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American Dryer Corp. ADG-464 Installation & Operator's Manual

American dryer corporation adg-464 dryer installation/operator's manual
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Installation/Operator's Manual
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 death.
Do not store or use gasoline or other flammable
vapor and liquids in the vicinity of this or any
other appliance.
WHAT DO YOU DO IF YOU SMELL GAS
* Do not try to light any appliance.
* Do not touch any electrical switch; do not use
any phone in your building.
* Clear the room, building or area of all
occupants.
* Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
* If you cannot reach your gas supplier, call the
fire department.
Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
081199SL/cms
ADG-464
AVERTISSEMENT: Assurez-vous de bien
suivre les instructions données dans cette
notice pour réduire au minimum le risque
d'incendie ou d'explosion ou pour éviter tout
dommage matériel, toute blessure ou la mort.
Ne pas entreposer ni utiliser d'essence ni
d'autres vapeurs ou liquides inflammables dans
le voisinage de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR
DE GAZ:
* Ne pas tenter d'allumer d'appareil.
* Ne touchez à aucun interrupteur. Ne pas
* Évacuez la pièce, le bâtiment ou la zone.
* Appelez immédiatement votre fournisseur de
* Si vous ne pouvez rejoindre le fournisseur
L'installation et l'entretien doivent être assurés
par un installateur ou un service d'entretien
qualifié ou par le fournisseur de gaz.
For replacement parts, contact the reseller from which the dryer
American Dryer Corporation
Fall River MA 02720-4781
Telephone: (508) 678-9000 / Fax: (508) 678-9447
E-mail: techsupport@amdry.com
vous servir des téléphones se trouvant dans
le bâtiment où vous vous trouvez..
gaz depuis un voisin. Suivez les instructions
du fournisseur.
de gaz, appelez le service des incendies.
was purchased or
88 Currant Road
www.amdry.com
ADC Part No. 112193

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Summary of Contents for American Dryer Corp. ADG-464

  • Page 1 Installation and service must be performed by a qualified installer, service agency or the gas supplier. 081199SL/cms ADG-464 AVERTISSEMENT: Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum le risque d’incendie ou d’explosion ou pour éviter tout dommage matériel, toute blessure ou la mort.
  • Page 2 Important For your convenience, log the following information: “IMPORTANT NOTE TO PURCHASER” POUR VOTRE SÉCURITÉ Ne pas entreposer ni utiliser d’essence ni d’autres vapeurs ou liquides inflammables dans le voisinage de cet appareil ou de yout autre appareil. ADG-464...

  • Page 3: For Your Safety

    YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE STEAM SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) STANDARDS.
  • Page 4 The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY or FIRE COULD RESULT. DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER (SCREEN) IN PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED. PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/operator's manual included with the dryer.

  • Page 5: Table Of Contents

    Table of Contents SECTION I Important Information ... 3 A. Receiving and Handling ... 3 B. Safety Precaution ... 4 SECTION II Specifications/Dimensions ... 6 A. Specification ... 6 B. Dimensions ... 7 SECTION III Installation Procedures ... 8 A. Reassembly of Dryer... 8 B.
  • Page 6 SECTION VII Service and Parts Information ... 48 A. Service ... 48 B. Parts ... 48 SECTION VIII Warranty Information... 49 A. Returning Warranty Cards ... 49 B. Parts ... 49 C. Returning Warranty Parts ... 49 SECTION IX Troubleshooting ... 51 Troubleshooting TOC ...

  • Page 7: Section I

    IMPORTANT INFORMATION A. RECEIVING and HANDLING The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or optional box) as a means of preventing damage in transit. Upon delivery, the dryer and packaging, and wooden skid should be visually inspected for shipping damage.

  • Page 8: Safety Precaution

    B. 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.
  • Page 9 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust duct work, and inside the dryer. The frequency if inspection and cleaning can best be determined from experience at each location. WARNING: The collection of lint in the burner area and exhaust duct work can create a potential fire hazard.

  • Page 10: Specifications/Dimensions

    SPECIFICATIONS/DIMENSIONS A. SPECIFICATIONS AXIMUM APACITY OTAL EIGHT OTAL HIPPING EIGHT PERATING EIGHT EPTH PERATING EPTH IDTH REAR TILT NLOAD FRONT TILT NLOADING EIGHT FROM OADING EIGHT FROM PENING UMBLER BASKET UMBLER BASKET UMBLER BASKET INIMUM AXIMUM URNER NPUT LOWER OTOR UMBLER BASKET URNER...

