ADC ML-82 service manual To Convert Natural Gas to L.P. Gas

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1. To test gas water column (W.C.) Pressure:

a. Connect water column test gauge connection to gas valve pressure tap (1/8" NPT). This pressure tap is located on the outlet (manifold) side of the valve.

b.Start dryer. With burner on, the correct water column reading in inches would be:

Natural Gas - 3.5 Inches Water Column - 8.7 mb. L.P. Gas - 10.5 Inches Water Column - 26.1 mb.

2.To adjust water column pressure (natural gas only, L.P. gas must be regulated at source):

a. Remove the slotted vent cap on the top of the valve.

b.Turn the slotted adjustment screw located on the top of the valve next to the terminals. Turn clockwise (CW) to increase manifold pressure and counterclockwise (CCW) to decrease.

NOTE: If correct water column pressure cannot be achieved, problems may be due to an undersized gas supply line, a faulty or underrated gas meter, etc.

To Convert Natural Gas to L.P. Gas

NOTE: ALL dryers are sold as natural gas, unless otherwise specified at the time the dryer order was placed. For L.P. gas the dryer must be converted as follows.

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

a.Remove top vent cap.

b.Insert spring and pin.

c.Replace vent cap.

2.Unscrew main burner orifices and replace with L.P. orifices.

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

3. Reverse the procedure for reinstalling valve assembly to the dryer.

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

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

NOTE: There is no regulator provided in an L.P. dryer. The column pressure must be regulated at the source (L.P. tank) or an external regulator must be added to each dryer.

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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 Safety Precautions Important InformationStandards SPECIFICATIONS/COMPONENT Identification SpecificationsSpecifications MLG-82 Gas MLS-82 Steam Component Identification Page Routine Maintenance CleaningAdjustments LubricationControl Panel Assembly Door Switch AssemblyLint Drawer Lint Drawer Switch Description of PartsBasket and Support Assembly Temperature Sensor Bracket AssemblyTumbler Bearing Assembly Idler ARM Assembly DRIVE/FAN Mount AssemblyBlower Motor HSI HOT Surface Ignition Burner BOX Assembly Sail Switch AssemblyFront Panel Assembly Reversing Relay Panel Servicing IntroductionTo Replace Keyboard Label Assembly To Replace Microprocessor Temperature Sensor ProbeComputer Controls To Replace Computer BoardIgnition Controls To Remove Hot Surface IgnitorTo Remove Flame Sensor Probe HSI Ignitor Flame Sensor ProbeTo Test and Adjust Gas Water Column Pressure To Replace Gas Valve Refer to burner illustration onTo Replace Main Burner Orifices To Convert Natural Gas to L.P. Gas To Replace Burner Tubes To Replace HSI ModuleTo Replace Burner HI-LIMIT Thermostat GAS Models only Sail Switch Assembly GAS Models only To Replace Sail Switch To Adjust Sail SwitchTo Replace Main Door Assembly To Install New Main Door GlassTo Replace Front Panel To Replace Main Door Hinge BlockSteam Controls Installation To Replace Steam Coil Damper SystemTo Replace Piston To Replace The Needle ValveTo Replace the 3-Way Micro Valve To Replace Steam CoilTumbler and Bearing Assembly To Replace Tumbler Pulley ReversingTo Replace The Rear Tumbler Bearing Idler Shaft and Bearing Assembly To Replace The Front Tumbler BearingTo Replace Idler Pulley To Replace Idler BearingDrive Pulley Tumbler BasketTumbler Alignment Vertical Tumbler Alignment Lateral To Replace The Tumbler And/Or Tumbler SupportBelt Tension Adjustment-Tumbler To Idler Belts Refer to Illustrations in Sections I and KBelt Tension Alignment Motor To Idler To Replace V-BeltsPhase 6 OPL System Diagnostics Diagnostic L.E.D. Display Failure CodesPage E.D. Light Emitting Diode Display Indicators E.D. Display Indicator NumberPage FAN Blower Output L.E.D. light emitting diode Indicator AIR AIR JET Output L.E.D. Indicator OptionalHT1 Heat Output L.E.D. Indicator Fuse Main Fuse Input L.E.D. IndicatorLint Lint Door Input L.E.D. light emitting diode Indicator Main Main Door Input L.E.D. IndicatorDrum Tumbler HI-LIMIT Input L.E.D. Indicator Sail Sail Switch Input L.E.D. IndicatorPower Supply Input L.E.D. Indicator E.D. Codes Fault Codes GAS Models only Power 24 VAC is not Evident AT GAS ValveGAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT Circuit GAS only Ignition Attempt FailureTroubleshooting Computer will not accept keypad touchpad entriesDrive motor runs, burner is on, but basket will not turn Dryer operates but is taking too long to dryThermal overload for drive motor is tripping Burner hi-limit safety thermostat is tripping Overload for impellor fan motor is trippingThere is excessive vibration coming from the basket Electrical Troubleshooting No Display Condition Drive motor reverses but does not forward, blower motor runsBlower motor does not operate, drive motor runs Lint Door ConditionMain Door Condition Temp Sensor Fail CheckTechnical Information Motor Plate High and LOW VoltageFor example Data Label Contact American Dryer CorporationData Label Model Dryer American Gas Association, Canadian Gas AssociationManual Reset HI-LIMIT Instructions Computer Logic SERVICE/PARTS Information ServiceParts Warranty Information Returning Warranty CardsReturning Warranty Parts Page ML-82 Tool List ADC 450404 1- 12/21/99-50