Moyer Diebel 201HT Installation & Operation Manual

Installation/Operation Manual with Service Replacement Parts

Issue Date: 10.4.10

Manual P/N 0512240 rev. I

For machines beginning with S/N W11948 and above

Dishwasher serial no.

www.moyerdiebellimited.com

Undercounter

Dishwashers

(with pumped nal rinse)

Models:

201HT  High temperature w/booster

201HTN High temperature w/o booster

201LT  Low temperature chemical sanitizing

401HT High temperature w/booster

401HTN High temperature w/o booster

501HT  High temperature w/booster

501HTN High temperature w/o booster

501LT Low temperature chemical sanitizing

Printed in USA

2674 N. Service Road, Jordan Station

Ontario, Canada L0R 1S0

905/562-4195 Fax: 905/562-4618

Toll-free: 800.263.5798

3765 Champion Boulevard

Winston-Salem, NC 27105

336/661-1992 Fax: 336/661-1660

Toll-free: 800.858.4477

401HT

201HT

501HT

The dishwasher data plate

is located on the left front corner

of the front access panel.

For future reference, record your dishwasher information in the box below.

Model Number__________________________ Serial Number_______________________

Voltage________________Hertz_____________ Phase__________________

Service Service Agent __________________________________ Tel:______________________

Moyer Diebel Parts Distributor _________________________________ Tel:______________________

ATTENTION:

The dishwasher model no., serial no., voltage, Hz and

phase are needed to identify your machine.

Please have this information on-hand

if you call for service assistance.

Toll-free: 800/ 263-5798

Tel: 905/ 562-4195

Fax: 905/ 562-4618

email: [email protected]

Toll-free: 800/ 858-4477

Tel: 336/661-1992

Fax: 336/ 661-1660

email: [email protected]

National Service Department -USA

National Service Department - Canada

The USGBC and the CaGBC Member Logos are trademarks owned by the U.S. Green Building Council and The Canadian Green

Building Council, respectively, and are used by permission. The logos signify only that Moyer Diebel is a USGBC member and a

CaGBC member; USGBC and CaGBC do not review, certify nor endorse the products or services offered by its members.

NO POSTAGE

NECESSARY

IF MAILED

IN THE

UNITED STATES

BUSINESS REPLY MAIL

FIRST-CLASS MAIL PERMIT NO. 2101 WINSTON-SALEM, NC

POSTAGE WILL BE PAID BY ADDRESSEE

MOYER DIEBEL

PO BOX 4183

WINSTON-SALEM, NC 27119-0981

ATTENTION:

Complete the back of the POSTAGE PAID WARRANTY CARD below, then cut along

the dashed lines and mail immediately to make sure that your machine warranty is validated.

USE CANADIAN WARRANTY CARD IN CANADA AND USA WARRANTY CARD IN THE UNITED STATES.

IMPORTANT IMPORTANT

Model

Serial #

Date of Installation:

Company Name:

Telephone #: ( ) ---

Contact:

Address:

Telephone #:

Contact:

Installation Company:

(Street) State or Province Zip Code

This Card Must Be Returned to Validate Machine Warranty:

WARRANTY REGISTRATION CARD

IMPORTANT IMPORTANT

Model

Serial #

Date of Installation:

Company Name:

Telephone #: ( ) ---

Contact:

Address:

Telephone #:

Contact:

Installation Company:

(Street) State or Province Zip Code

This Card Must Be Returned to Validate Machine Warranty:

WARRANTY REGISTRATION CARD

i

Revision Revised SerialNumber Revision 

Date Pages Effectivity Description



9.15.06 All W11948  Releasedrstedition

3.22.07 59 W11948  RevisedSchematic

    SolidStateTimerService

11.26.07 iii,3-6,28-29, W14326  Installation,schematics

 30-31,32-33,   MTB,Boosterinterlock

 61-66   2KWwashtankHeater

12.1.07 32-33 W14478  Boostercontrolthermostat

    P/Nchangedfrom109069

    to0512108

6.10.09 All W14236  Releasedrev.Dofmanual



6.10.09 42-43 W081217467  AddedP/N0712105Timer

    Bd.toPartsList



6.10.09 70 W081217467  AddedTimerBd.

    DiagnosticInstructions

RevisionHistory

 RevisionHistory

• TheRevisionHistorycancontainpartnumberchanges,newinstructions,or

informationthatwasnotavailableatprinttime.

