American Dryer Corp AD-25, AD-30 service manual Display reads Exhaust High Limit Fault. Refer to

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A.The display reads “Exhaust High Limit Fault”. (Refer to page 51)

The temperature in the tumbler is above 220º F (104º C) or follow Steps #1 through #4.

1.Check for voltage (24 VAC) at the computer on the J5 connector from pin 1 to ground. If no voltage is present, either you have a poor connection at the J5 connector or the computer board is faulty. If voltage (24 VAC) is present, proceed to Step #2.

2.Check for voltage (24 VAC) at the J12 connector pin 3 to ground. If no voltage is present, there may be a poor connection at the J12 connector or a break in the wire going back to the J5 connector. If 24 VAC is present, proceed to Step #3.

3.Check for voltage on the J12 connector pin 4. If no voltage is present (24 VAC), check tumbler thermostat reset. If popped, push in to reset. If thermostat does not reset, then replace with new thermostat. If thermostat has not tripped, then check for poor connection in wire. If voltage is present, proceed to Step #4.

4.Check for voltage at the J5 connector pin 2 to ground. If no voltage is present, check for a loose wire between the J5 connector and the J12 connector.

B.The display reads “Burner High Limit Fault”. (Refer to page 52)

1.Indicates the tumbler hi-limit has tripped.

2.Check for a block or restriction in the exhaust.

3.Make sure the exhaust is properly sized.

4.Make sure location has adequate make-up air.

5.Check for voltage (24 VAC) at the computer board J4 connector pin 3 red wire 31 to ground. If no voltage (24 VAC), check for a loose connection or change the computer board. If voltage is present, proceed to Step #6.

6.Check for voltage at the J11 connector pin 2 to ground. connection in the wire, or check the oven hi-limit reset.

If no voltage (24 VAC), check for a loose If it has tripped, push in to reset.

C.The display reads “Bad Exhaust Temp Probe”. (Refer to page 55)

1.Check for a loose connection at the computer J3 connector to temperature sensor probe. If connections are fine, next change the temperature sensor probe. If the display still reads “Bad Exhaust Temp Probe,” change the computer board.

D.The display reads “Sail Switch Open Fault”. (Refer to page 52)

1.The sail switch has opened while dryer is in the heating mode.

2.Check for block or restriction in the exhaust.

3.Make sure exhaust is sized properly.

4.Clean the lint screen.

