium and magnesium are present in a concentration ot eight grains per gallon ol more As their concentration increases, the problems of spotting and filming can increase proportionately

When spotting and filming are caused by hard water conditions, they wilt normally be evident on glassware and table- ware (silverware! within a short period of time Over a longer period of time, hard water film can build up on the racl.:s,

walls, spray mechanism and heating element of the dishwasher itself The development of hard wa'ter film on the dishwasher may cause additional problems and reduce the efficiency of the dishw_tsher due to the build-up of the time deposits on the pump area, drain hoses, etc

If water supplied to the dishwasher is less than !0 grains hard, spotting and filming can be controlled satisfactorily by

the amount of detergent used. in a properly functioning dishwasher When correct amounts of detergent are used for the availing water conditions, the water softening ingredients wilt

also dissolve calcium and magnesium which have deposited on dishware surfaces in preceding dishwashing cycles

In medium and hard water conditions, the amount of detergent used should be increased We recommend fdhng the detergent cups under these conditions In some very hard water conditions, it may also be advisable to place addi- tional detergent in the dishwasher for the main wash cycle

When the total hardness of the water exceeds 12 grains per gallon, it may be advisable to install a water conditioning unit to remove the catcium and magnesium from the water, in order to insure continuous excellent automatic dish-

washing results Also keep in mind that when a customer already has a water softener that it may not be function- _nq correctly or it may not be able to handle the capacity needed for the size of the household

REMOVAL AND CONTROL OF HARD WATER FILM

A 5% or 6% acidic solution, such as vinegar, will remove hard water film and may be used lo determine its presence

on glassware Place a small amount of vinegar in a bowl and allow filmed glassware to soak in the vinegar for 3 to 10

minutes Remove from vinegar, rinse and blot dry tf the film present was due to hard water, it will have been re-

moved

The following "home" method may be used to remove hard water film from glassware and the dishwasher: Allow dishwasher to fill for the main wash cycle; place two cups vinegar in the water and allow machine 1o complete the entire cycle Do not place metalware, plasricvvare, silverware, cutlery, or detergent m dJsh_c'asher when performing [h_ fffm _tnpping prodes_

The Automatic Dishwasher

The automatic dishwasher is blamed for many problems over which it exercises no control A properly funclioning

dishwasher, properly loaded, using the recommended amount of a good dishwasl_er detergent and having the speci*

fled water charge will do an excellent job of cleaning Some of the problems that do arise and are caused by conditions other than functional characleristics of the dish*

washer are as follows:

Sudsing- You are familiar with the mountains of suds that result from using the wrong detergent in an automatic

washer A similar problem in an automatic dishwasher can be caused by using improper detergents, using solid jet dry. a leaking wetting agent dispenser or excessively tow or high water temperature A complaint of poor cleaning of dishware may accompany this problem Sudsing leaks in a dishwasher will usually occur at the door gasket or the blower housing On hard to find leaks, suspect sudsing and check the following:

Use a fresh detergent made especcal/y for automatic d_shwashing. Such detergents are labeled on each container

for automatic or electric dishwashing When in doubt, consult the Owner's Manual; i1 contains the recommended detergents, or use recognizable major brands

Water temperature recommended on most detergent packages is 140° if water temperature is extremely low (120 °) or extremely high (180°}, then sudsing will surely occur For best results from detergent and wetting agent liquid, water temperature should be between t40 ° - 150°F Solid jet dry should be avoided except if you should choose to place the jet dry in dishwasher for the final rinse only

Hand pre-washing of dishware with .Joy or other such dishwashing liquids or soaps prior 1o loading can cause ex- cessive sudsing since this liquid may not be thoroughly rinsed away and, ,when agitated in the dishwasher, can cause sudsing

A malfunctioning of the wetting agent dispenser mechanism which would allow excessive amounts of liquid jet

dq,' to be released in the rinse or wash may also cause excessive sudsing Each injection of wetting agent liquid

should be approximately 8cc

Etching - Etching of glassware is the result of soft glass and an alkaline compound. The surface of the glass has

actually been destroyed and no amount of rubbing can restore the glassware to its original state