• Wereservetherighttomakechangestotheseinstructionswithoutnoticeandwithout

incurringanyliabilitybymakingthechanges..

• Equipmentownersmayrequestarevisedmanual,atnocharge,bycalling

1(800)858-4477intheUSAorbycalling1(800)263-5798inCanada.

6.10.09 28-29 W081217467  AddedThermostat

    Adaptertobooster

10.5.09 30-31 W14236  ChangedContactorP/N

   from107369to112518

2.25.10 15 W100120006  Revised401HTOperation

   

2.25.10 28-29 W100120006  Revised401HTBooster

    addingRinse 

    ThermometerTee

2.25.10 46-47 W100120006  RevisedThermometerP/N's

2.25.10 52-53 W100120006  RevisedFrontPanelP/N's

10.4.10 49 W100120006 ChangedItem13P/Nfrom

    0312183toP/N0312181

ii

LimitedWarranty

LIMITED WARRANTY

MoyerDiebel,P.O.Box4149,Winston-Salem,NorthCarolina27115,andP.O.Box301,2674N.ServiceRoad,

JordanStation,Canada,L0R1S0,warrantsmachines,andparts,assetoutbelow.

Warranty of Machines:MoyerDiebelwarrantsallnewmachinesofitsmanufacturebearingthename  

"MoyerDiebel"andinstalledwithintheUnitedStatesandCanadatobefreefromdefectsinmaterialandworkman 

shipforaperiodofone(1)yearafterthedateofinstallationorfteen(15)monthsafterthedateofshipmentby

MoyerDiebel,whicheveroccursrst.[Seebelowforspecialprovisionsrelatingtoglasswashers.]Thewarranty

registrationcardmustbereturnedtoMoyerDiebelwithinten(10)daysafterinstallation.Ifwarrantycardisnot

returnedtoMoyerDiebelwithinsuchperiod,thewarrantywillexpireafteroneyearfromthedateofshipment.

MoyerDiebelwillnotassumeanyresponsibilityforextracostsforinstallationinanyareawherethereare

jurisdictionalproblemswithlocaltradesorunions.

Ifadefectinworkmanshipormaterialisfoundtoexistwithinthewarrantyperiod,MoyerDiebel,atitselection,

willeitherrepairorreplacethedefectivemachineoracceptreturnofthemachineforfullcredit;provided;

however,astoglasswashers,MoyerDiebel'sobligationwithrespecttolaborassociatedwithanyrepairsshallend

(a)120daysaftershipment,or(b)90daysafterinstallation,whicheveroccursrst.IntheeventthatMoyerDiebel 

electstorepair,thelaborandworktobeperformedinconnectionwiththewarrantyshallbedoneduringregular 

workinghoursbyaMoyerDiebelauthorizedservicetechnician.DefectivepartsbecomethepropertyofMoyerDiebel.

UseofreplacementpartsnotauthorizedbyMoyerDiebelwillrelieveMoyerDiebelofallfurtherliabilityinconnection

withitswarranty.InnoeventwillMoyerDiebel'swarrantyobligationexceedMoyerDiebel'schargeforthemachine. 

ThefollowingarenotcoveredbyMoyerDiebel'swarranty:



 a. Lightingofgaspilotsorburners.

 b. Cleaningofgaslines.

 c. Replacementoffusesorresettingofoverloadbreakers.

 d. Adjustmentofthermostats.

 e. Adjustmentofclutches.

 f. Openingorclosingofutilitysupplyvalvesorswitchingofelectricalsupplycurrent.

 g. Cleaningofvalves,strainers,screens,nozzles,orspraypipes.

 h. Performanceofregularmaintenanceandcleaningasoutlinedinoperator’sguide.

 i. Damagesresultingfromwaterconditions,accidents,alterations,improperuse,abuse,   

  tampering,improperinstallation,orfailuretofollowmaintenanceandoperationprocedures.

 j. WearonPulpercutterblocks,pulsevanes,andaugerbrush.