  • Page 11: Dimensions

    B. DIMENSIONS NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.

  • Page 12: Installation Procedures

    INSTALLATION PROCEDURES Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, the installation must conform to applicable AMERICAN NATIONAL STANDARDS: National Fuel Gas Code ANSI.Z223.1-LATEST EDITION or National Electric Code ANSI/NFPA NO. 70- LATEST EDITION or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA- B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P.
  • Page 13 2. Reassembly Instructions For Dryers Shipped In Three (3) Pieces When the dryer is shipped in three pieces, the tumbler and the tumbler base sections are shipped as two (2) separate pieces. The heat console section is shipped as the third piece. a.
  • Page 14 c. Reassemble The Tumbler (Basket) Section To The Tumbler (Basket) Base Lift the tumbler (basket) section with a cable through the eye bolts on top of the section. Slowly lower the tumbler (basket) section over the tumbler base. The four (4) large slots located on the bottom of the tumbler (basket) section (one slot at each corner of the tumbler section) must be aligned with the tapped holes in the cylinder cleaves located at the top of the tumbler (basket) section.

  • Page 15: Location Requirement

    B. LOCATION REQUIREMENTS The model ADG-464 dryer requires 36-inches (91.44 cm) of space on each side of the dryer and 36-inches (91.44 cm) of space behind the unit for ease of maintenance and tilting. The dryer must be leveled for proper operation.

  • Page 16: Internal Air, Electrical And Water Connections

    C. INTERNAL AIR, ELECTRIC and WATER CONNECTIONS 1. Air a. Front Tilt Piston and Sprinkler lines This connection is made at the front of the dryer in the area between the lower heat console section and the tumbler (basket) base section. To connect the sprinkler air line insert the 1/4” aluminum tubing into the 1/4”...
  • Page 17 c. Load Door Piston Lines The load door cylinder pneumatic connections are made in the lower heat console section, in the area behind the pneumatic panel. To connect the 1/4” poly-flo tubing into the corresponding needle valves, match the number on the line with the number on the needle valve. Insert ALL of the tubing (two [2] on a 1-Door model, four [4] on a 2-Door model) into their corresponding valves.
  • Page 18 2. Electric a. Burner Switch and Air Switch These connections are made between the upper heat module and the lower heat module section. To connect the burner, there are three (3) wires that come from the ignition transformer through (2) holes on the bottom of the upper heat module.
  • Page 19 c. Tumbler (Basket) Motors The disconnects for the two (2) tumbler (basket) motors are located in the lower heat console. The right drum (tumbler/basket) motor disconnect is located in the lower heat console on the upper shelf towards the left. The left drum (tumbler/basket) motor disconnect is located in the base of the lower heat console to the right.
  • Page 20 e. Annunciator, Pendent, Over-Burner, and RTD (Resistive Temperature Device) Cable Remove the four (4) bolts that hold on the character (464) panel. Open the door to the main electrical enclosure, the female end of the RTD (Resistance Temperature Device) cable will be found there. Loosen the 1-inch lock nut and remove the modified hole seal.
  • Page 21 d. Pendent On the top of the heat console section of the dryer near the pendent, there is a junction box with four (4) cables coming out of it. Two (2) of the cables from the junction box have connectors on the end, a 5-pin connector and an 11-pin connector.
  • Page 22 f. Left Drum Motor There are two (2) different ways that the left drum motor is connected with or without the motor disconnect junction box. The junction box is used when the connections to the left motor are made on the back side of the motor, nearest to the tumbler (basket).

  • Page 23: External Supply Connections

    D. EXTERNAL SUPPLY CONNECTIONS 1. Optional Sprinkler Water Supply A 40 PSI (2.75 bar) supply of water must be connected into the 1” N.P.T. sprinkler connection located on the left side of the tumbler (basket) base on dryer models with a sprinkler system. 2.
  • Page 24 3. Gas Piping The gas connection to the dryer is made into the 2-inch F.P.T. shut-off valve located in the bottom front corner of the lower heat console. The gas pressure supplied to the dryer must be between 7-inches (17.41 m bar) and 13-inches (32.34 m bar) water column (W.C.) for natural gas or between 10.5-inches (26.12 m bar) water column (W.C.) for L.P.
  • Page 25 The duct work must be smooth on the inside with no projections from sheet metal screws or other obstructions which would collect lint. Inspection doors must be installed at strategic points in the duct work for periodic lint removal. Use smooth sweeping elbows instead of sharp 90º elbows. The radius of an elbow should be at least 1-1/2 times the duct diameter.

