ADC ML-96, ML-122 Phase 7 OPL System Diagnostics, Diagnostic L.E.D. Display Fault Messages

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If the dryer is active (running) and the lint door is opened the “LINT” L.E.D. indicator will go out and the display will read “LINT dOOR.” The dryer will stop until the lint drawer has been closed, at which time the L.E.D. display will read “PRESS START.” At this time, to resume the drying cycle press “ENTER/START” key.

“MAIN” (MAIN DOOR) Input L.E.D. Indicator

Should be on all the time (unless the lint door is open or the main door is opened then the “MAIN” L.E.D. indicator will go out).

If the dryer is active (running) and the main door is opened the “MAIN” L.E.D. indicator will go out and the display will read “MAIN dOOR.” The dryer will stop until the main door has been closed, at which time the L.E.D. display will read “PRESS START.” At this time, to resume the drying cycle press “ENTER/START” key.

“DRUM” (TUMBLER HI-LIMIT) Input L.E.D. Indicator

Should be on at all times (unless the tumbler hi-limit switch opens prior during the cycle while the heat was on the display would read “dRUM Safety FAIL”). The machine will run with no heat for 3 minutes or until the temperature drops below 100º F (38º C). Then the machine will shut down still displaying “dRUM SAFETY FAIL” with an audio indication.

“SAIL” (SAIL SWITCH) Input L.E.D. Indicator

This routine will prevent start up on the machine unless the sail switch is in the correct position. If the sail switch is in the closed position prior to start, the “SAIL” output L.E.D. indicator will be off, the machine will not start and the display will read “SAIL SWITCH FAIL” along with an audio indication.

If the sail switch opens during the cycle the “SAIL” output L.E.D. will go out and the display will read “NO AIRFLOW.” The machine will run with no heat for 3 minutes or until the temperature drops below 100º F (38º C). Then the machine will shut down still displaying “NO AIRFLOW” along with an audio indication.

“BURN” (BURN HI-LIMIT) Input L.E.D. Indicator

This routine monitors the temperature of the burner. If the burner hi-limit opens during the cycle while the heat was on the “BURN” output L.E.D. indicator goes out and the display reads “bURNER SAFETY FAIL.” The machine will run with no heat for 3 minutes or until the temperature drops below 100º F (38º C) then the machine will shut down still displaying “bURNER SAFETY FAIL” with an audio indication.

“FLAME” (bURNER CONTROL FAIL) Input L.E.D. Indicator

This routine monitors the ignition control’s gas valve output response. If the valve output signal is not present from the ignition control within the valve time limits the microprocessor determines the ignition control has failed. If this occurs when the cycle is active the “FLAME” output L.E.D. indicator will go out and the display will read “bURNER CONTROL FAIL.” The machine will run with no heat for 3 minutes or until the temp drops below 100º F (38º C). Then the machine will shut down still displaying “bURNER CONTROL FAIL” with an audio indication.

“POWER SUPPLY” Input L.E.D. Indicator

Should be on at all times (even if the dryer is not running). The power supply L.E.D. output indicator will not be on if the power supply fuse to the Phase 6 OPL microprocessor is not present. If the power supply fuse is faulty the L.E.D. output will be off and there will be no display or keypad function. The “FUSE,” “LINT,” and “DRUM” output L.E.D. indicators will remain on.

Phase 7 OPL System Diagnostics ___

IMPORTANT: You must disconnect and lockout the electric supply and the gas supply or the steam supply before any covers or guards are removed from the machine to allow access for cleaning, adjusting, installation, or testing of any equipment per OSHA standards.

All major circuits, including door, microprocessor temperature sensor, heat and motor circuits are monitored. The Phase 7 OPL microprocessor controller (computer) will inform the user, via the L.E.D. display of certain failure messages, along with L.E.D. indicators on the Input/Output board on the back panel of the front right control door.

Diagnostic (L.E.D. Display) Fault Messages

MAIN DOOR OPENED – A main door is open, when it should be closed.

EXHAUST HIGH TEMP FAULT – Indicates the temperature in the tumbler is above 220º F (104º C).