 Examplesofthedefectsnotcoveredbywarrantyinclude,butarenotlimitedto:(1)Damagetotheexterioror 

 interiornishasaresultoftheabove,(2)Usewithutilityserviceotherthanthatdesignatedontheratingplate, 

 (3)Improperconnectiontoutilityservice,(4)Inadequateorexcessivewaterpressure,(5)Corrosionfrom

 chemicalsdispensedinexcessofrecommendedconcentrations,(6)Failureofelectricalcomponentsdueto

 connectionofchemicaldispensingequipmentinstalledbyothers,(7)Leaksordamageresultingfromsuch

 leakscausedbytheinstaller,includingthoseatmachinetableconnectionsorbyconnectionofchemical

 dispensingequipmentinstalledbyothers,(8)Failuretocomplywithlocalbuildingcodes,(9)Damage

 causedbylabordispute.

Warranty of Parts:MoyerDiebelwarrantsallnewmachinepartsproducedorauthorizedbyMoyerDiebeltobefree

  fromdefectsinmaterialandworkmanshipforaperiodof90daysfromdateofinvoice.Ifanydefectin

  materialandworkmanshipisfoundtoexistwithinthewarrantyperiodMoyerDiebelwillreplacethedefective

  partwithoutcharge.

DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. MOYER DIEBEL'S WARRANTY IS ONLY TO THE

EXTENT REFLECTED ABOVE. MOYER DIEBEL MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUD-

ING, BUT NOT LIMITED, TO ANY WARRANTY OF MERCHANTABILITY, OR FITNESS OF PURPOSE. MOYER DIEBEL

SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE

THE EXCLUSIVE REMEDIES FOR ANY DEFECTS FOUND TO EXIST IN MOYER DIEBEL DISHWASHING MACHINES

AND MOYER DIEBEL PARTS, AND ALL OTHER REMEDIES ARE EXCLUDED, INCLUDING ANY LIABILITY FOR

INCIDENTALS OR CONSEQUENTIAL DAMAGES.

MoyerDiebeldoesnotauthorizeanyotherperson,includingpersonswhodealinMoyerDiebeldishwashingmachines

tochangethiswarrantyorcreateanyotherobligationinconnectionwithMoyerDiebelDishwashingMachines.

iii

RevisionHistory ...........................................................................................................i

LimitedWarranty ...........................................................................................................ii

ModelDescriptions ...........................................................................................................iv

Installation..............................................................................................1

 Receiving....................................................................1

 ElectricalConnections................................................2

 WaterConnections.....................................................6

 DrainConnections......................................................7

Initial Start-up..........................................................................................8

 BoosterFillSwitch......................................................8

 CheckList...................................................................9

 ChemicalDispensingPumps......................................10

  Priming..............................12

  Adjustments.......................13

 

Operation................................................................................................................ 14

 NormalWashMode....................................................14

 ScrubMode(extendedwash)....................................15

 RinseSentryMode.....................................................15

 DrainOperation..........................................................16



Cleaning and Maintenance........................................................................17



Cleaning......................................................................17

 De-liming.....................................................................19

 Maintenance...............................................................20

 Troubleshooting..........................................................21

Service Replacement Parts.......................................................................23

Electrical Schematics............................................................................................ 55

Timer Chart

.............................................................................................62

Basic Service

..........................................................................................63

 TableofContents

TableofContents

Model201,401,501UndercounterDishwashers

iv

ModelDescription

201-HT, 401-HT, and 501-HT Models

Pumpednalrinsehightemperaturesanitizingdishwasher

withbuilt-in40°Frisestainlesssteelelectricbooster.

SinglePhasetoThreePhaseFieldConversion.

201-HTN, 401-HTN, and 501-HTN Models

Pumpednalrinsehightemperaturesanitizingdishwasher

withoutbuilt-in40°Frisestainlesssteelelectricbooster.

201-LT, 501-LT Model

Pumpednalrinselowtemperaturechemicalsanitizingdishwasher

with3built-inchemicaldispensingpumps.

Optional Equipment (consultfactory)

70°F/39°Crisebuilt-inboosterheater

70°F/39°Criseboosterheaterelement-P/N111233,Gasket-P/N109985

1-RDTRight-handsink-P/N403562

1-RDTLeft-handsink-P/N403561

17"Stand-P/N0708757

17"Storagecabinet-P/N0703593

6"Stand-P/N0712393

Pegdishrack-P/N101285

Flat-bottomdishrack-P/N101273

Drainwatertemperingkit-0712382-1

1

NOTE:

The installation of your dishwasher must be performed by qualified service personnel.

