e.The Tumbler Hi-Limit Switch is a thermostat type switch located above the Lint Basket. Its function is to discontinue heat (flame) in the event of an over temperature situation (above 225º F).

MAN3484

225º F Thermostat

f. The gas valve used in the ADG-200 is of the redundant type which means that the gas valve is actually two gas valves in one; one in series with the other. This is a safety feature which provides protection against gas flow in the event that one of the valves does not seat properly. The valve also regulates the incoming gas pressure.

NOTE: THE DSI GAS VALVES ARE NOT FIELD

REPAIRABLE.

Redundant Gas Valve

g. Normal Operation of the Direct Spark Ignition (DSI) System (refer to the illustration on page 14)

1)The DSI System consists of a microprocessor-based control module, along with an Ignitor/Flame- Probe Assembly. This control utilizes a high voltage synchronous spark ignitor and a rectified flame sensor probe signal to locally control ALL basic functions in the gas burner.

On a call for heat by the dryers' controls, 24 VAC is applied to the DSI module at which time the modules' L.E.D. (light emitting diode) indicator will light "RED" indicating that power has been established to the module. Almost immediately (up to approximately 1.5 seconds [pre-purge]) the indicator will light "GREEN," the gas valve opens and the spark burst will be evident (on) for approximately 8-seconds. The burner flame should now be established/confirmed.

If at this time the flame has not been established and confirmed, the DSI module will "LOCK-OUT" and the modules' L.E.D. indicator will light "RED" and stay on continuously. To reset or cancel the "LOCK- OUT" condition, open and close the main door then restart the dryer.

Once the burner flame is established and confirmed, the DSI module indicator will light "GREEN," and the burner system will continue through a normal heating cycle, where the DSI system will cycle on and off as required by the dryers controls.

During the normal heating cycle, should a "FLAME-OUT" occur (i.e., severe air turbulence forces the flame away from the ignitor and flame-probe assembly), the DSI module shut the gas valve off and immediately try to reestablish the burner flame. The DSI module will attempt to light the burner ONLY ONCE. If flame is not established, the DSI module will "LOCK-OUT." To reset or cancel the "LOCK- OUT" condition, open and close the main door then restart the dryer.

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American Dryer Corp AD-200 service manual Repairable
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AD-200 specifications

The American Dryer Corp AD-200 is a renowned commercial dryer that stands out in the market for its efficiency, performance, and durability. Designed for high-demand environments such as laundromats, hotels, and gym facilities, the AD-200 delivers robust performance while maintaining user-friendly operation.

One of the standout features of the AD-200 is its capacity. With a generous drum size, this dryer can handle large loads, making it ideal for businesses with heavy laundry demands. This not only maximizes productivity but also allows users to process more laundry in less time, which is crucial in high-turnover environments.

The AD-200 employs advanced drying technologies that promote faster drying times while minimizing energy consumption. Its innovative airflow design ensures even heat distribution throughout the drum, allowing laundry to dry uniformly without hot or cold spots. This feature enhances drying efficiency and helps in preserving the quality of fabrics, reducing wear and tear over time.

Energy efficiency is a key characteristic of the AD-200. It is equipped with an EcoDry system that optimizes the drying process, significantly reducing operating costs. This technology monitors moisture levels in the drum and adjusts drying times accordingly. By preventing excess energy use, the EcoDry system not only helps in saving on utility bills but also aligns with environmentally responsible practices.

The AD-200 is built for reliability and longevity. Constructed with high-quality materials, it features a heavy-duty stainless steel drum that resists scratches, dents, and corrosion. Additionally, the unit’s design incorporates easy access for maintenance and service, which can drastically reduce downtime and operational disruptions.

In terms of user-friendliness, the AD-200 comes with a simple control interface that allows operators to select drying cycles with minimal effort. The intuitive controls and clear display make it accessible for all staff members. The dryer also includes adjustable drying times and temperatures, giving users flexibility to cater to different fabric care requirements.

Overall, the American Dryer Corp AD-200 is a steadfast solution for commercial laundry applications. Its combination of capacity, efficiency, and durability makes it a preferred choice among business owners looking to enhance their laundry operations while keeping costs manageable. With cutting-edge technology and user-centric design, the AD-200 stands as a reliable asset in the realm of commercial drying solutions.
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