LINT ACCESS OPEN – Indicates the lint drawer is open and needs to be closed.

EXHAUST HIGH LIMIT FAULT – Indicates the temperature disk in the exhaust has opened.

SAIL SWITCH CLOSED FAULT – Sail switch is closed and should be opened.

SAIL SWITCH OPEN FAULT – Sail switch is open and should be closed.

BURNER HIGH LIMIT FAULT – Indicates the temperature disk in the burner has opened.

BURNER IGNITION CONTROL FAULT – No signal to gas valve from DSI module during trial for ignition time.

IGNITION FAULT – Gas valve did not remain open after trial for ignition. Indicates that no flame was detected.

FLAME FAULT – Indicates flame was detected during trial for ignition, but failed sometime after. This condition must reoccur for 5 retries before fault occurs.

ROTATION FAULT – Indicates the tumbler is not rotating.

OPEN EXHAUST TEMPERATURE PROBE – Indicates the exhaust temperature probe is open or shorted.

OPEN S.A.F.E. SYSTEM PROBE FAULT – Indicates the temperature probe for the S.A.F.E. system is open or shorted.

LOW VOLTAGE FAULT – Indicates power has dropped below the operating values and will shutdown.

BURNER PURGE FAULT – The gas valve signal is present during the prepurge time.

MODEL ERROR, ENTER CORRECT MODEL – The wrong model was selected for the dryer.

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American Dryer Corporation

450412 - 4

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Contents ML-96 / ML-122 Model no Serial NumbersTable of Contents Cleaning Routine MaintenanceSafety Precautions Important InformationInstallation Requirements Electrical and Gas Requirements Operational Service Check ProcedureDescription of Parts Control Panel MicroprocessorSteam Coil and Damper System Gas Burner AssemblyReversing Relay Panel Steam Coil pH LevelMain Door Switch Drive Shaft AssemblyIdler Shaft Assembly Sail Switch Gas Models OnlyServicing Brushing on a soapy water solution Microprocessor Temperature Sensor Probe ReplacementGas Valve Replacement Main Burner Orifices ReplacementThermostats Burner Tubes ReplacementIgnition Module Replacement To Convert Natural Gas to L.P. GasSail Switch Assembly Gas Models Only Steam Damper Actuator System Service and ReplacementMain Door Switch Replacement Steam Coil ReplacementMay be needed to remove and install the steam coil Front Panel and Main Door AssembliesDrive Motor Pulley Replacement Front Panel ReplacementTumbler Wheel Replacement on Idler Assembly Tumbler Wheel Replacement on Drive AssemblyBasket Assembly Adjustment Rotational Sensor Assembly 15/16 5 cm Flange Bearing ReplacementInch Support Wheel Replacement Idler Shaft Pillow Block Bearing ReplacementDrive Motor V-Belts Replacement Belt Adjustment Motor to Drive AxleMotorized Impellor Blower Replacement Drive Motor ReplacementTroubleshooting Diagnostic L.E.D. Display Failure Codes Phase 6 OPL System DiagnosticsBurner hi-limit safety thermostat Is tripping Overload for impellor fan motor Is trippingD. Display Indicators D. Display Indicator NumberHT1 Heat Output L.E.D. Indicator FAN Blower Output L.E.D. IndicatorAIR AIR JET Output L.E.D. Indicator Optional Fuse Main Fuse Input L.E.D. IndicatorPhase 7 OPL System Diagnostics Diagnostic L.E.D. Display Fault MessagesInputs Input/Output Board L.E.D. IndicatorsData Label OutputsHow to Use a Manometer 450412 ADC Part No 4 01/02/08
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ML-96, ML-122 specifications

The ADC ML-122 and ML-96 are two advanced communication devices designed for efficient data collection and transmission in various applications. Both models are renowned for their robust performance and user-friendly features, which cater to a diverse range of industries.

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In conclusion, the ADC ML-122 and ML-96 stand out in their respective markets due to their innovative features, reliable technologies, and user-friendly designs. With their flexibility and performance, they continue to set the standard for data logging and communication monitoring technologies.
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