Problems due to improper installation are not covered by the Warranty.

1. Inspect the outside of the dishwasher carton for signs of damage.

2. Remove the carton and inspect the dishwasher for damage.

3. Check for any accessories that may have shipped with your dishwasher.

4. Turn to the front of this manual and complete the warranty card.

Immediately mail the warranty card to validate your warranty.

5. Move the dishwasher near its permanent location.

CAUTION:

Be careful when lifting and moving the dishwasher to prevent damage to the machine.

NOTE:

The installation of the dishwasher must comply with local health codes.

6. Compare the installation site utility connections with the dishwasher utility connections and

make sure that they are the same.

7. The dishwasher can be installed as a free-standing unit or under a built-in counter-top.

The typical counter-top height in most locations is 34" [86cm].

8. Under counter installations should provide storage space for the dishwasher chemical supply

containers. Containers must not be

placed higher than 10" [25cm] above the oor.

9. Chemical supply containers should be placed as

close to the machine as possible.

10. Place the dishwasher in its permanent location.

11. The dishwasher has 4 adjustable feet for

leveling.

12. Level the dishwasher front-to-back and

side-to-side.

Installation

Receiving

Counter-top

Wall

3" [8cm] Min.

34"

[86cm]

Min.

Floor

2

Installation

Electrical Connections

For Model 201HT, 401HT, and 501HT machines beginning with S/N 14236 and above

L1 L2 L3 N

208-230

VAC

208-230

VAC

208-230 VAC

115VAC

GRD

(For machines

beginning with S/N 14236 and above)

THREE PHASE POWER CONNECTION

Model 201HT, 401HT, 501HT

HOW TO CONNECT 3 PHASE POWER

1. Check the data plate on the front of the

dishwasher for the phase of the machine.

.

2. Remove the lower access panel.

3. Pull power connection box forward and out.

4. The Main Terminal Block has terminals for

L1, L2, L3, Neutral and Ground.

5. Connect ground, then connect

L1, L2, L3 to 208-230VAC.

6. Connect a current carrying neutral to N.

7. Main power connections are complete.

If the data plate says the machine is 3 Phase,

then connect a 3 PH power supply.

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ATTENTION

Models 201 HTN, 201LT, 401HTN, 501HTN, 501LT are equipped with a 4 ft. power cord and plug.

These models only require a 115VAC,15A receptacle.

1. Refer to the connection diagrams below.

2. Models 201HTN /LT, 401HTN, 501HTN /LT are equipped with a

4 ft. power cord/plug and only require a 115VAC,15A receptacle.

3. Models 201 HT, 401HT, and 501HT 1 PH machines require a

3-wire plus ground supply which includes a current carrying neutral.

4. Models 201 HT, 401HT, and 501HT 3 PH machines

require a 4-wire plus ground supply which includes a current carrying neutral.

5. Power connections are made at the Main Terminal Block (MTB) which is

located at the lower right-hand side of the dishwasher directly behind the

lower front access panel.

6. Remove the MTB cover and 2 screws holding the MTB to the machine base.

Then, pull the MTB up and forward to make the electrical connections.

7. Provide a 3 ft. service loop in the supply cable for servicing.

8. Re-install the MTB and the lower front access panel to complete the installation.

Pull the MTB out to wire

main incoming power.

3

Installation

Electrical Connections

WARNING:

Electrocution or serious injury may result when working on an

energized circuit.

Disconnect power at the main breaker or service disconnect

switch before working on the circuit.

Lock-out and tag the breaker to indicate that work is being

performed on the circuit.

1. Refer to the connection diagrams above.

2. Models 201HTN /LT, 401HTN, 501HTN /LT are equipped with a 4 ft.

power cord/plug and only require a 115VAC,15A receptacle.

3. Models 201 HT, 401HT, and 501HT 1 PH machines require

a 3-wire plus ground supply which includes a current carrying neutral.

4. Models 201 HT, 401HT, and 501HT 3 PH machines require a

4-wire plus ground supply which includes a current carrying neutral.

5. Power connections are made at the Main Terminal Block

(MTB) which is located at the lower right-hand side of the

dishwasher directly behind the lower front access panel.

6. Remove the MTB cover and 2 screws holding the MTB

to the machine base. Then, pull the MTB up and forward

to make the electrical connections.