A quick check for etching can be made by scratching the surface of the glass with a pin If the "stain" or "spott-

ing" (white film) can be removed, the condition is an undesirable film but not etching

Permanent etching of glassware can in no way be caused by the operation of the dishwasher The dishwasher can only be a contributor to the problem if it is not properly circulating the water charge

Make sure the dishwasher is operating normally and there is an adequate supply (volume) of water to insure a good fill each time Check to be certain the water is circulating and the detergent is fresh

There are several factors which cause or contribute to permanent (etching) staining

1 Extremely hot water 2 Excessive use of detergent for water condition

3 The water ts soft (0 to 4 grains hard, either naturally or thru a softener)

4 Composition [mineral makeup] of water

5 Composition of the glasses themselves

Softened water is more detrimental than naturally soft water We do not imply that the water softener be re,- moved There may be a definite need for a softener

We can elfectively control only two of the above factors; wa[er temperature and amount of detergent. We recommend when etching is encountered that water temperature be set no higher than !40°; and a reduction

in the amount of detergent used, consistent with good dishvvashing results One tablespoon per detergent cup may be adequate

This may not completely eliminate etching, but it wilt help 1o slow down the process of etching of glassware

3 DishwashmgProblems andAnswers

PROBLEM

DishesNotClean

Spotting

Filming

Etching ...........

Silverware Stained or Pitted

Bronze Tarnish on Silverware

Black Marks on Dinnerware

Aluminum Discoloration

Brown Stains (Rust) on Dishes or Tub

Dishes Not Dry

POSSIBLE CAUSE & SOLUTION

Water temperature is too low It should be from t40°Fo to t50°F (60°C

to 66°C,)

Not enough water in the dishwasher Using old, lumpy detergent

Improper loading Items may be placed in the wrong position A knife or

a slender handle may have prevented spray arm turning

Caused by minera! deposits from ha(d or soft water left by evaporation

Use a wetting agent such as Jet Dry Store dishwasher detergent in

a c0ol, dry place

Water is too hard Use more detergent tf hardness is greater than ]2

grains, you may need to install a water softener Usually hard water film can be removed by soaking a glass in a half and half solution of vinegar and water, ° If this proves effective, load the filmed glasses and dishes into the dishwasher Operate on LIGHT WASH cycle Stop

the machine after it has filled for the wash phase of the cycle and pour in two cups of vinegar Close the door and let the machine complete

the cycle

°Some commercial products such as Glass Magic may be avaifable in

your area

Etching appears as a film and is impossible to remove It can be retarded

by using smaller amounts of detergent Thorough rinsing is important; so load your dishwasher properly. Do not overload it Dishwasher

water temperature should be at 140°F. (60°C),

Can be caused by direct contact with detergent or prolonged contact

with acid or salty foods Do not let detergent drop on silverwai'e Rinse tableware promptly if it has been exposed to staining foods.

Silverplate has worn off, exposing base metal, Silver polish can remove

tarnish but replating is necessary for permanent solution

Can be caused by metal objects rubbing the plate Remove the marks by

soaking the plate in a mild Meach solution After this, wash the ptate in a normal dishwasher cycle

Minerals in your water supply and high water temperature in

combination with some detergents can darken aluminum

Too much iron in your water You may need iron removal equipment

installed

The water is too cool It should be at least 140°F (60°C) at the dish-

washer

Improper loading Load dishes so the water can run off

On machines without forced air drying, try opening the door slightly at

the beginning of the dry cycle Unload after about an hour

Select "Hot Dry"

