ADC ML-175, ML-190 Main Door Switch, Sail Switch Gas Models Only, Burner Hi-Limit Gas Models Only

Page 9

Main Door Switch

The main door switch is located near the main door hinge. When the main door opens, the switch will also open, preventing the dryer from operating. The main door switch is a safety device and should never be disabled.

Sail Switch (Gas Models Only)

The sail switch is located on the front of the burner box. A sail switch consists of a round damper plate on a lever arm, which is in contact with an electric switch. When the fan/ blower comes on, it draws air through the burner box. This creates a negative pressure inside the burner box, and this negative pressure pulls in the round damper and activates the sail switch.

Burner Hi-Limit (Gas Models Only)

A burner hi-limit thermostat is located on the burner. This is

amanual reset disc-type thermostat set at 330° F (165° C). If the flame in the burner should get too hot, this thermostat will shut off the burner. This is generally caused by low airflow through the dryer.

Tumbler Hi-Limit

This is located in the lint compartment above the lint drawer. This bracket consists of two devices. One is a temperature sensor probe and the other is a hi-limit thermostat, which is set at 225° F (107° C).

450431 - 3

www.amdry.com

9

Image 9

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 Switch Computer Controls Lint DrawerIntroduction Ignition Controls Page Thermostats To Convert from Natural Gas to L.P. GasTo 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 BearingsRotational Sensor Switch Replacement To Replace Speed Reducing Shaft BearingsTo Replace Rear Tumbler Shaft Support Wheels Basket and Support BeltsMotors 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