American Dryer Corp ML-78II installation manual Fresh AIR Supply Requirements

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D. FRESH AIR SUPPLY REQUIREMENTS

When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the make-up air is inadequate, drying time and drying efficiency will be adversely affected. Ignition problems and sail switch “fluttering” problems may result, as well as premature motor failure from overheating.

Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An unrestricted source of air is necessary for each dryer. An airflow of 1,200 cfm (cubic feet per minute) (33.98 cmm [cubic meters per minute]) must be supplied to each gas dryer. As a general rule, an unrestricted air entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.41 square meters) is required for each dryer. The dryer must be installed with provisions for adequate combustion and make-up air supply.

To compensate for the use of registers or louvers used over the openings, this make-up air must be increased by approximately thirty-three percent (33%). Make-up air openings should not be located in an area directly near where exhaust vents exit the building.

It is not necessary to have separate make-up air openings for each dryer. Common make-up air openings are acceptable. However, they must be set up in such a manner that the make-up air is distributed equally to ALL the dryers.

EXAMPLE: For a bank of four (4) dryers, two (2) unrestricted openings measuring 2 feet x 1-1/2 feet (0.60 meters x 0.45 meters) (6 square feet [0.56 square meters]) is acceptable.

Allowances must be made for remote or constricting passageways or where dryers are located at excessive altitudes or predominantly low pressure areas.

IMPORTANT: Make-up air must be provided from a source free of dry cleaning solvent fumes. Make-up air that is contaminated by dry cleaning solvent fumes will result in irreparable damage to the motors and other dryer components.

NOTE: Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.

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Contents ML-78II Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Routine Maintenance Receiving and Handling Important InformationWhat to do if YOU Smell GAS Safety PrecautionsPage Specifications SPECIFICATIONS/COMPONENT IdentificationSpecifications MLG-78II Gas Component Identification Page Location Requirements Installation ProceduresBefore Starting the Dryer UNPACKING/SETTING UPDryer Enclosure Requirements Fresh AIR Supply Requirements Horizontal Venting Exhaust RequirementsPage Page Page Electrical Requirements Electrical InformationMLG-78II Gas Electrical Service Specifications PER DryerPage Black Page Page GAS Information Type of GAS Page Page Preparation for OPERATION/START-UP Preoperational Tests Basket Coating Shut Down Instructions Preoperational InstructionsParts SERVICE/PARTS InformationService Returning Warranty Cards Warranty InformationWarranty Returning Warranty PartsPage Suggested Cleaning Schedule Routine MaintenanceCleaning Lubrication AdjustmentsTiming Legend Reversing Timer SPIN/DWELL AdjustmentsData Label Data Label InformationSerial Number Procedure for Functional Check Replacement Components P O RTA N T