  • Page 26: Electrical Requirements

    E. ELECTRICAL REQUIREMENTS 1. Electrical Requirements It is your responsibility to have ALL electrical connections made by a properly licensed and competent electrician to assure that the electrical installation is adequate and conforms with local and state regulations or codes. In the absence of such codes, ALL electric connections, materials and workmanship must confirm to the applicable requirements of the National Electrical Code ANSI/NFPA NO.
  • Page 27 NOTE: For 4-wire service, cap the neutral. NOTE: Contact the factory for electrical information not listed. NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation. ADG-464 APPROX. MINIMUM AMP DRAW WIRE SIZE...
  • Page 28 ADG-464 dryer, this section is located at the bottom left of the main electrical enclosure. The ADG-464 dryer must be supplied with two (2) independent input power lines. One is 3-phase ( 3ø) electric service that feeds the dryer itself, and the other is 1ø electric service that feeds the safety sprinkler system.

  • Page 29: Fresh Air Supply Requirements

    F. FRESH AIR SUPPLY REQUIREMENTS When the dryer is operating, it draws in room air, heats this air through the tumbler (basket), and exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If makeup air is inadequate, drying time and efficiency will be adversely affected, and safety will be compromised.

  • Page 30: Pre Start-Up

    A. PREPARATION FOR OPERATION 1. The supply voltage must match the dryer voltage as stated on the aluminum dryer data label which is located on the inner right wall of the electrical cabinet. 2. A separate fused power supply must be connected into safety sprinkler circuit power connection. 3.

  • Page 31: 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 this cleaning can best be determined from experience at each location. Maximum operating efficiency is dependent upon proper air circulation.
  • Page 32 MONTHLY Grease the four (4) tumbler shaft pillow bearings with DC-44 (Dow Corning) grease or equivalent. DC-44 is a lithium grease that conforms to NLGI Grade 2 and has a temperature range of 40º F (4.4º C) to 400º F (204.4º...

  • Page 33: Component System Descriptions

    COMPONENT SYSTEM DESCRIPTIONS A. TUMBLER (BASKET) SUPPORT and DRIVE SYSTEM IMPORTANT: Always keep the tumbler (basket) section of the dryer in an upright position when moving it. 1. Tumbler (Basket) The tumbler is made of five (5)14-gauge stainless steel perforated panels, five (5) stainless steel lifting ribs, and two (2) outer tumbler rings.
  • Page 34 3. Tumbler and Basket Drive System There are two (2) 5 HP tumbler drive motors. Each motor drives one of the 2-inch diameter tumbler drive shafts, and the motors spin simultaneously so that all four (4) sets drive wheels work together to spin the tumbler (basket).
  • Page 35 1) Front Panel Electrical Connections: a) Front Position Switch Disconnect Plug; The front door position switch disconnect plug is located on the left side of the front doors. Disconnect this plug and feed the cable through the right hand side of the tumbler section. b) Intake Temperature Probe Disconnect Plug;...

  • Page 36: Main Air Blower And Heat Reclaimer System

    B. MAIN AIR BLOWER and HEAT RECLAIMER SYSTEM The fan which moves the exhaust air through the ADG-464 dryer is a 22-inch diameter, squirrel cage wheel that is driven at 1,100 rpm by a 25 HP motor. This fan moves a maximum of 13,000 cfm (368 cmm) air...
  • Page 37 The dryer is equipped with a pneumatically operated heat reclaimer damper, which when opened, will recirculate approximately fifteen percent (15%) of the dryer’s exhaust air. The heat reclaimer damper is closed until ignition of flame has been established. Then, the damper piston is actuated, opening the dampers recirculating fifteen percent (15%) of the exhaust air back over the gas burner and into the tumbler (basket).

