ADC ML-122, ML-96 Phase 6 OPL System Diagnostics, Overload for impellor fan motor Is tripping

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Overload for impellor (fan) motor

is tripping...

Either an exceptionally low or high voltage supply. Motor bearing failure.

Motor vents are blocked with lint. Failed motor.

Failed overload.

Out of balance impellor (fan). Insufficient make-up air.

Burner hi-limit safety thermostat

is tripping...

Insufficient exhaust ductwork, size or restriction in exhaust system.

Insufficient make-up air. Lint screen needs cleaning. Damaged impellor.

L.E.D. display reads “Temp Sensor Failure Check Temp Sensor Fuse.” or “Open Exhaust Temperature Probe.”...

Check 1/8-amp fuse on microprocessor controller (computer). (Phase 6 units only.)

Faulty microprocessor controller (computer) temperature sensor probe.

Open circuit or short in either one of two wires leading from the sensor probe to the computer...

Faulty microprocessor controller (computer).

Dryer does not start.

Display reads “main door” or “lint door” with an audio indication...

Main door is open. Lint drawer is open.

Faulty main door or lint door switch.

Open circuit in either main door or lint drawer switch harnesses.

Faulty 24 VAC transformer.

There is excessive vibration coming

from the tumbler...

Tumbler is out of adjustment.

Drive shaft or idler shaft is out of alignment.

Faulty pillow block bearing or 4-inch (10.16 cm) rear wheel. Faulty tumbler wheel.

Drive motor and shaft not aligned.

Phase 6 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 6 OPL microprocessor controller (computer) will inform the user, via the L.E.D. display of certain failure codes, along with indicators both in L.E.D. display and at the output of each relay (and door switch circuit) to easily identify failures.

Diagnostic (L.E.D. Display) Failure Codes

SAIL SWITCH FAIL – This routine will prevent start up on the machine unless the sail switch is in the correct position. If the sail switch is closed prior to start up the display will read “SAIL SWITCH FAIL” along with an audio indication.

No AIRFLOW – If the sail switch opens during cycle operation the display will read “No AIRFLOW” along with an audio indication. The machine will continue to run with no heat for 3 minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “No AIRFLOW” with an audio indication.

bURNER SAFETY FAIL – Routine monitors the temperature above the burner. If the burner hi-limit switch opens the display will read “bURNER SAFETY FAIL.” The machine will run with no heat for 3 minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “bURNER SAFETY FAIL” with an audio indication.

dRUM SAFETY FAIL – This routine monitors the tumbler temperature if the tumbler hi-limit switch opens prior or during the cycle while the heat was on the machine will display “dRUM SAFETY FAIL.” The machine will continue to run with no heat for 3 minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “dRUM SAFETY FAIL” with an audio indication.

No HEAT – This routine monitors the burner ignition. If the burner misignites (does not light) the ignition module will check to see of the microprocessor program has any retries left. The standard retry count is 2. If the module notices that there are retries left it will purge for 1 minute then try to ignite the burner again. The ignition module will try this for a total of 3 times or until there are no retries left. If the burner does not ignite after 3 attempts the L.E.D. display will display the error code “no heat” with an audio indication. When this occurs the machine will run with no heat for 3 minutes or until the temperature drops below 100º F (38º C).

IMPORTANT: For other countries, such as Australia, the retry count may not apply due to local approvals.

450412 - 4

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Contents ML-96 / ML-122 Serial Numbers Model noTable of Contents Important Information Routine MaintenanceSafety Precautions CleaningInstallation Requirements Control Panel Microprocessor Operational Service Check ProcedureDescription of Parts Electrical and Gas RequirementsSteam Coil pH Level Gas Burner AssemblyReversing Relay Panel Steam Coil and Damper SystemSail Switch Gas Models Only Drive Shaft AssemblyIdler Shaft Assembly Main Door SwitchServicing Main Burner Orifices Replacement Microprocessor Temperature Sensor Probe ReplacementGas Valve Replacement Brushing on a soapy water solutionTo Convert Natural Gas to L.P. Gas Burner Tubes ReplacementIgnition Module Replacement ThermostatsSteam Damper Actuator System Service and Replacement Sail Switch Assembly Gas Models OnlyFront Panel and Main Door Assemblies Steam Coil ReplacementMay be needed to remove and install the steam coil Main Door Switch ReplacementFront Panel Replacement Drive Motor Pulley ReplacementTumbler Wheel Replacement on Idler Assembly Tumbler Wheel Replacement on Drive AssemblyBasket Assembly Adjustment Idler Shaft Pillow Block Bearing Replacement 15/16 5 cm Flange Bearing ReplacementInch Support Wheel Replacement Rotational Sensor AssemblyDrive Motor Replacement Belt Adjustment Motor to Drive AxleMotorized Impellor Blower Replacement Drive Motor V-Belts ReplacementTroubleshooting Overload for impellor fan motor Is tripping Phase 6 OPL System DiagnosticsBurner hi-limit safety thermostat Is tripping Diagnostic L.E.D. Display Failure CodesD. Display Indicator Number D. Display IndicatorsFuse Main Fuse Input L.E.D. Indicator FAN Blower Output L.E.D. IndicatorAIR AIR JET Output L.E.D. Indicator Optional HT1 Heat Output L.E.D. IndicatorDiagnostic L.E.D. Display Fault Messages Phase 7 OPL System DiagnosticsOutputs Input/Output Board L.E.D. IndicatorsData Label InputsHow 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.