ADC ML-175, ML-190 service manual Thermostats, To Convert from Natural Gas to L.P. Gas

Page 13

To Convert from 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.

Remove the four screws which secure the top cap assembly. This assembly contains the regulator adjustment screw and the terminal connections.

Replace the top cap assembly with the L.P. version.

To install the new L.P. orifices refer to “Replace Main Burner Orifices”.

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

Reverse the procedure for reinstalling valve assembly to the dryer.

! WARNING

Test all connections for leaks by brushing on a soapy water solution.

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.

To Replace Burner Tubes

Refer to “Replace Gas Valve” and follow the instructions up to “Remove gas valve/manifold assembly from dryer”.

Remove four screws securing manifold rest and remove rest.

Remove the screws securing the front flanges of the burner tubes to the burner tube rest.

Remove the screws securing the burner tube rest to the oven and remove this rest.

Remove screws securing the burner box cover plate to the oven and remove this plate.

Remove burner tubes by sliding them out. Replace by reversing procedure.

! WARNING

Test all connections for leaks by brushing on a soapy water solution.

Never test for leaks with a flame!!!

To Replace HSI Module / DSI Module

Discontinue electrical power to the dryer.

Remove the wires connected to the terminal strip at the bottom of the module.

Remove the two pal nuts securing the module to the mounting bracket.

Replace module by reversing procedure. Reestablish electrical power to the dryer.

Thermostats

To Replace Burner Hi-Limit Thermostat (Gas Models Only)

IMPORTANT: Under no circumstances should heat circuit safety devices ever be disabled.

Discontinue electrical power to the dryer. Disconnect wires from hi-limit thermostat.

Remove screw, washer, and nut securing thermostat to the bracket. Remove thermostat.

450431 - 3

www.amdry.com

13

Image 13
Contents American Dryer Corporation ML-175 / ML-190Date of Purchase Model no RESELLER’S Name Serial Numbers Retain This Manual in a Safe Place for Future ReferenceTable of Contents Safety Precautions Routine MaintenanceCleaning Important InformationInstallation Requirements Description of Parts Operational Service Check ProcedureCompressed Air Requirements Electrical and Gas RequirementsReversing Relay Panel Gas Burner AssemblySteam Coil and Damper System Steam Coil pH LevelRotational Sensor Assembly Idler Shaft AssemblySpeed Reducing Shaft Drive ShaftSail Switch Gas Models Only Main Door SwitchBurner Hi-Limit Gas Models Only Tumbler Hi-LimitLint Drawer Lint Drawer Switch Computer ControlsIntroduction Ignition Controls Page To Convert from Natural Gas to L.P. Gas ThermostatsTo Replace Burner Hi-Limit Thermostat Gas Models Only Front Panel and Main Door Assemblies Sail Switch Assembly Gas Models OnlyPulleys To Install New Main Door GlassTo Replace Front Panel To Replace Drive Shaft PulleysBearings Tumbler AlignmentTo Replace Motor Pulley To Replace Drive/Idler Shaft Pillow Block BearingsTo Replace Speed Reducing Shaft Bearings Rotational Sensor Switch ReplacementTo Replace Rear Tumbler Shaft Support Wheels Belts Basket and SupportMotors Impellor Lint Drawer AssemblyTo Replace Fan Shaft and/or Fan Shaft Bearings To Replace Lint ScreenTroubleshooting 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 Indicator Number D. Display IndicatorsAIR AIR JET Output L.E.D. Indicator Optional FAN Blower Output L.E.D. IndicatorHT1 Heat Output L.E.D. Indicator Fuse Main Fuse Input L.E.D. IndicatorPhase 7 OPL System Diagnostics Technical Information Input / Output Board L.E.D. IndicatorsMotor Plate High and Low Voltage ExampleHow To Use a Manometer Using a ManometerData Label Tool List450431 ADC Part No 3 06/17/08