Use of wetting agent for those dishwashers equipped with automatic dis-

pensers helps water to sheet off faster

Dishes Chipping

Dishwasher Odor

Noise

Water in Tub Bottom

Improper loading Load glassware and dishes between the supports so

they are stable and cannot bump each other

Soiled dishes held too long in dishwasher Use RINSE 8 HOLD cycle for

dishes that will be washed later

Some hard object (bottle cap, measuring spoons, etc ) may have fallen

into the bottom of the tub Clean the pump

A small amount of water will remain in the boltom of the tub after each

cycle

CLEANINGMINERALDEPOSITSFROMPORCELAINSURFACES

Thefollowingprocedureissafeif theinstructionsarecarefullyfollowed Manycomplaintsofporcelaindeleriorationhavebeentracedtoasurfacediscolorationduetothepresenceofiron,

manganeseorcalciuminthewa;ersupplyInareashavingahighmineralcontentinthewater,particularlyiron, discolorationorstainscanusuallyberemovedbythefollowingmethod:

t UsewatersoftenerResinCleanerThiscompoundisavailablefromSearsPlumbingand Heating Department

2 Pour 8 ounces of the compound into the bottom of the tub

3 Fill the 2rid wash detergent cup with dishwasher detergent and close the cup 4 Select a normal cycle - must have 2 washes and 4 rinses

5 Allow the dishwasher to complete all washes and rinses It is not necessary to complete the dry cycle

6 DO NOT place dinnerware or silverware in the dishwasher during the cleaning operation,

CA UT/ON:

Because of the obnoxious odor of the cleaner in solution - Do Not open the dishwasher

door until the completion of the last rinse°

How To Remove The

Access Panel

Attach

Screws

Bottom

Access

Panel

Loosen the two bottom attach screws in the access

pane_ Open dishwasher door,

Remove the two top attach screws Close door Access panel can now be removed by puIling straight off

B. INSTALLATION

Portable Dishwasher

Hot Water Connections - Portable Dishwasher

I. Attach the AERATOR ADAPTOR furnished with the dishwasherto the sink faucet.

2. Check the power outlet. A. Will it take the three-prong plug on the power cord?

B. Is the outlet grounded?

CHECKING POWER OUTLET

The dishwasherwilloperateon regularhousecurrent,Do notuseanyotherapplianceon thesame circuit,Use a circuit withatJeasta 15 Ampere,butnotmore thana 20 Ampere fuse.The dishwasherpowercordisathreeprongtypeand

must be pluggedintoa threeholegroundedoutlet°The dishwasherMUST BE GROUNDED forsafeoperation,,Do not, underanycircumstances,removethepowersupplycordgroundprong°

Under Counter Dishwasher Drain, Water, and Electric Supply

I !

FIGURE!

Copper tubing must have a minimum I,D. of 3/8 inch. Sears has a waterline kit which includes all the fittings and instructions you need for mostinstallations.

How much water volume is needed? A minimum flow of 8 quarts of hot water is requiredin 60 seconds - Check this

at your kitchen faucet tap with the aerator removed.

IMPORTANT:

Provide a separate circuit with fuse or circuit breaker rated for at least 15 Amps but not more than

20 Amps.

IMPORTANT:

This Appliance Must Be Permanently Grounded In Accordance With The National Electrical Code and

Local Codes and Ordinances°

When installing the dishwasher: I. Connect (in junction box) incoming black lead to dishwasher black lead; and incomingwhite lead to dishwasher white

lead.

2 Attach grounding wire to green grounding screw

CAUTION:

The joining of aluminum building wire to stranded copper wire leads on the dishwasher involves special problems It should be done only by qualified personnel using material recognized by U/L (or CSA) as suitable

DRAIN. Improper!y installed drain hoses can kink and result in poor washability or failure of the dishwasher to drain Do not use the drain hose supplied with the dishwasher for the water supply line It is not a reinforced hose

and wil! burst under water line pressure

NOTE,"

A properly operating dzshwasher will have approxtma_e/y .2 cups of clean water rematmng in [he [ub at the com-

pletion .of [he cycle. .........

CA UTION:

Be sure to remove plug from disposer inlet before attaching drain hose,

DRAIN HOSE CONNECTED TO DISPOSER OR "y" BRANCH

2"HOLE OR LARGER

SINK X,,T LEFT

FIGURE2

iMPORTANT:

After positioning under the counter, the front leveling legs should be raised slightly higher than the rear legs.