7. Provide a 3 ft. service loop in the supply cable for servicing.

8. Re-install the MTB and the lower front access panel to

complete the installation.

Main Terminal Block (MTB)

shown pulled out of dishwasher front

to wire main incoming power

For machines built prior to S/N 14236

ATTENTION

A qualified electrician must connect the main incoming power to the dishwasher in accordance with all local

codes and regulations or in the absence of local codes in accordance with the National Electrical Code.

Note:

Models 201 HTN, 201LT, 401HTN, 501HTN, 501LT are equipped with a 4 ft. power cord and plug.

These models only require a 115VAC,15A receptacle.

L1 L2 N

208-230

VAC

115VAC

L1 L2

115VAC

15A

4 ft. power cord w/plug supplied

Model 201HTN / LT, 401HTN, 501HTN /LT

All S/N's

Model 201HT, 401HT, 501HT

Prior to S/N 14236

4

Electrical Connections (continued)

For Models 201HT, 401HT, and 501HT beginning with S/N 14236 and above

Dishwashers shipped from the factory wired for 1 phase operation can be changed to 3 phase

operation by following the procedure below.

1. Disconnect the main incoming power at the main service disconnect breaker or switch.

2. Remove the lower front access panel,

3. Remove the booster heater element cover.

4. Locate the 1H3 booster heater wire stored on the right-side of the booster tank.

5. Disconnect the existing booster heater wires and change the booster heater element

jumpers as shown in the illustration below

6. Connect wires 1H1, 1H2, and 1H3 as shown.

7. Re-install the booster heater cover.

8. A replacement 3PH data plate is stowed on the back of the lower front access panel.

Remove the existing 1PH data plate on the front of the panel with the new 3PH data plate.

Discard the 1PH data plate.

9. Contact a qualied electrician to change the incoming service power to 3PH. An illustration

of the power connections on the Main Terminal Block is on the next page.

WARNING:

Electrocution or serious injury may result when working on an

energized circuit.

Disconnect power at the main breaker or service disconnect

switch before working on the circuit.

Lock-out and tag the breaker to indicate that work is being

performed on the circuit.

1H1

1H2

1H3

Booster Heater

Connected for 1PH

1H1

Booster Heater

Connected for 3PH

1H2

1H3

Wire not

connected

Booster heater element connections shown for 1 phase and 3 phase operation.

Booster Heater Element

Field Conversion from Single to Three Phase Operation

Installation

5

Installation

Booter Heater/Wash Tank Heater Interlock Circuit

For Model 201HT, 401HT, 501HT dishwashers beginning with S/N 14236 and above.

The booster heater/wash tank heater interlock circuit removes power from the wash tank heater whenever

the booster heater contactor energizes. The illustration below shows how the booster heater contactor is

wired. The booster heater contactor is located behind the lower front access panel.

Interlock Circuit Operation

1. The dishwasher lls with water when the

main power switch on the dishwasher is turned on.

The booster heater thermostat calls for heat

which energizes the booster heater contactor.

2. The auxiliary contact on the top of the contactor

opens and removes power from the wash tank

heater.

3. When the booster heater thermostat is

satised, the booster heater contactor de-

energizes and the auxiliary contacts close

applying power to the wash tank heater.

4. This operation is repeated whenever the

booster heater calls for heat.

To booster

heater contactor

1PH

208-230VAC

To

Auxiliary

Contactor

115VAC

No power when booster

heater is connected for 1 PH

No power when booster

heater is connected for 1 PH

L1 L2 L3 N

Main Terminal Block (MTB)

Booster Heater Element

Field Conversion from Single to Three Phase Operation (continued)

ATTENTION ELECTRICIAN:

The Main Terminal Block (MTB) is a 4-wire

connection block which includes a current-carrying

neutral. The block can be connected for 3PH or

1PH depending on how the booster heater heater is

wired ( see the previous page). Refer to the diagram

to the right and connect the main incoming electric

service accordingly. The data plate on the lower

front cover of the dishwasher provides the correct

power requirements.

Contact the local authorized service agent if there

are any questions concerning the proper power

connections.

To wash

tank heater

115VAC

From

main

terminal block

115 VAC

From

main

terminal block

1 PH

208-230VAC

No power

when booster

heater is

connected for

1 PH

No power when booster

heater is connected for 1 PH

L1

L3

L1

N

L2

To booster heater

1 PH 208-230VAC

1H2

1H3

1H1

Auxiliary

Contactor

Booster Heater

Contactor

6

Water Connections

1. All models have a 6 ft./1.8 m exible hot water ll hose with a 3/4" female garden hose

connector.

