American Dryer Corp ML-75HS installation manual Steam Information

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Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch pipe gas loop be installed in the supply line serving a bank of dryers. An in-line pressure regulator must be installed in the gas supply line (header) if the (natural) gas pressure exceeds 12.0 inches of water column pressure.

NOTE: A water column test pressure of 3.5 inches for natural gas and 10.5 inches for L.P. (liquid propane) dryers is required at the gas valve pressure tap of each dryer for proper and safe operation.

A1/8" N.P.T. plugged tap, accessible for a test gauge connection, must be installed in the main gas supply line immediately upstream of each dryer.

IMPORTANT: Pipe joint compounds that resist the action of natural gas and L.P. gas must be used.

IMPORTANT: Test ALL connections for leaks by brushing on a soapy water solution (liquid detergent works well).

WARNING: NEVER TEST FOR LEAKS WITH A FLAME!!!

ALL components/materials must conform to National Gas Code specifications. It is important that gas pressure regulators meet applicable pressure requirements and that gas meters be rated for the total amount of ALL the appliance BTU's being supplied.

IMPORTANT: The dryer and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).

NOTE: The dryer must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pressure test of the gas supply system at test pressures equal to or less than 1/2 psig (3.5 kPa).

H. STEAM INFORMATION

It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the steam plumbing installation is adequate and conforms with local and state regulations or codes.

IMPORTANT: Failure to comply with the requirements stipulated in this manual can result in component failure which will VOID THE WARRANTY.

NOTE: The MLS-75 is manufactured with a pneumatic (piston) damper system which requires an external supply of air (80 PSI +/- 10 PSI).

1.Steam Coil PH Level

The normal PH level for copper type steam coils must be maintained between a value of 8.5 to 9.5. For steel type steam coils the PH level must be maintained between a value of 9.5 to 10.5. These limits are set to limit the acid attack of the steam coils.

IMPORTANT: Coil failure due to improper PH level will VOID THE WARRANTY.

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Contents ML-75HS Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Section Important InformationSafety Precautions Damage plastics or rubber and also may be a fire hazardFrom the Machine to Allow Access for Cleaning SPECIFICATIONS/COMPONENT Identification SpecificationsSpecifications Component Identification Dryer Front ViewDryer Rear View Installation Procedures Location RequirementsUNPACKING/SETTING UP Before Starting the DryerDryer Enclosure Requirements Fresh AIR Supply Exhaust Requirements Horizontal VentingReduced Anywhere Down Stream of the Dryer Page Page Page Electrical Information Electrical RequirementsMLG-75 Gas MLS-75 Steam MLE-75 Electric Electric Models OnlyGrounding Single-Phase 1Ø Electrical Connections Leads Page Phase Wiring Connections/Hookup Reversing Models Only Electrically Heated Models only GAS Information Gas SupplyInch N.P.T. minimum Gas ConnectionsInch N.P.T 200,000 Natural GasPiping/Connections Steam Information Installation Instructions Steam Requirements High PressurePage Compressed Air Supply Air Pressure Steam Damper System Operation Steam Damper Air Piston Flow Control Operation Adjustment Preparation for OPERATION/START-UP Preoperational Tests Gas DryersElectrically Heated Dryers Preoperational Instructions Shut Down Instructions Service SERVICE/PARTS InformationParts Returning Warranty Cards Warranty InformationReturning Warranty Parts Page Cleaning Routine MaintenanceOperational running hours per day Adjustments DaysProcedure for Functional Check Replacement Components Microprocessor computer BoardPage Page Reversing Timer SPIN/DWELL Adjustments Timing LegendTechnical Information Data LabelSerial Number ADC113001
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