Moyer Diebel 351HT-E Installation Manual

Installation/Operation Manual with Service Re

Undercounter High Temperature Dishwasher

Model:

351HT E

placement Parts

3765 Champion Boulevard Winston-Salem, NC 27105 336/661-1992 Fax: 336/661-1660 Toll-free: 800/858-4477

351HT E

Issue Date: 6.9.11

Manual P/N 0513114 rev. B

For machines beginning with S/N W110124156 and above

2674 North Service Road, Jordan Station Ontario, Canada L0R 1S0 905/562-4195 Fax: 905/562-4618 Toll-free: 800/263-5798

Machine Serial No.

Printed in the USA

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

Model Number__________________________ Serial Number_______________________

Voltage________________Hertz_____________ Phase__________________

Service Agent __________________________________ Tel:______________________

Parts Distributor _________________________________ Tel:______________________

National Service Department

In the U.S.A.

Toll-free: 800/ 858-4477 Tel: 336/ 661-1992 Fax: 336/ 661-1660 Email: service@moyerdiebel.com

ATTENTION:

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

and phase are needed to identify your

machine and to answer questions.

The machine data plate is located

on the lower front panel.

Please have this information ready

if you call for service assistance.

National Service Department

In Canada

Toll-free: 800/ 263-5798 Tel: 905/ 562-4195 Fax: 905/ 562-4618 Email: service@moyerdiebellimited.com

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.

Revision Revised Serial Number Revision Date Pages Effectivity Description

1.21.11 All W1101241546 Released First Edition

5.5.11 30-31 W1101241546 Changed solenoid valve to 220V

6.9.11 34-35 W1101241546 Changed door assembly to P/N 0713141

Limited Warranty

LIMITED WARRANTY

Moyer Diebel, 3765 Champion Boulevard, Winston-Salem, North Carolina 27105, 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, INCLUDING, 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.

Table of Contents

Model 351HT E Undercounter Dishwasher

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

Limited Warranty Model Description

................................................................................................................ii

..............................................................................................................iv

Installation ..............................................................................................1

Receiving ....................................................................1

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

Water Connections .....................................................4

Drain Connections ......................................................5

Initial Start-up ..........................................................................................6

Operation ...............................................................................................................7

Normal Wash Mode ....................................................7

Rinse Sentry Mode .....................................................8

Cleaning and Maintenance .......................................................................9

Cleaning ......................................................................9

Maintenance ...............................................................12

Troubleshooting ..........................................................13

Service Replacement Parts .......................................................................15

Electrical Schematic

Timer Chart

.............................................................................................39

............................................................................................. 38

iii

Model Description

351HT E

High temperature hot water sanitizing dishwasher with built-in 40°F/22°C rise booster heater. 208-240VAC/50/60/1

Installation

Counter-top

Wall

3" [8cm] Min.

34"

[86cm]

Min.

Floor

Receiving

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. Move the dishwasher near its permanent location.

CAUTION:

Be careful when lifting the to prevent damage.

NOTE:

The installation must comply with local health codes.

5. Check the utility connections are the same.

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

7. Place the dishwasher in its permanent location.

8. The dishwasher has 4 adjustable feet for leveling.

9. Level the dishwasher front-to-back and

The typical counter-top height 34" [86cm].

side-to-side.

Installation

Main Terminal Block

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.

ATTENTION

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

with all local codes and regulations .

VERIFY THE CORRECT VOLTAGE IS SUPPLIED TO THE MACHINE

THE CORRECT SUPPLY VOLTAGE IS/208-240VAC/50/60/1.

(See the diagram on next page.)

The Main Terminal Block (MTB) is located on the left-rear corner

of the electrical panel.

Installation

Electrical Connections

1. Refer to the connection diagram on the preceding page and the photo below:

2. Machines require a 2-wire plus ground supply which includes a current carrying neutral.

3. Power connections are made at the Main Terminal Block (MTB).

4. The MTB is located on the left-rear corner of the electrical panel behind the front access panel. (See the illustration on the previous page.)

NOTE: Provide a 3 foot service loop in the power cable at the back of the dishwasher for service.

To Connect Main Power to the Dishwasher:

1. Remove the lower front access panel of the dishwasher.

2. Locate the electrical mounting panel on the right-side of the machine. Remove the retaining nut at the top of the panel that holds the panel in place.

3. Lower the panel and pull it forward to gain access the MTB.

4. Feed the power cable through the cable hole located on the right side, as viewed from the front of the machine, into the interior of the machine.

5. Make sure the cable passes through the cable mounting bracket located near the front-center of the base and secure the cable with a cable connector.

6. Connect the ground wire to the base of the dishwasher with the ground screw provided next to the cable mounting bracket.

