Moyer Diebel Dishwasher Manuals and Troubleshooting for Efficient Maintenance
Page 31

 

 

Troubleshooting

 

 

 

 

Condition

Cause

Solution

 

Dishwasher will not run.

Door not closed.

Close door completely.

 

 

Main power OFF.

Check breaker on panel.

 

 

Dishwasher OFF.

Turn dishwasher ON.

 

Low or no water.

Main water supply off.

Open supply valve.

 

 

Solenoid valve defective.

Install repair kit or replace.

 

 

Solenoid strainer clogged.

Clean strainer.

 

 

Flow washer defective.

Replace flow washer.

 

 

Timer board defective.

Test/replace timer board.

 

 

 

 

 

Chemicals won’t feed into

Chemical supply low.

Refill chemical container.

 

dishwasher.

Supply tubing damaged.

Replace tubing.

 

 

Supply tubing kinked.

Straighten tubing.

 

 

Pick-up tube clogged

Clean/replace tube.

 

 

Timer board defective.

Test/replace timer board.

 

 

 

 

 

Low water pressure

Clogged scrap screen.

Clean scrap screen.

 

pumped from spray arms.

Clogged spray arms.

Clean spray arms.

 

 

Clogged pump intake

Clean sump and pump

 

 

screen.

intake screen.

 

 

 

 

 

Poor wash results.

Water temperature low.

Raise incoming water

 

 

 

temperature.

 

 

Thermostat defective.

Adjust/replace thermostat.

 

 

(See chemicals won’t feed

(See chemicals won’t feed

 

 

above.)

above.)

 

 

(See low or no water

(See low or no water

 

 

above.)

above.)

 

 

Detergent injector defective.

Replace squeeze tube.

 

 

 

Replace injector motor.

 

 

 

Clean tubing and pick-up.

 

 

Wares incorrectly loaded.

Reposition wares or reduce

 

 

in dishrack.

amount of wares.

 

 

 

 

 

Water has drained out of

Goose-neck loop in drain

Re-route drain hose.

 

the wash tank while the

hose has been removed.

DO NOT STRETCH HOSE

 

dishwasher was idle.

Drain hose clamp is not

Replace/Adjust hose clamp

 

 

holding the drain hose

making sure goose-neck

 

 

in proper position.

is maintained.

 

 

Building plumbing does not

Contact Service Agent

 

 

provide correct air vent

and/or plumber.

 

 

to prevent siphoning.

 

 

 

 

 

 

(HT models only)

Rinse Sentry extends

Raise incoming water

 

dishwasher stays in

wash mode for a maximum

temperature.

 

wash cycle.

time of 5-minutes to allow

Adjust/replace final rinse

 

final rinse water booster

 

 

booster thermostat.

 

 

temperature to reach

 

 

 

 

 

180˚F/82˚C.

 

 

 

(501HT only) dishwasher is

Turn Extended Wash Mode

 

 

in Extended Wash Mode.

off.

 

 

 

 

 