450268-1

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Contents AD-25, 30, 50, 75 Phase 7.2 Non-Coin Retain This Manual in a Safe Place for Future Reference Table of Contents Explosion could Result Safety PrecautionsCleaning Routine MaintenanceLubrication AdjustmentsENCLOSURE, AIR SUPPLY, and Exhaust Requirements Installation RequirementsElectrical and GAS Requirements Operational Service Check Procedure Control BOX Computer Controls Main Door SwitchControl Panel Microprocessor Tumbler Lint Drawer SwitchLint Drawer Drive Motor and Blower Motor Tumbler Bearing and Pulley ArrangementIdler Bearing Steam Damper System Temperature Sensor Computer ControlsGAS Burner Electric Oven Sail Switch Electric and GAS ModelsCompressed AIR Requirements Reversing Relay Panel Motor Contactor 1Ø MOT orNON-REVERSING Contactor 3Ø MOT or HI-LIMIT Thermostat GAS and Electric Models only Controls Computer To Replace Control Panel AssemblyTo Replace Keypad Refer to illustration above To Replace ComputerTo Replace Motor Contactor 3-POLE, 24 VAC To Replace Computer Temperature Sensor ProbeTo Replace Spark Ignitor Burner Controls GASTo Replace Main Burner Orifices To Test and Adjust GAS Water Column W.C. PressureTo Replace GAS Valve American Dryer Corp 450268-1 Are Made of BRASS, Which is Easily Damaged To Convert from Natural to Liquid Propane L.P. GASTo Replace Direct Spark Ignition DSI Module To Replace Burner TubesSteam Controls InstallationTo Replace Piston To Replace Steam Coil Damper SystemTo Replace Steam Coil To Replace the Needle ValveTo Replace the 3-WAY Microvalve To Replace Oven Contactor Electrical Oven ControlsTo Replace Electrical Elements To Replace HI-LIMIT Thermostat 330º GAS, 290º Electric Thermostats and Temperature SensorTo Replace Sail Switch Sail Switch Assembly GAS and Electric ModelsFront Panel and Main Door Assemblies To Adjust Sail SwitchTo Replace Main Door Switch To Replace Front Panel To Replace Main Door AssemblyTo Install NEW Main Door Glass To Replace the Nylon Catch To Replace Main Door HingeTo Replace Tumbler Pulley Reversing Tumbler and Bearing AssemblyTo Replace Tumbler Pulley NON-REVERSING To Replace the Front Tumbler Bearing To Replace the Rear Tumbler BearingTo Replace Idler Bearing Idler and Bearing AssemblyTo Replace Idler Pulley Tumbler Alignment Vertical Drive PulleyTumbler Alignment Lateral To Replace the Tumbler AND/OR Tumbler Support Belt Tension Alignment Motor to Idler Belt Tension Adjustment Tumbler to IdlerBelts To Replace Motor NON-REVERSING MotorImpellor To Replace V-BELTSTo Replace Lint Screen Lint Drawer ScreenTroubleshooting Diagnostic L.E.D. Display Fault Messages Phase 7 NON-COIN System DiagnosticsINPUT/OUTPUT Board Light Emitting Diode L.E.D. Indicators American Dryer Corp 450268-1 Display reads Exhaust High Limit Fault. Refer to Display reads Sail Switch Closed Fault. Refer to 450268-1 Display reads Cycle Paused, Main Door Open. Refer to 450268-1 American Dryer Corp 450268-1 450268-1 American Dryer Corp 450268-1 450268-1 American Dryer Corp 450268-1 450268-1 Data Label Data Label InformationHOW to USE a Manometer Using a ManometerKeypad Layout NON-COIN S.A.F.E. System Check Procedure System ResetILLUS. #1 Static PressureILLUS. #3 Using a MagnehelicILLUS. #2 American Dryer Corp 450268-1 450268-1 ADC Part No 1 10/26/05

AD-25, AD-30 specifications

American Dryer Corporation (ADC) has long been a trusted name in the commercial laundry equipment industry. Among their notable offerings are the AD-30 and AD-25 dryers, which are engineered to provide exceptional performance, reliability, and efficiency.

The AD-30 dryer is designed for high-capacity laundry operations, making it an ideal choice for large businesses such as hotels, hospitals, and laundromats. With a maximum drying capacity of 30 pounds, the AD-30 features a robust construction that can withstand the demands of heavy usage. Its powerful airflow technology ensures quick drying times, improving productivity and minimizing energy consumption. The dryer is equipped with a microprocessor control that offers multiple cycle options and customizable settings, allowing operators to tailor each drying cycle based on the specific fabric types being processed.

On the other hand, the AD-25 serves smaller operations with a capacity of 25 pounds, making it an efficient choice for businesses with moderate laundry needs. Similar to the AD-30, it incorporates advanced airflow technology to enhance drying efficiency. The AD-25 also features easy-to-use controls and programmable settings, providing flexibility for various drying requirements. Both models come with an easy-to-clean lint filter that helps maintain optimal air quality and prolongs the life of the machine.

In terms of construction, both dryers are built with durability in mind. Their stainless steel exteriors are not only aesthetically pleasing but also resistant to corrosion, ensuring they remain in good condition over time. The design of these dryers incorporates vibration reduction systems to minimize noise during operation, contributing to a more pleasant working environment.

Energy efficiency is a hallmark of American Dryer Corp products, and both the AD-30 and AD-25 are no exception. They are designed to consume minimal energy while delivering maximum drying performance, which can lead to significant cost savings over time. Additionally, the dryers are engineered with safety features, including over-temperature protection and a non-reversible door to prevent accidents.

In summary, American Dryer Corp's AD-30 and AD-25 dryers exemplify the brands' commitment to providing quality, efficiency, and reliability in commercial laundry operations. With their advanced technologies and user-friendly features, these dryers are well-equipped to meet the diverse needs of the laundry industry.
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