SINGLE PHASE POWER CONNECTION

208-240VAC 50/60/1

GRD

L1 L2

7. Feed the remaining cable wires to the Main Terminal Block and connect according to the connection diagram to the right.

From Rear of Machine

Cable Bracket

GRD

To Main Terminal Block

208-240

VAC

HOW TO CONNECT POWER

1. Check the data plate on the front of the

dishwasher for the voltage of the machine.

2. Remove the lower-front access panel.

3. Lower the electrical component bracket.

4. Feed the power cable from the rear of the dishwasher to the center of the machine and through the cable bracket.

5. Connect the ground wire to the base of the dishwasher using the ground screw located near the bracket.

6. Feed the power leads to the terminal block.

7. Connect L1, L2 and ground.

8. Main Power connections are complete.

Route the supply cable through the cable bracket.

Installation

Water Connections

NOTE

Plumbing connections must comply with local plumbing and sanitary codes.

IMPORTANT

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

1. All models have a 6 ft. exible hot water ll hose with a 3/4" NPS 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 water supply line as close to the

dishwasher as possible for service.

4. The pressure regulating valve, PRV, must be installed after the shut-off service valve if the

incoming ow pressure exceeds 20-22 psi.

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

the 40°F/ 22°C rise booster.

Drain Connections

ATTENTION

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

1. The dishwasher has a 6ft. 3/4" I.D. drain hose. The maximum drain height

connection must not exceed 3 ft.[0.9 m].

2. 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.

3. Install the drain hose to a "WYE" drain tting. Connection to a "TEE" tting will prevent the dishwasher from draining completely.

Installation

4. The maximum drain ow is 8 U.S. gpm/7 Imp. gpm/30 L.P.M.

5. 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: 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.

Initial Start-up

Check List

1. Remove any protective lm from dishwasher. Check the interior for foreign material.

2. Make sure that the dishwasher is permanently located.

3. Make sure that all utility connections are complete.

4. Make sure that the exible drain hose and the hot water ll hose are not kinked.

5. Make sure that the sump lter is in place.

6. Make sure that the overow tube is installed and rmly seated in the sump.

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

8. Fully close the dishwasher door.

9. Turn hot water supply on and check for leaks in the main water supply piping connected to the dishwasher.

IMPORTANT

During the initial fill, adjust the PRV to ensure that the flowing pressure of the incoming water is set to 20-22 PSI.

Install the scrap screen, overflow tube, and spray arms.

Make sure the spray arms turn freely.

Operation

Normal Wash Mode

Follow the instructions below to operate the dishwasher in a Normal Wash Mode. A Rinse Sentry feature

holds the dishwasher in a wash mode if the booster heater temperature is below 180ºF/82ºC.

1. Turn the main power on at the main circuit breaker.

2. Install the sump lter, overow tube and spray arms.

3. Make sure the exible drain hose and the exible ll hose are not kinked,

then turn the water supply on.

4. Close the dishwasher front door.

5. Push the dishwasher Power Switch to the ON position.The power switch will illuminate and the

machine will ll with water.

6. Wait 15-minutes for dishwasher to reach a minimum of 150ºF/66ºC.

At the beginning of the day, run 2 empty cycles before checking the final rinse

operating temperature. The first cycle will take longer than normal because the

water temperature in the booster is low.

ATTENTION

7. Load soiled wares into the dish rack. Place plates, glasses, cups and bowls in a peg rack. Place utensils in a single layer in a flat-bottom rack. Place pots and pans in a flat-bottom rack. Do not overload the dish racks.

8. Slide 1 dish rack into the wash compartment making sure that wares do not interfere with the rotating spray arms. Do not wash more than 1 dish rack at a time.

9. Close the front door fully, then press and hold the START BUTTON for 1-second. The green in-cycle light will illuminate and the wash cycle will begin. The wash cycle time runs for

approximately 1-1/2 minutes. (continued on next page)

10. Opening the door when the dishwasher is in-cycle will stop the dishwasher. The cycle will resume automatically when the dishwasher door is closed fully.

Operation

Normal Wash Mode

11. The nal rinse cycle begins at the end of the wash cycle and runs for approximately 15-seconds

12. At the end of the rinse cycle, the in-cycle light will go out. Open the door and remove the clean rack of wares. Repeat steps 8-12 for additional dish racks.

13. Refer to the Cleaning Instructions, "After Each Meal Period or every 8 Hours of Operation", on

page 9 for the procedures to drain and clean the dishwasher.

Rinse Sentry Mode

The nal rinse water temperature must be a minimum of 180ºF/82ºC during the final rinse cycle to ensure

that all wares are sanitized. If for any reason, the hot water temperature in the booster tank cannot provide this temperature, the dishwasher will enter a Rinse Sentry Mode of operation and extend the cycle time.

