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ML-82
Service Manual
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
Telephone: (508) 678-9000 / Fax: (508) 678-9447
e-mail: techsupport@amdry.com
082499MFM/tcosta ADC Part No. 450404
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Retain This Manual In A Safe Place For Future Reference American Dryer Corporation products embody advanced concepts in engineering, design, and safety. If this product is properly maintained, it will provide many years of safe, efficient, and trouble-free operation. ONLY qualified technicians should service this equipment. OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/operator’s manual included with the dryer. The following “FOR YOUR SAFETY” caution
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IMPORTANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY or THE STEAM SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING , ADJUST- ING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) STANDARDS. «Attention: Lor des opérations d’entretien des commandes étiqueter tous fils avant “Caution: Label all wires prior to de les déconnecter. Toute erreur de disconnection when servicing c
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WARNING The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY or FIRE COULD RESULT. WARNING DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER (SCREEN) IN PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED. IMPORTANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/operator's manual included with the dryer. Dryers must not be installed or stored in an area where it will be ex
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Table of Contents SECTION I IMPORTANT INFORMATION ........................................................................................................ 3 A. Safety Precautions................................................................................................................................... 3 SECTION II SPECIFICATIONS/COMPONENT IDENTIFICATION................................................................. 5 A. Specifications ....................................................
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SECTION VI PHASE 6 OPL SYSTEM DIAGNOSTICS ...................................................................................... 34 A. Diagnostic (L.E.D. Display) Failure Codes ........................................................................................... 34 B. L.E.D. (Light Emitting Diode) Display Indicators ................................................................................. 36 C. Phase 6 OPL Microprocessor Controller Relay Output L.E.D. Indicators ...................
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SECTION I IMPORTANT INFORMATION A. SAFETY PRECAUTIONS WARNING: For your safety, the information in this manual must be followed to minimize the risk of fire or explosion or to prevent property damage, personal injury, or loss of life. WARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY or FIRE COULD RESULT. 1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other applianc
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WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will create a fire hazard. WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or similarly textured rubber materials. Drying in a heated basket (tumbler) may damage plastics or rubber and also may be a fire hazard. 7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust duct work, and inside the dryer. The frequency of inspection a
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SECTION II SPECIFICATIONS/COMPONENT IDENTIFICATION A. SPECIFICATIONS BASKET (TUMBLER) DIAMETER 37" 94 cm BASKET (TUMBLER) DEPTH 36" 91.5 cm BASKET (TUMBLER) MOTOR 1/2 HP .373 kw BLOWER MOTOR 3 HP 2.238 kw DOOR OPENING (DIAMETER) 21-1/2" 54.61 cm BASKET (TUMBLER) VOLUME 22.4 cu. ft. .634 cu.m. DRYERS PER 20'/40' CONTAINER 10/20 DRYERS PER 6m/12m CONTAINER 10/20 DRYERS PER 45'/48' TRUCK 24/24 DRYERS PER 14m/15m TRUCK 24/24 VOLTAGE AVAILABLE 208-460v 3ø 50/60 Hz APPROX. WEIGHT (UNCRATED) 828 lbs.
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Specifications MLG-82 (Gas) MLS-82 (Steam) NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation. 6
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B. COMPONENT IDENTIFICATION 1. Dryer Front View Illus. No. Description 1 Controls 2 Control (top access) Door Assembly 3 Main Door Assembly 4 Lint Compartment Area (lint screen located behind door) 5 Lint Drawer 6 Data Label and Installation Label (located behind control [service] door) 7
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2. Dryer Rear View Illus. No. Description 1 Heating Unit 2 1/8" Compressed Air Supply Inlet (behind Electric Service Relay Box for Steam Models Only) 3* Electric Service Relay Box 4 Tumbler Bearing Mount Assembly 5 Idler Bearing Mount Assembly 6 Basket (Drive) Motor Assembly (for Reversing Models Only) 7 Blower Motor Assembly 8 Dryer Exhaust * Electric service connections for Gas Models and Steam Models are made in this box. 8
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SECTION III ROUTINE MAINTENANCE A. CLEANING A program or schedule should be established for periodic inspection, cleaning, and removal of lint from various areas of the dryer, as well as throughout the duct work system. The frequency of cleaning can best be determined from experience at each location. Maximum operating efficiency is dependent upon proper air circulation. The accumulation of lint can restrict this airflow. If the guidelines in this section are met, an ADC dryer will provide
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90 DAYS 1. Remove lint from around basket (tumbler), drive motors, and surrounding areas. 2. Remove lint from gas valve burner area with a dusting brush or vacuum cleaner attachment. 3. Clean any lint accumulation in and around both the blower and drive motor casing openings. NOTE: To prevent damage, avoid cleaning or touching the hot surface ignitor assembly. EVERY 6 MONTHS Inspect and remove lint accumulation in customer furnished exhaust duct work system and from dryers internal exhaust ducti
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SECTION IV DESCRIPTION OF PARTS A. CONTROL PANEL ASSEMBLY The control panel assemble is made up of a keypad to enter your selections, and a Phase 6 main computer board. The computer controls all input and output functions of the machine. B. DOOR SWITCH ASSEMBLY The main door switch assembly is a safety device used to stop the tumbler in case the main door is opened during a cycle. C. LINT DRAWER AND LINT DRAWER SWITCH The lint door/drawer is located in the bottom front of the machine. It
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D. THE BASKET AND SUPPORT ASSEMBLY The basket and support assembly is designed for 80 lbs. (36 km) of dry material. It is supported by a shaft and two (2) bearings. E. TEMPERATURE SENSOR BRACKET ASSEMBLY This bracket assembly is equipped with two (2) important devices. One is the temperature probe and the other is the 225º F (107º C) basket hi-limit. The temperature probe senses the temperature in the basket and sends a signal to the computer to read that temperature. This sensor
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G. IDLER ARM ASSEMBLY The idler arm/pulley has the purpose of taking the speed of the motor and reducing it. Adding tourque to the 18” (46 cm) basket pulley is also the function of the idler arm/pulley. H. BLOWER MOTOR The blower/fan motor has only one purpose in the dryer. It produces the airflow (cfm) throughout the machine. I. DRIVE/FAN MOUNT ASSEMBLY The drive motor is used to turn the basket in the forward and reverse motion. The fan mount assembly is used to increase the speed of the
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J. HSI (HOT SURFACE IGNITION) BURNER BOX ASSEMBLY The HSI (Hot Surface Ignition) burner box assembly consists of a number of very important parts for the dryer. A gas valve, hot surface ignitor, hot surface module, flame sensor, sail switch, burner hi-limit. These parts are for the “heat” of the dryer. K. SAIL SWITCH ASSEMBLY The sail switch assembly is used on gas and electric heated machines. It is an airflow switch, the damper pulls in due to the air suction on the burner; making the
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M. REVERSING RELAY PANEL This panel is located in the back of the machine at the upper left hand corner. On this panel is an arc suppressor (A.S.) board which filters out “noise” that might go to the coils of the contactors. Also mounted on this panel are the drive and blower/fan contactors. The two (2) fuses mounted on the panel are protecting the L1 and L3 voltage. The transformer is stepping down the incoming voltage to 24 VAC to supply the voltage to the computer and controls. 15
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SECTION V SERVICING INTRODUCTION ALL electrical and mechanical service or repairs should be made with the electrical power to the dryer disconnected (power off). WARNING: PERSONAL INJURY COULD RESULT. The information provided in this section should not be misconstrued as a device for use by an untrained person making repairs. Service work should be performed by competent technicians in accordance with local, state, and federal codes. When contacting the factory for assistance, always have the
