American Dryer Corp ML-122D installation manual Compressed AIR Pressure AIR Supply

Page 33

4.Steam Damper Air System Connections

The MLS-122 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 PRESSURE

AIR SUPPLY

 

 

 

 

 

Normal

80 PSI

5.51 bars

 

 

 

Minimum Supply

70 PSI

4.82 bars

 

 

 

Maximum Supply

90 PSI

6.21 bars

 

 

 

Shaded areas are stated in metric equivalents

b.Air Connection

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

c.No air regulator or filtration is provided with the dryer. External regulation/filtration of 80 PSI (5.51 bars) 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 MLS-122 steam damper, as shown in the top illustration (Diagram 1) on page 30, 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 basket (tumbler), allowing a rapid cool down.

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

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

NOTE: With the dryer off or with no air supply, the steam damper is in cool down mode as shown in Diagram 2 (refer to the illustration on the following page).

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Contents ML-122D Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Receiving and Handling Important InformationWhat to do if YOU Smell GAS Safety PrecautionsStandards Specifications GAS and Steam SPECIFICATIONS/COMPONENT IdentificationSpecifications MLG-122 Gas MLS-122 Steam Component Identification Page Location Requirements Installation ProceduresUNPACKING/SETTING UP Lift the console module off the dryer base C Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Page Page Page Page Electrical Requirements Electrical InformationML-122 Gas and Steam Only Page GAS Information Type of GAS Page Page Steam Information Operating Steam PressurePage Compressed AIR Pressure AIR Supply Page Preparation for OPERATION/START-UP Compressed AIRPreoperational Tests Inches 26.1 mb water column Basket Coating Operating Instructions Shut Down Instructions SERVICE/PARTS Information ServiceParts Returning Warranty Cards Warranty InformationWarranty Returning Warranty PartsPage Cleaning Routine MaintenanceSteam Dryers Lubrication AdjustmentsTiming Legend Reversing Timer SPIN/DWELL AdjustmentsProcedure for Functional Check Replacement Components Page Page Page Data Label Data Label InformationSerial Number For Phase 6 Models ADC 02/16/00-15 11/10/00-10 08/13/01-25