The Rinse Sentry changes the Normal Operation Mode as described below:

1. The Rinse Sentry constantly monitors the water temperature inside nal rinse booster.

2. If the temperature inside the booster heater falls below 180ºF/82ºC then the Rinse Sentry will extend the wash cycle time until the booster heater water temperature reaches the proper temperature.

3. The in-cycle light will remain illuminated during the Rinse Sentry Mode.

(continued)

4. An extraordinarily long wash cycle may indicate a low incoming water temperature or a problem with the booster heater operation.

DO NOT REMOVE WARES UNTIL THE FINAL RINSE CYCLE HAS

SANITIZED THE WARES AND THE GREEN CYCLE LIGHT GOES OUT.

Cleaning and Maintenance

Cleaning

After Each Meal Period or every 8 Hours of Operation.

1. Press the lighted power switch to the OFF position. The power switch light will go out.

2. Open the door and remove the overow tube.

3. Push and hold the drain switch to drain the wash tank, then release the switch.

4. Remove the sump lter carefully to keep the soil or waste particles from falling into the sump.

5. Clean the sump lter by rinsing with clean water.

Be sure to back-ush the lter. Do not strike the lter against solid objects.

6. Check the sump for foreign material and clean as required.

7. Replace sump lter and the overow tube.

8. Make sure that spray arms turn freely.

9. Close the door and turn the ON/OFF switch to ON and return to normal operation mode.

Heating Element

Overflow Tube

Overflow Seal

Sump Filter

Sump

Cleaning and Maintenance

Cleaning

At the End of the Day

1. Remove the upper and lower rinse and wash spray arms. The spray arms are interchangeable.

2. Unscrew the rinse arm pin (A). Remove the rinse arm assemblies

3. Clean the nal rinse arm nozzles using a small paper clip (B).

4. Remove the rinse arm end plugs (C) if necessary, and ush the rinse arm with clean water.

5. Re-install the rinse arm end plugs if they were removed.

6. Remove the wash spray arms and ush with clean water.

7. DO NOT USE STEEL WOOL TO CLEAN THE INTERIOR OF THE MACHINE.

8. Contact the chemical supplier for de-liming if required (see next page).

9. Wipe the interior and exterior of the machine with a soft cloth and a mild detergent. DO NOT HOSE THE EXTERIOR OF THE MACHINE WITH WATER.

10. Reassemble the dishwasher and leave the door open to allow overnight drying.

Paper Clip

End Plug

Wash Spray arm

Rinse Arm Pin

Cleaning and Maintenance

De-liming

Minerals accumulate on the interior surfaces of the dishwasher. The deposits have a white haze and, in cases of heavy accumulation, may appear as a granular solid. The generic name for mineral deposits is lime. The removal of lime deposits is called de-liming. Your dishwasher should be delimed regularly; how often will depend on the mineral content of your water.

Inspect your machine interior for lime deposits. If deliming is required, a de-liming agent should be used for best results in accordance with the chemical supplier's instructions.

Danger: Death or serious injury may result when de-liming solution is mixed with sodium hypochlorite

(chlorine bleach) sanitizing agent. Mixing may cause hazardous gases to form.

De-liming solution and other acids must never be mixed with chlorine, iodine, bromine, or fluorine.

Caution: Skin contact with de-liming solutions can cause severe irritation and possible chemical burns. Always wear protective clothing and googles when handling chemicals.

Attention: Contact your chemical supplier for specific safety procedures and instructions for the use of the de-liming solution supplied for the dishwasher. De-liming solution or other chemicals are not supplied by the dishwasher manufacturer.

Overflow Tube

Heating Element

Overflow Seal

Sump Filter

Sump

Cleaning and Maintenance

Maintenance

Follow the maintenance schedules below to keep the dishwasher operating most efficiently.

Daily Maintenance

1. Check all of the wash arm and rinse arm spray jets and clean as necessary.

2. Make sure that the water supply is on and that the drain is not clogged.

3. Make sure that dish racks are in good condition.

4. Follow the cleaning procedures given above.

Weekly Maintenance

1. Perform Steps 1-4 in the Daily Maintenance.

2. Inspect water lines for leaks.

3. Check for water leaks underneath the dishwasher.

4. Make sure the exible water ll and drain hoses are not kinked.

5. Make sure that the dishwasher is level.

6. Clean accumulated lime deposits from the wash tank heating element.

7. Inspect the scrap screen and replace it if damaged.

8. Check the spray arms and replace or repair if damaged.

Troubleshooting

Follow the troubleshooting guide below in the event that your dishwasher does not operate as expected. Perform the basic checks below before calling an authorized service agent:

1. Make sure that the main water supply is turned on.

2. Make sure that the main power is turned on.

3. Make sure that the exible water ll and drain hoses are not kinked.

Condition Cause Solution

Dishwasher will not run.

