American Dryer Corp ML-75V installation manual

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a.The pressure of the condensate in the steam supply will cause water hammer and subsequent heat exchanger (steam coil) failure. The steam supply connection into the main supply line must be made with a minimum 10-inch (25.4 cm) riser. This will prevent any condensate from draining towards the dryer.

b.The steam supply line to the dryer must include a 12-inch (30.48 cm) riser along with a drip trap and check valve. This will prevent any condensate from entering the steam coil.

c.Flexible hoses or couplings must be used. The dryer vibrates slightly when it runs and this will cause the steam coil connections to crack if they are hard piped to the supply and return mains.

d.Shutoff valves for each dryer should be installed in the supply line, return line, and drip trap return line. This will allow the dryer to be isolated from the supply main and the return main if the dryer needs maintenance work.

e.Install an inverted bucket steam trap and check valve at least 12-inches (30.48 cm) below the steam coil as close to the coil as possible.

A trap with a capacity of 700 lbs (317.51 kg) of condensate per hour at 125 psi (8.62 bar) is needed for each unit.

f.The supply line and the return line should be insulated. This will save energy and provide for the safety of the operator and maintenance personnel.

g.Water pockets in the supply line, caused by low points, will provide wet steam to the coil possibly causing steam coil damage. ALL horizontal runs of steam supply piping should be pitched 1/4-inch (6.35 mm) for every 1 foot (0.31 meters) back towards the steam supply header causing the condensate in the line to drain to the header. Install a bypass trap in any low point to eliminate wet steam.

IMPORTANT: Flexible hose/coupling must beused. Coil failure due to hard plumbing connections will VOID THE WARRANTY.

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Contents ML-75V Installation Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Safety Precautions SectionStandards SPECIFICATIONS/COMPONENT Identification SpecificationsSpecifications Component Identification Page Installation Procedures Location RequirementsUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements General Exhaust Ductwork InformationOutside Ductwork Protection Page Page Page Electrical Information Electrical RequirementsGas and Steam Models Only Page Single-Phase Electrical Lead Connections Page GAS Information Type of GAS Page Page Operating Steam Pressure Steam InformationPage Compressed Air Supply Air Pressure Page Preparation for OPERATION/START-UP Preoperational Tests Basket Tumbler Coating Preoperational Instructions Coin Models NON-COIN Models Shutdown Instructions Dual Timer DryersReversing Timer SPIN/DWELL Adjustments Parts SERVICE/PARTS InformationService Warranty Information Returning Warranty CardsWarranty Returning Warranty PartsPage Routine Maintenance CleaningAdjustments LubricationProcedure for Functional Check Replacement Components Page Data Label Information Serial Number Dual Timer Manual Reset Burner HI-LIMIT InstructionsPhase S. In Action Fire Suppression System F.S.SInstallation Before YOU Start Check Local Codes and PermitsTypical water supply Optional Manual Bypass S. Theory of Operation S. Water Valve Check Starting a Cycle When Computer is in F.S.S. is Disabled Mode ADC Part No 05/26/05