2. A 1/2" or larger main incoming supply line should be installed to the dishwasher.

3. A 1/2" or larger shut-off valve should be installed in the main water supply as close to the

dishwasher as possible for service.

4. All models have a built-in ow control. The incoming hot water supply pressure must be

between 25-95 psi/173-655 kPa.

5. For Models 201HT, 401HT, and 501HT:

For the 40°F/ 22°C rise booster, the hot water supply must provide a minimum of

140°F/60°C, measured at the dishwasher.

For the 70°F/39°C rise booster the hot water supply must provide a minimum of 110°F/43°C

measured at the dishwasher.

6. For Models 201HTN, 401HTN, 501HTN:

The hot water supply must provide a minimum of 180°F/82°C, measured at the dishwasher

for The incoming hot water supply line must be a 1/2" or larger.

7. Models 201LT, 501LT:

The hot water supply must provide a minimum of 140°F/60°C, measured at the dishwasher.

Installation

NOTE

Plumbing connections must comply with national, local plumbing and sanitary codes.

IMPORTANT

Make sure that the flexible water supply and drain hoses are not kinked.

7

Installation

Drain Connections

1. All models have a 6ft. 5/8" I.D. drain hose. The maximum drain height connection

must not exceed 3 ft.[9 m]. The recommended drain height is 17" [.4 m] or less

above the nished oor.

2. The drain hose is located at the rear of the dishwasher. A 5/8" hose-barb tting is

strapped to the drain hose to connect the drain hose.

3. The drain hose is secured to the rear of the machine by a clamp to maintain a

goose-neck bend in the drain hose.

DO NOT REMOVE THE DRAIN HOSE RETAINING CLAMP.

DO NOT STRETCH THE DRAIN HOSE.

4. Install the drain hose to a "WYE" drain tting. Connection to a "TEE" tting will

prevent the dishwasher from draining completely.

5. The maximum drain ow is 15 US gpm/12.5 Imp gpm/57 Lpm

6. Make sure the drain hose does not kink. Kinks will prevent the dishwasher

from draining completely, and the dishwasher will overow out the front door.

NOTE

The dishwasher drains in 8 seconds and drain water exits the hose with considerable force.

ATTENTION

Do not connect the drain hose to a disposer. The dishwasher will not drain correctly.

The dishwasher flexible drain hose

must be connected to a WYE fitting.

Do not connect the dishwasher

flexible drain hose to a TEE fitting.

8

Filling the Booster

Initial Start-up

For Models 501HT, 401HT, and 201HT

A

B

C

Booster Fill Switch

The booster heater is filled using the Booster

Fill Switch. It is located behind the lower front

access panel in the center of the bracket that

holds the chemical dispensing pumps (see the

photos to the right).

Fill the booster heater:

1. Make sure that the dishwasher power

switch is OFF.

2. Remove the lower front access panel.

3. Locate the booster ll switch. It is in the

left-center of the electrical component

panel.

4. Make sure the Booster Fill Switch is in

the middle position, (see A).

5. Turn the water supply and the main

power supply on.

DO NOT TURN THE DISHWASHER

POWER SWITCH ON.

6. Push and hold the switch to the FILL

position (see B) until you hear water

entering the wash compartment,

then release the switch.

7. Push the Booster Fill Switch to the ON

position and release (see C).

Note:

The dishwasher contains a built-in booster heater that was drained prior to shipment

and must be filled with water before operating the dishwasher.

9

Install Scrap Screen

1. Remove any protective lm from dishwasher.

2. Check the interior for foreign material.

3. Make sure that the dishwasher is permanently located.

4. Make sure that all utility connections are complete.

5. Make sure that the exible drain hose and the hot water ll hose are not kinked.

6. Make sure that the chemical supply containers are full and that the chemical pick-up tubes

are installed in the proper containers.

7. Make sure that the scrap screen is in place.

8. Make sure that the spray arms are in place and that they spin freely.

9. Close the dishwasher door.

10. Turn hot water supply on and check for leaks in the main water supply piping connected

to the dishwasher.

