American Dryer Corp ML-75DIII Fire Suppression System F.S.S. Theory of Operation

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3.Electrical Requirements

No independent external power source or supply connection is necessary. The 24 volt power to operate the fire suppression system (F.S.S.) is accomplished internally in the dryer (from the dryer controls).

WARNING: ELECTRICAL POWER MUST BE PROVIDED TO THE DRYER AT ALL TIMES. If the main electrical power supply to the dryer is disconnected, the F.S.S. is

INOPERATIVE!!

Fire Suppression System (F.S.S.) Theory of Operation

20-seconds after the heat turns off, the Phase 7 control monitors the F.S.S. probe located in the top of the basket (tumbler) chamber and records the minimum temperature. If the minimum recorded temperature is no less than 120° F (48° C) and the control detects a 35° rise in temperature, this will be the trip point and the F.S.S. routine will activate.

While a drying cycle is in process and the heat is on, the Phase 7 control monitors the exhaust temperature transducer. If the drying cycle temperature set point is set greater than 160° F (71° C) and the control detects an exhaust temperature rise 25° F (-3.8° C) greater than set point, this will be the trip point and the F.S.S. routine will activate.

Once the F.S.S. routine is activated, water will be injected into the basket (tumbler) chamber. Anytime water is being injected into the basket (tumbler); the basket (tumbler) drive will turn the load for 1-second every 15-seconds. This process will continue for a minimum of 3 minutes. After 3 minutes has elapsed, the control will check if the temperature remained above trip point, if so water will remain on. The control will continue to check if temperature is above trip point every 30-seconds. If the water has been on for a constant 10 minutes, the water will be turned off regardless of the temperature. If the temperature has dropped below trip point, the control will turn off the water prior to 10 minutes.

SYSTEM RESET

After the microprocessor determines that the situation is under control and shuts the water being injected into the basket (tumbler) off, the microprocessor display will read “FIRE SUPPRESSION SYSTEM ACTIVATED,” and the horn/tone will sound until reset manually.

To reset the microprocessor and F.S.S. system, press the red key on the keyboard (touch pad).

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Contents ML-75DIII Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Receiving and Handling Important InformationWhat to do if YOU Smell GAS Safety PrecautionsStandards Specifications SPECIFICATIONS/COMPONENT IdentificationSpecifications Component Identification Dryer Rear View Illus. No Location Requirements Installation ProceduresUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply General Exhaust Ductwork Information Exhaust RequirementsPage Page Page Page Electrical Requirements Electrical InformationMLS-75 Steam MLE-75 Electric Grounding Single-Phase 1Ø Electrical Connections Leads Page Phase 3ø Wiring Connections/Hookup Reversing Models Only Electrically Heated Models Only GAS Information Type of GAS Page Steam Information Operating Steam Pressure Steam Damper Air System Connections Compressed AIR Supply AIR Pressure Page Preparation for OPERATION/START-UP Preoperational Tests Basket Coating Preoperational Instructions Shut Down Instructions Service SERVICE/PARTS InformationParts Returning Warranty Cards Warranty InformationWarranty Returning Warranty PartsPage Cleaning Routine MaintenanceDays AdjustmentsLubrication Procedure for Functional Check Replacement Components Page Sectionviii Reversing Timer SPIN/DWELLADJUSTMENTSData Label Data Label InformationSerial Number P O R T a N T For Phase 7 ModelsFor Dual Timer Models Fire Suppression System F.S.S S. In ActionBefore YOU Start Check Local Codes and Permits InstallationWater Connections Optional Manual Bypass Fire Suppression System F.S.S. Theory of Operation Parts Break Down Comp x 3/8 M.P.T. Brass Connector 822752 ADC113343 1 09/26/01-25

ML-75DIII specifications

The American Dryer Corp ML-75DIII is a high-performance dryer designed to meet the demanding needs of commercial laundry facilities. Known for its robust construction and innovative features, this dryer sets a new standard for efficiency and reliability in laundry applications.The ML-75DIII boasts an impressive drying capacity, making it an ideal choice for laundromats, hotels, and other establishments with high laundry volumes. Its 75-pound capacity allows for large loads, reducing the time and energy required to dry multiple smaller batches. This efficiency not only saves time but also optimizes operational workflow, enabling staff to focus on other critical tasks.

One of the standout features of the ML-75DIII is its advanced control system. Equipped with an intuitive microprocessor control, it allows users to select from multiple drying cycles, temperatures, and times, ensuring that every batch is processed to perfection. The control panel is user-friendly, making it easy for operators to make adjustments and monitor the drying process in real-time.

Moreover, the ML-75DIII incorporates intelligent moisture sensing technology that detects the moisture level of the laundry and adjusts the drying time accordingly. This feature prevents over-drying, preserving the quality of fabrics while reducing energy consumption. The dryer’s high-efficiency heating elements further contribute to its performance, delivering powerful heat while minimizing energy use.

Safety is also a top priority in the design of the ML-75DIII. The dryer is equipped with a host of safety features, including a door safety switch that prevents operation when the door is open. Additionally, the machine includes a robust lint filtration system that ensures lint is effectively captured, reducing fire hazards and promoting a clean working environment.

Durability is another hallmark of the ML-75DIII. Its heavy-duty construction using high-quality materials ensures that the dryer can withstand the rigors of daily use in a commercial setting. The stainless steel drum is resistant to corrosion and wear, providing a long-lasting solution for any laundry operation.

In conclusion, the American Dryer Corp ML-75DIII combines advanced technology with practical features to deliver a top-tier drying experience. Its high capacity, intelligent controls, energy efficiency, and safety measures make it a preferred choice for commercial laundry facilities looking to enhance productivity and reliability.
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