American Dryer Corp MD-170 manual 621 kPa, Diagram

Page 35

4.Steam Damper Connections

The MDS-170 steam dryer is manufactured with a pneumatic (piston) damper system which requires an external supply of compressed air. The air connection is made to the steam damper solenoid valve which is located at the rear of the top console.

a. Air Requirements

COMPRESSED AIR SUPPLY		AIR PRESSURE

Normal		80 PSI	552 kPa

Minimum Supply		70 PSI	483 kPa

Maximum Supply		90 PSI	621 kPa

Shaded areas are stated in metric equivalents

b.Air Connection

Air connection to system -- 1/8-inch F.P.T.

c.No air regulation or filtration is provided with the dryer. External regulation/filtration of 80 PSI (552 kPa) must be provided. It is suggested that a regulator/filter gauge arrangement be added to the compressed air line just before the dryer connection. This is necessary to insure that correct and clean air pressure is achieved.

5.Steam Damper System Operation

The MDS-170 steam damper, as shown in the top illustration on page 32, allows the coil to stay constantly charged eliminating repeated expansion and contraction. When the damper is opened, the air immediately passes through the already hot coil, providing instant heat to start the drying process. When the damper is closed, ambient air is drawn directly into the tumbler (basket), allowing a rapid cool down.

Diagram 1 -- shows the damper in the heating (open) mode, allowing heat into the tumbler (basket).

Diagram 2 -- shows the damper in the cool down (closed) mode, pulling ambient air directly into the tumbler (basket) without passing through the coils.

NOTE: With the dryer off or with no air supply, the damper is in the cool down mode as shown in

Diagram 2.

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Contents Maytag Co MD-170 Installation/Operators ManualRetain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Important Information SectionWhat to do if YOU Smell GAS Safety PrecautionsGAS Supply or the Steam Supply Before ANY Covers or Specifications GAS and Steam Specifications / Component IdentificationSpecifications MDG-170 Gas MDS-170 Steam Component Identification Page Location Requirements Installation ProceduresUNPACKING/SETTING UP Round duct can now be connected to the dryer Dryer Enclosure Requirements Fresh AIR Supply Create a Potential Fire Hazard Exhaust RequirementsPage Page Page Page Page Electrical Information MDG-170 Gas MDS-170 Steam Page Page GAS Information Type of GAS Latest Edition Page Steam Requirements High Pressure Steam InformationSteam Damper System 621 kPa DiagramPage Preparation for OPERATION/START-UP Switch Otherwise the Dryer will not StartPreoperational Tests Natural Gas Inches W.C .5 millibars Basket Coating Shut Down Instructions621 kPa Compressed AIR RequirementsParts SERVICE/PARTS InformationService Returning Warranty Cards Warranty InformationClean the lint drawer or screen every third or fourth load Routine MaintenanceCleaning Createa Potentialfire Hazard Lubrication AdjustmentsDrive motor is not operating does not start TroubleshootingFailed blower impellor/fan drive shaft bearings Blower impellor/fan motor is not operating does not startFailed microprocessor controller computer Failed keyboard touchpad label assembly GAS Models Steam Models Dryer operates but is taking too long to dry Gas Models Condensation on main door glass AA. Excessive noise and/or vibration Dryer or scraping noise at tumbler basket areaFailed drive motor contactor relay Failed motor Failed blower impellor/fan drive shaft bearings Steam Models Gas Models Steam Models Condensation on main door glass Excessive noise and/or vibration Timing Legend Reversing Timer SPIN/DWELLADJUSTMENTSData Label Location / Information GAS Manifold Pressure for GAS Dryers Data LabelMicroprocessor computer Board Procedure for Functional Check Replacement ComponentsModels manufactured with ADC module Part No Theory Of Operation P O R T a N T ADC P/N114501 02/16/00-25 2- 02/25/00-250