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 dryer is of the redundant type which means that the gas valve is actually two (2) 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 29).

1)The DSI (Direct Spark Ignition) System consists of a microprocessor-based control module, along with an Ignitor and 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 (Direct Spark Ignition) module at which time the DSI modules' L.E.D. (light emitting diode) indicator will light "RED" indicating that power has been established to the DSI module. Almost immediately (up to approximately 1.5-seconds [prepurge]) 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 (Direct Spark Ignition) module will "LOCK-OUT" and the DSI modules' L.E.D. (light emitting diode) 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 (Direct Spark Ignition) module indicator will light "GREEN," and the burner system will continue through a normal heating cycle, where the DSI (Direct Spark Ignition) 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 (Direct Spark Ignition) 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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ADC AD-310 service manual Repairable
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AD-310 specifications

The ADC AD-310 is a versatile and compact audio digital converter designed to meet the demands of audio professionals and enthusiasts alike. With its advanced technology and user-friendly features, the AD-310 stands out in the crowded marketplace of audio interface solutions.

One of the main features of the ADC AD-310 is its high-resolution audio conversion capabilities. Supporting sample rates up to 192 kHz and resolutions of up to 24 bits, the AD-310 ensures that audio captures are of the highest fidelity, making it ideal for recording, mixing, and mastering tasks. This level of detail is crucial for audio professionals who require precision and clarity in their audio signals.

Another standout characteristic of the ADC AD-310 is its robust connectivity options. It comes equipped with both USB and optical ports, enabling seamless integration with a variety of digital audio workstations (DAWs) and other audio equipment. This flexibility allows users to choose their preferred connection method, enhancing the overall workflow and efficiency during production.

The AD-310 also features advanced analog-to-digital and digital-to-analog converters, which contribute to its impressive dynamic range and low total harmonic distortion (THD). This ensures that the audio output is clean and true to the original signal, making it suitable for both recording and playback applications. Additionally, the unit incorporates real-time monitoring capabilities, allowing users to hear adjustments as they make them, ensuring the perfect mix every time.

For ease of use, the ADC AD-310 is designed with a simple, intuitive interface. Its layout includes clearly labeled controls and LED indicators, allowing users to quickly assess levels and settings at a glance. This design philosophy extends to its compact form factor, making it easy to transport and integrate into any studio setup, whether it be in a professional environment or home studio.

With its combination of high-quality audio processing, flexible connectivity, and user-friendly design, the ADC AD-310 is an excellent choice for anyone looking to elevate their audio production experience. Whether used by professionals or hobbyists, the AD-310 delivers performance and reliability that sets it apart in the audio converter market.
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