DRAINHOSECONNECTIONTOSINKDRAIN

/2 ! O COPPER TUBING

DRAIN HOSE MUST BE _tGHER THAN DIS

3RANCH

TAILPIECE

S{NF, AT RIGHT

FIGURE3

Sears "Y" Branch Tailpiece and Connector Kit No, 729b makes this connection easy, It includes a!l necessary fittings

and complete instructions,

DRAIN HOSE CONNECTION THROUGH FLOOR

AIR GAP KIT AVAILABLE AT SEARS

2"{OR LARGER) HOLE

LEFTNAND SUPPORT

RIGHTHAND SUPPORT ANGLE

FIGURE4

If the dishwasher drain hose is routed through the floor to a separate trap, the trap must be vented to prevent siphoning, To provide proper venting, install an Air Gap Kit (available at Sears) in the countertop, Route drain hose up to the inlet

side of the Air Gap, Continue drain line from outlet side of Air Gap down through floor to separate trap,

Models Equipped With Installation Module

PLANNING

Determine the rouling for the water supply, eleclrical wiring and drain line before proceeding with the actual in- sin!tarpon so that space conflicts do not occur

Important - Do no1 [oute ptumbing or wiring in front of the motor or dishwasher support channels

CUTTING ACCESS HOLES Access holes in the cabinet sides or floor should be located within the zones shown in Figure 5 The hole for lhe

drain lineshould be 2" diameter minimum The two holes for the electrical and plumbing lines should be 1" d,ameter minimum Keep the electricaland plumbing lines separated

fl!:.....

FIGURE5

INLET VALVE ,JUNCTION BOX ASSEMBLY

Locale the valve and junction box assembly as shown in Figure 6 using the template supplied Attach the assembly 1o the floor through 1he two holes near the junction box (If unable to atlach the assembly to the floor, locale according to the template, connect water and electrical as described below, then connect the assembly to the side base ol the machine with the bracket provided after the machine is in the cabinet )

WARNING: IT IS ESSENTIAL THAT THE ASSEMBLY BE LOCATED CORRECTLY TO MAINTAIN ELECTRICAL

CLEARANCES AND PREVENT DAMAGE DURING DISHWASHER INSTALLATION

ELECTRICAL

All wiring must be in accordance with electrical codes The dishwasher operates on !15 volt, 60 cycle power Pro- vide a separate circuit with a fuse or circuit breaker rated for at least 15 amps bul not more than 20 amps

GROUND1NGINSTRUCTIONS

This appliance must be connected to a grounded metal, permanent, wiring system; or an equipment grounding

conductor must be run with the circui_ conductors and connected to the equipment-grounding terminal A green

ground screw terminal is provided in The junction box Connecting the circuit conductor ground, along with the molded receptacfe green pigtail, automatically grounds 1he dishwasher

install the wiring, routing it within the zones shown in Figure 5 Do not run i! across in front of the motor Connect lhe circuit black 1o the machine black, and circuil white to the machine white, using wire nuts If house wi_ing is

aluminum, a UL or CSA listed antioxidant compound must be used with listed aluminum-to-copper connectors Connect the circuit conductor ground wire under the green ground screw Refer to Figure 6 Replace the junction

box cover

CIRCUIT CONDUCTOR GROUND WIRE

¢7IRING

GREEN GROUND

SCREW

FIGURE6

WA] ER SUPPLY

Plumbing must comply with local codes It is recommended that a shul-off valve be installed in the line from the

supply to the dishwasher The water supply must be able lo supply a minimum of 9 quarts in one minute Route the

Ime, as shown in Figure 7 (Refer to Figure 5 for permissible routing areas) Do not run it across in front of the motor Piping must not be kinked The connection to the valve is made with a 3/8" male pipe thread right angle adapter Assemble the adapter to the valve, using pipe compound or teflon tape, with a wrench on the adapler and a wrench

over the metal bracket enclosing the fitting on the valve If solder connections are used. use care to see that valve is not overhea!ed CAUTION! Qverheating witl da0qage the valve Clean all ioreign matedal from the pipe and threads

before maldng final connections

IMPORTANT:

TURN ON THE WATER SUPPLY AND CHECK ALL PLUMBING AIqD DISHWASHER CONNECTIONS FOR WATER

LEAKS.