Initial Start-up

Check List

All Models

10

1. Models 201HT, 201HTN, 401HT, 401HTN, 501HT, and 501HTN:

are equipped with a built-in detergent dispensing pump and a rinse-aid dispensing pump.

The pumps are located behind the lower front access panel.

2. Each pump is equipped with a line-strainer, stiffener tube and 6 ft. of pick-up tubing.

The pick-up tubes are marked with colored labels that identify the type of chemical used.

RED = Detergent (Non-chlorinated)

BLUE = Rinse-Aid (Consult chemical supplier)

WHITE = Sanitizer (5.25% Sodium hypochlorite (chlorine bleach) solution.

(LT ONLY)

3. Make sure the stiffener tubes are placed in the correct chemical supply container

(chemicals supplied by others).

4. The chemical supplier must adjust the dispensers to deliver the correct amount of

chemicals to the dishwasher.

5. Chemical containers must be placed as close to the dishwasher as possible.

Do not elevate the containers above the nished oor.

Chemical Dispensing Pumps

Initial Start-up

Chemical Dispensing Pumps for

High Temperature HT and HTN

Models.

Chemical Pick-up Tubes,

stiffener tubes & line

strainers.

Chemical Injection Point

Models 501HT, 501HTN, 401HT, 401HTN, 201HT, 201HTN

11

Initial Start-up

Chemical Dispensing Pumps

Chemical Injection Point

501LT and 201LT Chemical Dispensers

ATTENTION

(For LT Models Only), 5.25% sodium hypochlorite (chlorine bleach) must be used as a

sanitizing agent to provide a minimum concentration of 50 ppm in the final rinse.

The 50 ppm concentration must be checked using chlorine test strips to make sure that the

proper concentration is maintained

1. Models 501LT and 201LT are equipped with a built-in

detergent, rinse-aid, and sanitizer dispensing pumps

(See the photograph at right).

2. The pumps are located on a center bracket behind the

lower-front access panel.

3. The pick-up tubes are marked with colored labels that

identify the type of chemical used:

RED = Detergent (Non-chlorinated)

BLUE = Rinse-Aid (Consult chemical supplier)

WHITE = Sanitizer (5.25% Sodium hypochlorite

(chlorine bleach) solution.

The chemicals enter the wash tank compartment through

a tting on the right-side of the wash compartment.

4. The detergent supply should be a non-chlorinated

liquid detergent, the chemical supplier will determine an

appropriate rinse agent. Your chemical supplier should

adjust the dispensers for the supplied product.

5. Place the chemical supply containers

as close to the dishwasher as possible.

6. Do not elevate the chemical containers

above the nished oor.

Models 501LT and 201LT

Chemical Pick-up Tubes,

stiffener tubes & line

strainers.

12

Chemical Dispensers

Initial Start-up

1. Make sure the chemical containers are full and the correct pick-up tubes are in the

containers.

2. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher

will ll with water.

3. The Prime push button primes the Sanitizer pump and the Rinse-aid pump.

The Detergent pump does not have a prime push button. During normal operation,

observe the detergent pick-up tubing to make sure that air bubbles are moving

through the tubing which indicates that the detergent is being dispensed.

4. Open the dishwasher door, then push and hold the prime push button UP to the

SANI position until sanitizer enters the wash tank compartment. Release the PRIME

push button.

5. Push and hold the Prime push button DOWN to the RINSE position until rinse-aid

is observed entering the wash tank compartment. Release the Prime push button.

6. Priming is complete.

1. Make sure the chemical containers are full and the correct pick-up tubes are in the

containers.

2. Turn the dishwasher power switch ON. The switch will illuminate and the

dishwasher will ll with water.

3. Open the dishwasher door, then push and hold the prime push button UP to the

DET position until detergent is observed entering the wash tank compartment.

4. Push and hold the prime push button DOWN to the RINSE position until rinse-aid

enters the wash tank compartment. Release the push button.

5. Priming is complete.

Priming the Chemical Dispensing Pumps

Models 501HT, 501HTN, 401HT, 401HTN, 201HT, 201HTN

Models 501LT, and 201LT

PRIME

DET

R/A

Prime Switch

Model Series 501

I

O

START POWER

PRIME

OFF / DRAIN

ON

DET

R/A

Prime Switch

Model Series 401, 201

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Moyer Diebel 201HT Installation & Operation Manual

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