American Dryer Corp ML-410 manual

Page 37

1.Filter/Regulator Assembly

The compressed air supply to the dryer is connected into the 3/8” F.T.P. fitting of the filter/regulator assembly which is located at the bottom rear of the right side of the base.

The filter/regulator assembly performs two (2) essential functions. The filter removes most solids and liquid particles from the compressed air stream and traps them in its bowl where this waste can be readily removed through the drain valve at the bottom of the bowl.

The filter bowl should be cleaned monthly.

The regulator will remain a nearly constant outlet air pressure so that the dryer’s pneumatics will function normally despite upstream air pressure variations. After the compressed air is connected into the filter/ regulator assembly, adjust the regulator knob so that the gauge needle reads 80 PSI (5.512 bars).

2.Tilting-Piston Solenoid Valves

A two-way-tilt dryer has two (2) of these solenoid valves...one to control the front set of tilting pistons and a second to control the rear set of tilting pistons. A one-way-tilt dryer has only one (1) pair of solenoid valves.

Each valve has five (5) 3/8” F.T.P. ports and two (2) electric solenoid operators, one (1) on each side of the valve.

To tilt the dryer forward, a 24 volt signal is applied to the rear pistons solenoid connector “12” and no voltage is applied to the solenoid connector “14”. The internal spool in the valve will move and 80 PSI (5.512 bars) of air will enter the bottom port of the rear tilting pistons, extending the rear tilting piston rods and tilting the dryer forward for unloading. The top piston ports are bled to the atmosphere.

To level the dryer, the voltage signals are reversed. No voltage is applied to the “12” solenoid, and 24 volts is applied to the “14” solenoid. The valve spool will now move so that 80 PSI (5.512 bars) of air is applied at the top piston ports, while the bottom piston ports are bled to the atmosphere. The piston rod will now retract leveling the dryer. On rear tilt dryers, the front tilting piston solenoid valve acts in the same manner.

The tilting piston valves are 4-way/5 port/3 position valves. If no voltage is applied to both the “12” and “14” solenoids, ALL five (5) valve ports are blocked. This means that, if the dryer is tilting or leveling and power to the dryer is shut off, the pistons will lock in position, holding the dryer in a partially tilted position.

The tilting piston valves and flow control valves are located on the pneumatic plate in the rear of the dryers’ base.

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Contents QUE Faire SI Vous Sentez UNE Odeur DE GAZ What do YOU do if YOU Smell GASPour Votre Sécurité For Your SafetyFor Your Safety Page Table of Contents Air Blower Drive System Cleaning Adjustments LubricationML-410 Reference Guide Page ML-410 Machine Operational Summary ML-410 Operator CONTROLS/INDICATORSEND of CYCLE/AIR JET JOG Forward/Reverse Push-ButtonsEND of CYCLE/HEATER Fault Indicator ML-410 Machine Operation Troubleshooting InformationAIR JET Load Tilted Unload TiltedIf this selection does not operate ONE or Both Burners do not Ignite DRYImportant Information GAS PressureONE Burner will not Ignite During a Drying Cycle ONE Burner will not Ignite AT the Beginning of a CycleTumbler Temperature and HI-LIMIT Information System Ladder DiagramFront Level Switch Rear Level Switch Optional Sprinkler Control Signals Section What to do if YOU Smell GAS Safety PrecautionsStandards Specifications and Dimensions 410 Tilting Clearance Allow Ances DimensionsML-410 1 Door/2-Way Tilt ML-410 1 Door/2-Way Tilt MLS-410 1 Door/2-Way Tilt ML-410 1 Door/2-Way Tilt With Inlet Air Adapter Reassembly of Dryer Installation ProceduresMLG-410 1 Door/Forward Tilt with Sprinkler Important the Flex Hose Must not be Kinked MLG-410 1 Door/Forward Tilt With Sprinkler MLS-410 2 Door/2-Way Tilt Refer to Tilting Piston Reconnection View on MLS-410 2 Door/2-Way Tilt Fresh AIR Supply Requirements Exhaust Requirements Compressed AIR Supply System Page Optional Automatic Piston Operated Load/Unload Doors Electrical InformationOptional Sprinkler Valve Electrical RequirementsMLG-410 Gas MLS-410 Steam Electrical Service SpecificationsMain Grounding GAS Information Type of Gas Technical Gas Data Gas SpecificationsPiping /Connections Page Steam Requirements High Pressure Steam InformationPage Air Requirements Steam Damper Air System ConnectionsAir Connections Air connection to system --- 1/8-inch N.P.T Steam Damper System Operation Water Supply Connection for Optional Sprinkler System Steam Damper Air Piston Flow Control Operation AdjustmentPreoperational Tests Heat Circuit Operational Test a. Gas Models Natural GASBasket Coating Preparation for OPERATION/START-UPShut Down Instructions Parts ServiceReturning Warranty Parts Returning Warranty CardsPage Cleaning Routine MaintenanceMonthly Lubrication AdjustmentsTumbler Basket Drive System Component System DescriptionsTumbler Basket Manual Reset Hi-Limit Safety Thermostat Safety DevicesTumbler Basket AIR Blower Drive SystemSail Switches for Gas Dryers Only Steam Damper Actuator System Optional Sprinkler Circuit Components Optional Sprinkler System ComponentsRefer to the Dryer Nameplate for voltage rating information ML-410 Sprinkler Option Temperature Controller Settings ADC 113128 1- 03/13/00-25