21

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Contents Undercounter Dishwashers Page Register Your Product Online Product Registration Card Revision History Revision History Blank This Intentionally Left BlankLimited Warranty Limited WarrantyTable of Contents 201-HT, 401-HT, and 501-HT Models Model DescriptionReceiving InstallationL1 L2 L3 N Electrical ConnectionsFor machines built prior to S/N Electrical Connections Booster Heater/Wash Tank Heater Interlock Circuit Water Connections Drain Connections Initial Start-up Filling the BoosterFor Models 501HT, 401HT, and 201HT All Models Check ListModels 501HT, 501HTN, 401HT, 401HTN, 201HT, 201HTN Chemical Dispensing PumpsModels 501LT and 201LT Chlorine bleach solutionModels 501LT, and 201LT Chemical DispensersChemical Dispensing Pump Speed and Tank Fill Adjustments 501HT Control Panel Normal Wash CycleModel Rinse Sentry FeatureDishwasher Drain Operation Daily-End of the Day CleaningDaily-End of the Day After Meal Period or Every 8 Hours Maintenance Schedule Condition Cause Solution This Intentionally Left Blank Service Replacement Parts Service Replacement PartsWash Pump/Motor Assy All Models Part Description Qty All Models Wash Pump/Motor AssyWash Tank, Drain, Scrap Screens All Models HEATER, 120VAC 750W All Models Wash Tank, Drain, Scrap ScreensBuilt-in Electric Booster 201HT, 401HT, 501HT Must be ordered with P/N 0512108 Thermostat Prior to S/N W14478201HT, 401HT, 501HT Base Electrical Components All Models201LT, 501LT All S/Ns All Models Base Electrical ComponentsBeginning with S/N W14236 and above Prior to S/N W14236Fill Piping All Models VALVE, Fill 5.0 GPM Breakdown on next All Models Fill PipingFill Valve Assy All Models All Models Fill Valve Assy Fill Chute Assy All Models All Models Fill Chute Assy Sprayarm Assy. All Models Drain Manifold Assy Complete All Models Sprayarm AssyMain Terminal Block, Timer Board All Models Part Description All Models Main Terminal Block, Timer BoardRinse-aid/Sanitizer Chemical Dispensing Pump All Models All Models Rinse-aid/Sanitizer Chemical Dispensing Pump Detergent Chemical Dispensing Pump All Models All Models Detergent Chemical Dispensing Pump Control Panel 201HT/HTN, 201LT, 401HT/HTN, 501LT Wash Rinse201HT/HTN, 201LT, 401HT/HTN, 501LT Control Panel Control Panel with Digital Display 501HT, 501HTN 501HT, 501HTN Control Panel with Digital Display Door Assembly All Models All Models Door Assembly Panel Assembly All Models All Models Panel Assembly Dish Racks Electrical Schematics Electrical SchematicsLow Temp. 201LT, 501LT All S/N’s High Temp.- All S/N’s 201HTN, 401HTN, 501HTN High Temp. 201HT, 401HT Prior to S/N Beginning with S/N 14236 201HT, 401HT High Temp High Temp. 501HT Prior to S/N Single PhaseBeginning with S/N 14236 501HT High Temp Timer Chart All Models Basic Service Basic ServiceDigiital Temperature Display Board 501HT Digital Temperature Display Board0512106 Digital temperature Display coDes Timer Connection Diagram All Models Troubleshooting Guide Timer Board Diagnostic Testing Diagnostic testing for p/n 0712105 solid state timer board

201HTN, 401HT, 201HT, 501LT, 201LT specifications

Moyer Diebel is renowned for its exceptional line of commercial dishwashing machines, and the Moyer Diebel 501HTN, 501HT, 401HTN, 201LT, and 501LT models are among the industry's finest. These machines are designed to enhance efficiency, usability, and sustainability in the fast-paced environments of restaurants, cafeterias, and catering businesses.

The Moyer Diebel 501HTN model boasts high-temperature sanitization capabilities, making it ideal for establishments requiring rigorous hygiene standards. This unit features a compact design yet offers robust performance, incorporating an advanced wash system that ensures thorough cleaning of dishware, utensils, and glassware. The 501HTN is equipped with a powerful pump and a low-water consumption feature, promoting efficient operation while maintaining excellent cleaning results.

Similar to the 501HTN, the Moyer Diebel 501HT offers high-temperature washing but is optimized for slightly different applications. This model caters to establishments with a varied volume of dishware, providing flexibility and adaptability without compromising cleaning power. Its user-friendly interface simplifies operation while a dashboard display allows for easy monitoring of wash cycles and temperatures.

The Moyer Diebel 401HTN is designed for establishments that require a balance of performance and compact size. Although slightly smaller, the 401HTN does not sacrifice cleaning effectiveness. Its energy-efficient design is complemented by a powerful heating element that enables rapid temperature recovery, ensuring that wash cycles remain efficient even during peak hours.

In contrast, the Moyer Diebel 201LT is a low-temperature machine, making it suitable for users who prefer to operate using chemical sanitization. This model features an intuitive design, providing easy access for loading and unloading dishware. The 201LT’s energy-saving mode reduces water and energy consumption while maintaining an effective sanitizing process.

Lastly, the Moyer Diebel 501LT model continues the trend of efficiency and effectiveness but stands out for its durable construction and ease of maintenance. With its low-temperature technology, it caters to establishments focused on efficiency without the need for high-temperature water, making it a cost-effective option in terms of energy use and water consumption.

All these models are underpinned by Moyer Diebel's commitment to quality and innovation, ensuring long-lasting performance and reliability. With user-friendly designs and advanced technologies, these machines collectively enhance kitchen operations, ultimately contributing to a cleaner, more efficient, and sustainable dining experience.
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