WARNING!

Do not have line pressure Io the water valve in freezing temperatures during construction, remodeling, elc Do not use the drain hose supplied with the dishwasher for the water supply line It is not a reinforced hose and will burst under water line pressure

CAUTION

To prevent damage to valve,apply

wrench to hex on valvemetal bracket and hold securely while installing

rigflt angle adapter,,

SHUT OFF

VA LV E

HOT WATE

LINE

SUPPLY

I I

ALTERNATE HOT WATER

ENTRY SHOWN BY

DDT_ED LINE

_REEN GROUND"

SCREW

MOLDED REO EPTACL

RIGHT ANGLE ADAPTER -3/8

MALE PIPE THREAD

FIGURE7

DRAIN

Referring to Figures 8 and 9. install the drain connection parts (Y branch tail-piece, disposer adapter, air gap, etc ) in the location selected Instali the drain hose corner support in the corner of the cabinet next to the dishwasher

directly above the 2" access hole The top of the support should be 30" above the kitchen floor 124-' above cabinet

floor) IMPORTANT:

THE DRA!N LOOP MUST BE FIXED ATA lvl!N,!MUM HEIGHT,,QF,,,32 INCHES BY USE OF A SUITABLE CLAMP OR

SUPPORT._ONE -IYPE OF WHICH IS SHOWN BELOW.

Corner Support Bracket (Furnished

Drain Hose (Furnished)

"'Branch Tailpie(:

Entry MUST be

above trap _1_ t

Trap P or S

SINK AT LEFT

Route the hose from the dishwasher cabinet through 1he 2" access hole, then behind the corner support to the drain and connect Be sure all bends are smooth and the hose is adequately supported The free end of the hose should

extend into the dishwasher cabinet 20" if the hole is on the left side, and32" if the hole is on the right side Cut the hose to length, being sure cut is square

Trap P or S

SINK AT RIGHT

3O"Top of Corner Support

Bracket To Floor

2 Access Hole--

FIGURE8

Corner Support Bracket (Furnished)

Trap P or S

Air Gap Kit {Available at Sears}

1 Required by some local plumbing

codes when connecting 10 a disposer

2 Required when connecting 7o a separate

Irap benea'lh 1he floor

To Separate Trap

Beneath Floor

SINK AI LEFT

SINK AT RIGHT

FIGURE9

HOW TO POSITION, ALIGN, AND LEVEL, YOUR DISHWASHER

FIGUREIO

Move your dishwasher, as necessary, to:

Align the front of the dishwasher, as close as possible, with the front of the cabinets,

Make the space between the dishwasher and the adjoining cabinets the same on each side and the same width top

to bottom, Use the stubby screwdriver or 7/=32" socket to adjust the teveling screws, They must be set firmly against Lhe floor,

F $oc_r anchori_g with _' lag screw_

TWO WAYS TO ANCHOR YOUR DISHWASHER

_ Toe plate assembtv

FIGURE11

You MUST anchor your dishwasher to keep it from tilting when the door is opened or closed.

Countertop Anchoring:

1. If the countertop mounting bracket flange is }onger than you need, mark it, remove it, and saw off the unneeded part. 2, Adjust leveling screws, if necessary, so that the mounting brackets touch the underside of countertop

3 Screw the mounting bracket firmlyto the counter[op, 4 Open and dose the dishwasherdoor°There should be no interferenceor scratchingas itmoves,

Floor Anchoring: Difficult procedure. Use only where the countertop bracket cannot be used. 1 Use 1/4" lag screws through the holes provided as illustrated

2. Use expansion fasteners if the floor is concrete After the anchoring is completed, replace the toe plate assembly You will notice that the vertical height of the toe plate is adjustable to fit neatly against your floor or floor covering

