Exhaust Ducting | American Dryer Corp MLS-460 guide

4.Exhaust Ducting

The dryer’s exhaust air must be vented to the outdoors by the shortest route possible with the number of elbows kept to a minimum. The duct should be designed and installed by qualified technicians.

Improperly designed duct work may reduce the airflow through the dryer, causing improper and unsafe drying conditions. The static pressure of the air in the duct work must not exceed 1.25 inches water column (3.1 millibar). The dryer exhausts 11,600 cfm (328.5 cmm) of air during the drying cycle, 13,000 cfm (368.2 cmm) during cool down. Ducting must be sized for the 13,000 cfm (368.2 cmm) of airflow.

The exhaust vent connection is located on top of the burner and heater section of the dryer. It has a rectangle cross section and is flanged.

A sheet metal transition piece is supplied to connect a 24-inch (61 cm) diameter exhaust duct to the dryer’s exhaust vent connection. Care must be taken in locating this transition piece so that the tilting tumbler (basket) section does not hit the transition piece.

The duct work connecting the vent to the outdoors must be a minimum of 24-inches (61 cm) in diameter for a round duct or 625 square inches (4,032.25 square centimeters) for a rectangular duct (a 22-inch [56 cm] square duct would be sufficient).

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American Dryer Corp MLS-460 manual Exhaust Ducting

Contents

MLS-460 Installation/Operator’s Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Service Power MalfunctionsMotors Section Important Information Safety Precautions Explosion could ResultPage SPECIFICATIONS/DIMENSIONS Specifications Dimensions Installation Procedures Reassembly of DryerReattach The Control Pendant Arm Reassembly Instructions For Dryers Shipped In Three 3 Pieces Page Location Requirements Internal AIR, ELECTRICAL, and Water Connections Air Front Tilt Piston and Sprinkler LinesPage Temperature Probe, Base, and Tumbler Basket Disconnects Electric Tumbler Basket MotorsPage Pendant Tumbler Basket Junction Box Disconnect Left Drum Motor External Supply Connections Condensate return line must be 1-1/4 pipe Exhaust Ducting Page Electrical Requirements Electrical RequirementsLatest Edition Electrical Service Specifications MLS-460 SteamPage Fresh AIR Supply Requirements Steam Information Steam Requirements Shut Down Instructions PRE START-UP Preparation for Operation Routine Maintenance CleaningSuggested Cleaning Schedule Clean any lint accumulation from inside the heat console Monthly Component System Descriptions Tumbler Basket Support and Drive SystemPage Page Main AIR Blower and Heat Reclaimer System Heat Reclaimer Adjustment Remove Electricity from the Unit Compressed AIR System Page Safety Devices Door Open SERVICE/PARTS Information ServiceParts Warranty Information Returning Warranty CardsWarranty Returning Warranty PartsPage Troubleshooting Troubleshooting Table of Contents Number Power Malfunctions Verify red Sprinkler Power on main panel to be illuminatedMain Disconnect Will Not Turn On If NO, refer to paragraph #1 above Machine Main Power Shuts Down Blue Indicator Off Sprinkler circuit may be defective 3CR CRB Not Used Sprinkler Circuit Components Sprinkler Circuit Description Page Emergency Stop E-Stop Buttons 1, 2, Malfunctioning PLC Programmable Logic ControllerPage PLC Message HI-TEMP Fault General DescriptionPage Page Tumbler Basket Section Electrical Malfunctions Introduction Drum Rotation Sensor PRS1 Rear Panel Control Problems Emergency Stop E-Stop Function If YES, refer to a If NO, refer to b PLC OUT PIN 1 = Drum Reverse PLC OUT PIN 2 = Drum Forward PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UP Wiring Back the PLC Programmable Logic Controller DS1-B=LOAD Door Switch DS2-B=UNLOAD Door Switch Probable Solutions Base Section Electrical Malfunctions Lint Drawer Proximity Switches Wiring Back to the PLC Programmable Logic ControllerPage Probable Causes Pendant Control Malfunctions Load Level Unload Tumbler Reverse Tumbler ForwardSEL a = Load SEL B = Unload Tumbler Reverse Pendant --- PB2 Tumbler Forward Pendant --- PB1 Fuse 4 on Main Electrical Panel Faulty Switches Wiring Back to PLC Programmable Logic ControllerMLS-460 Pendant Assembly Diagram Wiring Diagram Temperature Sensing Disconnect Plug Faulty Switch Wiring Back to TB1Another Emergency Stop E-Stop Button Temperature Sensing Component Descriptions Exhaust RTD Resistive Temperature Device Sens1 With the control voltage OFF Circuit Wiring to the Analog Input Module Motors Verify current setting Check circuit Check motor Retest LS-460 Idling LS-460 Running ADC113073 1- 01/14/00-15