American Dryer Corp AD-200 service manual Blower Motor Circiut, Theory of the Blower Motor Circuit

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4. Blower Motor Circiut

IMPORTANT: The L.E.D. indicator on the computer board that reads "DOOR" must be on in order to successfully troubleshoot the following.

Theory of the Blower Motor Circuit:

The Blower (squirrel cage fan) Motor converts the 3-phase (3ø) power source entering the Blower Motor thermal magnetic overload. The overload current is adjustable by a dial located on the face of the overload. (Refer to the electric specification diagram for correct setting.) The voltage is then supplied to the top half (L1,L2, and L3) of the blower (squirrel cage fan) contactor. Providing the 24 A/C volts for the "DOOR" input to the computer is present on pin #5 of the 15 pin computer harness the computer is going to output that 24 volts on pin #5 upon the start of a cycle which will in turn travel through a couple of connectors and land on the A1 marking of the blower and fan contactor. This will shut closed sending the three phase voltage to the overload. Providing the overload is not tripped, the voltage will then travel to the blower and fan motor.

Path of Voltage for the Blower/Fan Motor Circuit:

Three phase voltage is applied to the power distribution block each line L1, L2, and L3 . The voltage then travels to the Blower (squirrel cage fan) thermal magnetic overload. The voltage is then supplied to the blower and squirrel cage contactor marked L1, L2 and L3. As long as the fuses overload is not tripped 208-600 volts will always be there at the contactor. When the computer calls for the fan to come on, 24 A/C volts will output of pin #5 of the computer. This 24 A/C volts will pass through J1 and J3 connectors pin #5 on both, and travel to the coil of the blower (squirrel cage fan) contactor, the contactor will be marked A1. The other side of the coil A2 will be directly grounded. When the 24 A/C volts reaches the coil, the contactor closes and the incoming voltage that is supplied to the top of the contactor L1, L2, and L3 meets the T1, T2, and T3 of the contactor which then must go through the overload. If this overload is tripped (i.e. "DOOR") the voltage will stop here and not proceed to the blower (squirrel cage fan) motor. If the overload is not tripped the voltage will then proceed down to the blower (squirrel cage fan) motor.

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Contents Thru Retain This Manual In a Safe Place For Future Reference Page For Your Safety Table of Contents Section Cause Improper and Dangerous Operation Routine Maintenance Monthly Lubrication Adjustments Gas Enclosure, Air Supply and Exhaust Requirements Installation RequirementsElectrical and Gas Requirements Operational Service Check ProcedureHeat Section Component Description24 VAC Direct Spark Ignition DSI Module Repairable ODPH/RVW Troubleshooting The Direct Spark Ignition DSI System Direct Spark Ignition DSI Troubleshooting Terms definitions Page Three Visual Checks +9LUH Troubleshooting Flow Chart Quick ReferencePdqg Uhqwruli Retries Troubleshooting/System Detailed DiagnosisDSI Ignitor and Flame-Probe Assembly Adjustments Ignitor and Flame-Probe AssemblyPage Air Turbulence Serial numbers for the dryers Are Made of Brass and can be Easily Damaged Discontinue electrical power to the dryerPage General Overview Steam Coil System OperationPage Page Page Page Sprinkler Solenoid Valve Sprinkler System DescriptionSprinkler System Operation Require any adjustmentPage Page Supplies Before Servicing the Dryer HP Control Relay ReplacementMAN3169 Air Jet Assembly Page Leave enough movement for V-belt adjustment Page Important do not Overtighten V-BELTS Important do not Overtighten V-BELTS Page Page Adjustment knob simply acts upon a spring rest located Filter/Regulator AssemblyOperation Door SystemsDiscontinue electric service to the dryer Pneumatic Automatic Door Replacement or Removal Cable Cylinder Replacement or Removal Right Load Door Glass Window Replacement Proximity Switch ReplacementPage Control Electrical System Page Page Emergency Stop button pushed SectionDrive motor is not operating does not start Blown drive motor and blower fan and impellor motor fuses Failed motors both blower fan/impellor motor and drive motor Failed microprocessor controller computer Dryer operates but is taking too long to dry Excessive noise and vibration Electrical Troubleshooting Path of the Door Circuit Door Circuit Theory of the Door CircuitTheory of the Drive Circuit Drive Motor CircuitPath of Voltage for the Drive Circuit J3 but now pin #8 on bothTheory of the Drive Circuit Theory of the Blower Motor Circuit Blower Motor CirciutPath of Voltage for the Blower/Fan Motor Circuit Theory of the Blower Motor Circuit Theory of the Heat Circuit Gas Heat Circuit Gas ModelsPath of Voltage for the Heat Circuit Theory of the Heat Circuit Steam Heat Circuit Steam ModelsPath of Voltage for the Heat Circuit Steam Path of Voltage for the Cycle Done Circuit Cycle Done Circuit Theory of the Cycle Done CircuitDoor indicates door switch circuit is open Phase 5 OPL System DiagnosticsHeat Output LED Indicator LED Display IndicatorsPage Door LED Indicator ADC450310 1- 07/28/99-25
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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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