INCREASE

DECREASE

_"_-.,-_OEPLATEADJUS]MENTSCREWS

FIGURE12

C. WJASH SYSTEM

FIGUREI3

Two Level Wash Feature

A separate spray tube or rotating spray arm assures excellent washability in the upper rack, and another rotating spray arm thoroughly washes all dishes in the lower rack This arrangement permits complete flexibility of ioading

without concern of blocking the water pattern to el;her rack See Figure t3

Water Charge (See Figure 14)

Water enters the dishwasher through the solenoid operated water inlet valve

The valve is energized through the timer Water will enter the machine 1or approximately one minute (All dish- washers are time filled ) Some models fill for 90 seconds Also some models have 45 second water charges built

into water miser and normal wash cycles Refer to tech sheet in console

NOTE:

The float switch controls the amount of water entering the dishwasher The fill is also time controlled If the

timer fails to advance or the water pressure is extremely high, the float switch will open the circuit to the water inlet valve thus preventing a flood If the float sticks or does not cut power to the valve, the timer acts as a safety

_oturn power off after the allotted fill time The float and timer switch will not protect against a mechanical failure of the valve

To satisfactorily clean dishes, the 24" dishwasher must have a water charge of 8 to 11 quarts The !8" models

require 6 5 to 8 quarts if poor washability is experienced, be certain to check for the correct water charge

FLOAT

NORMAL

SWITCH

FIGURE14

2 Testing Water Charge Level

To check for proper water level, pour the minimum charge ol_8 quarts of water into the tub and make a reference mark with a grease pencil or crayon at the edge of the waterline Then pour in an additional 1 Y_,quarts of water to make the maximum charge, and make another reference line at the edge of the water line, Set the timer to a portion of the operating cycle for "drain" and allow the drain pump to pump out the water Allow the time to ad- vance into a )_;fill" period of the operating cycie and allow the normal amount of water to fill the tub After the

water inlet valge has shut off, compare the edge of the water line with the reference marks made above The water charge must be belween the two lines Remove the marks after completing this test The water level should cover

tile heating element

ttttt

t t

FIGURE15

Spray Arm Assembly

The spray arm is mounted to the upper pump housing_Water from the sump is pumped through the upper pump

housingwhere it isdirected to the spray arm..The water is discharged from ports in the spray arm as shown in Figure t5..

The velocityof the water discharged from the ports and the angle of the port opening causesthe spray arm to rotate. The rotation of the spray arm assures the distribution of water to all corners of the tub,

A stuck or split spray arm can cause ieaks or poor washability. Oncomplaints of this type, inspect the spray arm closely for a possible split seam. Be sure the spray arm turns freely on the pump housing. If binding is encountered, it wilt be necessary to replace the pump housing or spray arm, or both°

5pray Tube

The spray tube or middle spray arm directswater to the upper rack to assure complete washing and rinsing of all

plates and glassware. Water ispumped from the sump, by the lower impeller, through a hoseconnected to the spray tube or middle spray arm,

On models having the upper rolo rack, be certain the racks turns freely. Unsatisfactory washing of the items in the upper rack will result if the rack binds, is prevented from rotating by a tall item in the lower rack, or water is not being discharged from the spray tube..

Periodic cleaning of the spray tube is recommended Onemethodis shown is Figure 16. The loosened particles may

be flushed from the tube by operating the dishwasher in a wash cycle with the cap removed,

PUSHLODGEDPARTICLES

UPPERSPRAYTUBE

SCREWTHREADS

FIGURE16

Three Level Wash System

The upper or third level wash system used in certain models is intended to give increased wash efficiency for articles in the upper rack° See Figure ]7 A & B.

