ADC ML-82 To Replace Gas Valve Refer to burner illustration on, To Replace Main Burner Orifices

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To Replace Gas Valve (Refer to burner illustration on page 14 )

1.Discontinue electrical power to the dryer.

2.Close shut-off valves in gas supply line.

3.Disconnect gas valve wiring.

NOTE: Identify location of each wire for correct reinstallation.

4.Break union connection before gas valve.

5.Loosen and remove four (4) screws securing pipe brackets to burner.

6.Remove valve and manifold assembly from dryer.

7.Remove valve mounting bracket, manifold and piping from gas valve.

8.Reverse procedure for installing new gas valve.

WARNING: Test ALLconnections for leaks by brushing on a soapy water solution.

WARNING: NEVER TEST FOR LEAKS WITHA FLAME!!!

To Replace Main Burner Orifices

1.Refer to “To Replace Gas Valve” above and follow Step #1 through Step #6.

2.Unscrew main burner orifices and replace.

NOTE: Use extreme care when removing and replacing orifices. These orifices are made of brass and are easily damaged.

3. Reverse the removal procedure for reinstalling.

NOTE: Test ALL connections for leaks by brushing on a soapy water solution.

WARNING: NEVER TEST FOR LEAKS WITH A FLAME!!!

To Test and Adjust Gas (Water Column) Pressure

There are two (2) types of devices commonly used to measure column pressure. They are spring and mechanical- type gauges and manometers. The spring and mechanical-type gauge is not recommended, because it is easily damaged and not always accurate. A manometer is simply a glass or transparent plastic tube with a scale in inches. When filled with water and pressure applied, the water in the tube rises showing the exact water column pressure.

NOTE: Manometers are available from the factory by ordering ADC P/N 122804.

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Contents ML-82 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section SERVICE/PARTS Information Important Information Safety PrecautionsStandards Specifications SPECIFICATIONS/COMPONENT IdentificationSpecifications MLG-82 Gas MLS-82 Steam Component Identification Page Cleaning Routine MaintenanceLubrication AdjustmentsDescription of Parts Control Panel AssemblyDoor Switch Assembly Lint Drawer Lint Drawer SwitchTumbler Bearing Assembly Basket and Support AssemblyTemperature Sensor Bracket Assembly Blower Motor Idler ARM AssemblyDRIVE/FAN Mount Assembly Front Panel Assembly HSI HOT Surface Ignition Burner BOX AssemblySail Switch Assembly Reversing Relay Panel Introduction ServicingTo Replace Computer Board To Replace Keyboard Label AssemblyTo Replace Microprocessor Temperature Sensor Probe Computer ControlsHSI Ignitor Flame Sensor Probe Ignition ControlsTo Remove Hot Surface Ignitor To Remove Flame Sensor ProbeTo Replace Main Burner Orifices To Test and Adjust Gas Water Column PressureTo Replace Gas Valve Refer to burner illustration on To Convert Natural Gas to L.P. Gas To Replace Burner HI-LIMIT Thermostat GAS Models only To Replace Burner TubesTo Replace HSI Module Sail Switch Assembly GAS Models only To Adjust Sail Switch To Replace Sail SwitchTo Install New Main Door Glass To Replace Main Door AssemblyTo Replace Main Door Hinge Block To Replace Front PanelTo Replace Steam Coil Damper System Steam Controls InstallationTo Replace Steam Coil To Replace PistonTo Replace The Needle Valve To Replace the 3-Way Micro ValveTo Replace The Rear Tumbler Bearing Tumbler and Bearing AssemblyTo Replace Tumbler Pulley Reversing To Replace Idler Bearing Idler Shaft and Bearing AssemblyTo Replace The Front Tumbler Bearing To Replace Idler PulleyTumbler Alignment Vertical Drive PulleyTumbler Basket To Replace The Tumbler And/Or Tumbler Support Tumbler Alignment LateralBelts Refer to Illustrations in Sections I and K Belt Tension Adjustment-Tumbler To IdlerTo Replace V-Belts Belt Tension Alignment Motor To IdlerDiagnostic L.E.D. Display Failure Codes Phase 6 OPL System DiagnosticsPage E.D. Display Indicator Number E.D. Light Emitting Diode Display IndicatorsPage Fuse Main Fuse Input L.E.D. Indicator FAN Blower Output L.E.D. light emitting diode IndicatorAIR AIR JET Output L.E.D. Indicator Optional HT1 Heat Output L.E.D. IndicatorSail Sail Switch Input L.E.D. Indicator Lint Lint Door Input L.E.D. light emitting diode IndicatorMain Main Door Input L.E.D. Indicator Drum Tumbler HI-LIMIT Input L.E.D. IndicatorPower Supply Input L.E.D. Indicator E.D. Codes GAS only Ignition Attempt Failure Fault CodesGAS Models only Power 24 VAC is not Evident AT GAS Valve GAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT CircuitComputer will not accept keypad touchpad entries TroubleshootingThermal overload for drive motor is tripping Drive motor runs, burner is on, but basket will not turnDryer operates but is taking too long to dry Overload for impellor fan motor is tripping Burner hi-limit safety thermostat is trippingThere is excessive vibration coming from the basket Electrical Troubleshooting Drive motor reverses but does not forward, blower motor runs No Display ConditionLint Door Condition Blower motor does not operate, drive motor runsTemp Sensor Fail Check Main Door ConditionFor example Technical InformationMotor Plate High and LOW Voltage Contact American Dryer Corporation Data LabelAmerican Gas Association, Canadian Gas Association Data Label Model DryerManual Reset HI-LIMIT Instructions Computer Logic Parts SERVICE/PARTS InformationService Returning Warranty Parts Warranty InformationReturning Warranty Cards Page ML-82 Tool List ADC 450404 1- 12/21/99-50