Low or no water.

Poor wash results.

Dishwasher stays in wash cycle.

Door not closed. Main power OFF. Dishwasher OFF.

Main water supply off. PRV setting incorrect Solenoid strainer clogged. Solenoid valve defective.

Detergent not added to tank

Wares incorrectly loaded. in dishrack.

Clogged sump filter. Clogged spray arms.

Thermostat defective.

Detergent motor defective.

Water temperature low.

Rinse Sentry extends wash mode to allow final rinse water booster temperature to reach 180˚F/82˚C.

Close door completely. Check breaker on panel. Turn dishwasher ON.

Open supply valve. Adjust the PRV setting Clean strainer. Contact Service Agent.

Add detergent.

Reposition wares or reduce amount of wares.

Clean sump filter. Clean spray arms.

Contact Service Agent.

Contact Service Agent

Contact Service Agent because booster thermostat is defective.

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Intentionally

Left Blank

Service Replacement Parts

Illustrations Page

Wash Pump/Motor Assembly ................................................................................................................................. 16

Booster Assembly ................................................................................................................................................... 18

Electrical Panel and Timer Assembly ..................................................................................................................... 20

Control Panel Assembly ......................................................................................................................................... 22

Wash and Rinse Spray Arm Assemblies ................................................................................................................ 24

Lower Hose Assembly and Drain Pump ................................................................................................................. 26

Wash Tank Heater and Drain Assemblies .............................................................................................................. 28

Fill Solenoid Valve Assembly .................................................................................................................................. 30

Panel Assembly ...................................................................................................................................................... 32

Door Assembly ....................................................................................................................................................... 34

Chemical Pumps, Line Strainer, Pressure Regulating Vavle (PRV) and Dish racks .............................................. 36

Electrical Schematic ............................................................................................................................................... 38

Timer Chart ............................................................................................................................................................. 39

Wash Pump/Motor Assembly

Item Part Description Qty. No. No.

1 0512340 SCREW, M4, PHIL, PAN HD. 9

2 0512341 IMPELLER HOUSING COVER 1

3 114144 NUT, M6 (left-hand thread) 1

4 0501501 WASHER, LOCK, 1/4" 1

5 0501478 WASHER, PLAIN, 17/64" 1

6 0512345 IMPELLER 1

7 114139 SEAL 1

8 110285 GASKET, PUMP

9 114137 BACKPLATE, PUMP 1

10 107337 NUT, M4 9

11 0512101-1 PUMP/MOTOR ASSEMBLY COMPLETE 1 220VAC 50/60/1

12 H29043 CAPACITOR 16μF 1

Booster Assembly

Item Part Description Qty. No. No.

1 0512847 HEATER, BOOSTER 4kW, 208V, 40°F RISE 1

(Does not include gasket)

2 0512928 GASKET, BOOSTER HEATER 1

3 0512108 THERMOSTAT, CONTROL 195°F 1

4 0512185 BOLT, HEX FLANGE, 1/4-20 X 3/8" SST 1

5 0508817 PLUG, 1/8" SST 1

6 0512926 HOSE, BOOSTER FILL 1

7 110562 THERMOSTAT, HI-LIMIT FIXED SNAP 240°F 1

8 0712835 TANK, BOOSTER WELDMENT 1

9 0503679 CLAMP, GEAR-TYPE, 7/16" SST 5

10 107417 HOSE, 1/2" ID A/R

11 0512968 TEE 1

12 108954 NUT, GRIP 6-32 W/NYLON INSERT 2

13 0512920 FITTING, BOOSTER THERMOSTAT 1

Electrical Panel and Timer Assembly

Item Part Description Qty. No. No.

1 0312909 PANEL, CONTROL 1

2 0507323 THERMOSTAT, WASH TANK 1

3 0512108 THERMOSTAT, BOOSTER 195°F 1

4 C120444 CONTACTOR, 25/40A, 3P, 220V COIL 1

5 0504951 BLOCK, TERMINAL 1

6 0503745 SCREW, RH 8-32 X 3/16" SLOTTED SST 4

7 0512969 TIMER 1

8 CM0082006 STAND-OFF, CIRCUIT BD. NYLON 4

10 0503620 SCREW, RH, 4-40 X 3/16" SLOTTED SST 4

12 0512934 LABEL, WASH-RINSE TEMPERATURE 1

13 CM0082007 CAP, STAND-OFF, NYLON 4

0509428-1

0501450

RELAY, 15 AMP 1

SCREW, NIBS RH 6-32 X 3/16" PHIL. SST 4

Control Panel Assembly

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