SPRAY 'iUBE

Y ADAPIDR

FIGURE17A FIGURE17B

The water for the system in 17A isbled off from the middle wash system by means of a "Y" adapter in the main

supply tube and a branching "L" shaped supplytube from thatpointtothe lop centerof the tub In 17B the top spray

arm is supptied directly from 1he pump by means of an external supply tube The tower in the center of the lower spray

arm telescopes upward washing the underside of the upper rack To remove the tower unscrew the lower section of

the tower counterclockwise

A Removal of Mtddle Spray Arm

1 Remove stainless steeI cotter pin in lower end of plastic spray arm spindle underneath the black plastic supply

arm

2 The spray arm and spindle can now be lifted off the supply arm

Removal of Upper Spray Arm Only 1 From below, in tub, remove two screws which hold spray arm and bearing assembly to plastic distributor

(See Figure 18 )

2 The assembly will then drop loose If il is desired to remove the arm from the bearing assembly, the 1we

screws the1 hold them together are nowraccessibte

NOTE

In Mid- 1980 [he design of the third ,spray arm was changed The spray arm is removed by removing the center

moun_ing screw [See Figure 79]

BEARING ASSEMBLY

ARM

;HER

(_ SCREW

FIGURE18

FIGURE19

Two Level - Compact Models

The top spray arm water supply system on all 18" (compact) dishwashers is completely external of the wash chamber, A hose from the back side of the pump housing runs behind the back center of the wash chamber (tub) up to the delivery tube

To remove: (See Figure 20)

1, Disconnect power supply to dishwasher, 2 Loosenandremoveclamp attaching deliveryhoseto pump housing /VOTE: Water remaining in hoseand pump should

be caught in a bowl

3 Remove four (4) screws that attach the delivery tube to the tub assembly,

4 Remove hose by pulling slowly through the opening in rear of tub.,

Reverseprocedure to reinstalf and check for leaks and kinks,

DELIVER

TUBE

HOSE

STEP 2

STEP

FIGURE20

Water Inlet Valve

The water inlet valve is solenoid operated and when energized permits a constant controlled flow of water to enter the dishwasher tub, The valve is designed to operate over a pressure range of 20 pounds per square inch minimum to 120 pounds per square inch maximum, The frequency and length of Lime the valve is operating is controlled by the timer, Water inlet valves differ only in amount of water they deliver (flow rate) which is governed by the aperture size in the flow washer See Figure 21, Some models may have a three orifice flow washer

CONCAVE

IDENTIFICATION MARKINGS

"_WATER

' __1 '_-" FLOW

SIDE

FIGURE21

Operation

Figure 22 shows a cross section of the water inlet valve in its closed position and Figure 23 shows it in its open position The water pressure at B and C has equalized because the bleed hole opening permits water to flow from

B to C Pressure at A is atmospheric (Figure 2.2)

The valve remains closed because the higher water line pressure at C is greater than the atmospheric pressure at A. When the solenoid coil is energized by the timer, the plunger is withdrawn from the diaphragm opening Water in compartment C wilt then escape through the diaphragm opening causing the pressure in the compartment to fall to almost atmoshpheric pressure, The higher water line pressure at B forces the diaphragm away from its seat, opening the valve Water then flows through the screen under the diaphragm and out the valve.

PLUNGER

HOLE

LINE WATER PRESSURE

ATMOSPHERIC PRESSURE£ B

CLOSEDPOSITION

WASHER

FIGURE22

PLUNGER

DIAPHRAGM

B -FLOW WASHER

FIGURE23

OPEN POSI'[ION

When the solenoid releasesthe plunger, the hole in the center of the diaphragm is sealed. Water then flows through

the bleed hold in the diaphragm until the pressure in compartment C rises to water line pressure. Since the area of the diaphragm at water line pressurein compartment Cis greater than the area at water finepressure in compartment B, the diaphragm is forced closed. The pressure at A is always lower than full line pressure because water passing

through the valve is escaping to the open air.

Testing

To test operation of water inlet valve, place the leads of a volt meter across the termina{s of the solenoid in any fill phase of the operating cycle where the water inlet valve should be energized If the meter indicates tine voltage, water should flow into the tub If water does not flow into the tub, either the water inlet valve is defective or the water supply is inadequate Make certain the hot water faucet is fully on If the water supply is not at fault,

the water inlet valve is defective

Sen/zcing

To Clean Operating Parts of the Vaive:

! Remove valve bracket from tub or installation module

2 Remove 4 screws holding solenoid, valve body and bracket together

3 Remove the plunger housing, spring and plunger 4 Check the parts for defects, dirt particles or for formation of lime 5 Check 1o make sure the tiny bleed hoies in the diaphragm are not clogged See Figure 24 Clean bleed holes, if

necessary, using a pin or needte

BLEED HOLES

FIGURE24

Clean the screen mesh of any rust particles Use running water to remove any large particles; then, complete the iob by blowing screen clear The screen mesh must be absolutely clean and free of any damage

Check flow washer for wear or damage When reinstalling the flow washer, position i1 in the valve so that the markings on the washer face the incoming flow of "water.

NOTE

The Timer Controls the Operazton of the Water Inlet Valve and therefore, the amount of water emenng the

machine The Valve should be energzzed for 45 to .90 ._econds depending on model and cycle selected The float switch will .shut the water off at the proper level The Timer controls the wa[er charge on short fills and

acts as a safety on full water charges

Water Inlet Valve Kit

Undercounler 808668

Portable 808667

KI'[S INCLUDE: t water vane

This ki_is used for several applications Use the flew washer in this kit which wi_! provide the correct flow rate for your dishwasher

UNDERCOUNTER

METAL WASHER"

FLOW WASHER--'_

PLASTIC _ ]

F:RETAIN E __

(__ SCREEN

! metal washer

4 flow washers

CURVED SIDE

t plastic retainer 1 screen

2 terminal insulators

t sealer washer (undercounter only)

Install parts in the order illustrated

PORTABLE

METAL

FLOW WASHE

PLASTIC RETAINER

SCREEN

SEALER WASHER

1 Remove plug from valve, discard Remove any foreign particles from valve

2. install flat metal washer,

3, Choose correct flow washer from the chart. =Fhereare identification markings Qn the fiat side of

the flow washer° Install the flow washer with identification markings facing you Curved side should be against the ftat metal washer.

IDENTIFICATION

MARKING_

METAL

WASHER

2,0,2,5

_af/min

175_-lo%

1,6 Z 10%

DISHWASHER

WIDTH

24'; IB" '"

FILL TIME

-60sec,(gO see

---'-----1 45 sec_

F---

ORIGINAL VALVE

Whiiei_'oeo

E ....

"Yellow Lt, Blue Red

Biue

NOTE: make sure the correct flow washer is used.

*Some models with 90 sec. fill time use an abbreviated water fill (45 sec) on certain cycles. If the valve on the dishwasher is pink, it is a replacement valve, Use the same flow washer as in the valve Refer to dishwasher width vs, fill time to make sure it is the correct flow washer

Do not rely on original valve color only Compare dishwasher fill time and dishwasher width to

4, Install plastic retainer into valve with center protrusion facing you, Push untii it snaps into the groove

cut into the body of the valve

Press screen into valve, being careful not to crush or change the shape of the screen,, This is important

to keep dirt particles out of the valve tha't will cause it to malfunction,

The solenoid and bracket on this valve may have to be rotated in relation to the vatve body to match the original valve as illustrated, You need only to take three of the four screws out to rotate the

solenoid and bracket

7., Install the sealing washer on undercounter valves,

8, Mount the valve to the bracket or frame of the dishwasher_

9. Recheck selection of flow washer by operating dishwasher through the fill phase° Make sure fill time is correct for the flow washer you have selected,

Side Water Inlet, Steam Trap and Venting

The side water inlet shown in Figure 25A provides an effective steam trap at all times and eliminates vapor escape during any phase of the dishwashing operation The vapor is blocked from escaping by the water trapped in the

bottom of the side water inlet

The side water inlet assembly fits into a bracket on the side of the tub The plastic nut secures the assembly to the tub Removal of the nul from inside the tub allows the inlet unit to be easily removed from the botlom of the

dishwasher

PLASTICNUT I

-,..

WA1ERiNLETASSEMBLY

FIGURE25B

TOWATERINLETVALVE

SIDE WATER INLET

FIGURE25A

The water inlet assembly shown in Figure 25B combines the fill and blower opening in the lub On models without forced air drying, the lower portion of the housing and blower motor is not installed

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