  • Page 38: Compressed Air System

    C. COMPRESSED AIR SYSTEM The compressed air system of the ADG-464 dryer consists of a number of pneumatic pistons located throughout the dryer, an FRL (Filter/Regulator/Lubricator) assembly, and pneumatic control panel. 1. Air Pistons: The pistons are actuated by solenoid and flow control valves that are under computer control. The pneumatic pistons are used to: •...
  • Page 39 3. Pneumatic Control Panel The pneumatic control panel of a two-way tilt dryer has two (2) tilting solenoid valves, one to control the front set of tilting pistons and a second to control the rear set of tilting pistons. A 1-Way Tilt dryer has only one (1) tilting solenoid valve.
  • Page 40 4. Internal and External Pilot Air Supply On two-way tilt dryers, a pneumatic safety circuit is incorporated to prevent both front and rear tilting pistons from extending their rods at the same time. When 120 volts is supplied to the “S5” side of the front tilting piston solenoid valve coil, the round internal spool in the core of the solenoid will move, allowing 80 PSI (5.51 bar) air to flow into the bottom ports of the front tilting pistons, while the top ports of these pistons are bled to the atmosphere.

  • Page 41: Gas Burner And Ignition System

    D. GAS BURNER and IGNITION SYSTEM The ADG-464 dryer gas burner system operates an on/off gas rate sequences to accurately control the tumbler’s (basket’s) drying temperature. Maximum firing rate is 2,800,000 Btu/hr (705,588 kcal/hr). Upon a call from heat, the dryer computer sends a 120 volt signal to the burner controller module (BCM) which initiates and controls the ignition sequences.
  • Page 42 1. Major Burner Components a. Burner Controller Module (BCM) The BCM (burner controller module) provides effective burner flame safeguard control through adjust able purge and trial-for-ignition timing. The BCM insures that ALL dryer safety switch circuits are closed, delays ignition to allow the combustion chamber to vent, and insures that a healthy pilot flame is established before opening the main gas valves.
  • Page 43 2) L.E.D. (light emitting diode) and Neon Displays of the BCM (Burner Controller Module) a) Operating Interlock - L.E.D. (light emitting diode) is lit when: ALL safety interlock switches are closed applying a 120 VAC signal to terminal #7 of the burner controller module (BCM).
  • Page 44 h) Burner Fan Air Switch Status Indicator - Neon is not lit; • Air switch is not closed after start-up of burner fan. • Door interlocks are open. • Combustion burner screen is clogged. • A door on the dryer is open. i) Test and Reset Button When this button is pushed in, the burner controller module (BCM) will halt the ignition sequence, once the pilot flame is established.
  • Page 45 a) Burner Fan Air Switch The differential in air pressure is measured by the burner fan air switch, which is located next to the burner fan motor. If the combustion air is inadequate, this switch will prevent ignition. The setting of this switch is adjustable, and it should be set at 12 to 15 millimeters (.4 - .6 inches water column [W.C.]) - .995 - 1.49 mbar.
  • Page 46 d) Combustion Air Damper To produce the required combustion airflow, this damper can be adjusted. Remove the screen to get access to the damper. Moving the damper closer to the blower inlet opening will reduce the combustion airflow, and moving it away from the blower inlet opening will increase the airflow. To measure the combustion airflow, attached a manometer to the air pressure tap on the burner b o x .
  • Page 47 Top Motorized Gas Valve The valve sets the gas rate of 2,800,000 btu/hr (705,588 kcal/hr). To achieve this rate, the has pressure must be set for 2.5-inches water column (W.C.) - 6.22 mbar - for natural gas and 1.25 inch water column (W.C.) - .3.1 mbars - for L.P. (liquid propane) gas. To adjust. loosen the pan head screw located on the front of the top motorized valve, while holding the valve body, turn the flow adjustment clockwise (CW) for less gas and counterclockwise (CCW) for more gas.
  • Page 48 If ALL safety switches are closed, the burner controller module (BCM) will start the burner fan motor (BCM terminal #8). The BCM (burner controller module) waits 10-seconds to allow the blower motor to get up to speed, and then checks that the burner fan combustion air switch (BCM terminal #6) circuit is closed.
  • Page 49 Once the flame probe signal is detected by the burner controller module (BCM), it waits 5-seconds to allow the pilot to stabilize and then opens the main motorized gas valves (BCM terminal #5) in sequence. The lower valve opens first. Upon full opening, its’ internal switch closes, enabling the second motorized valve to open and full flame to be achieved.

  • Page 50: Safety Devices

    E. SAFETY DEVICES The ADG-464 dryer is equipped with numerous safety devices to ensure the dryer operates safely. The chart on the following page ( page 47) lists each device with its location, function, computer display message, and result of tripping.
  • Page 51 Safety Devices Location Left side of Load Door Switch Load door Unload Door Switch Right side of (2-Door Dryers Only) unload door Top left side Tilting Switches of base module Left side of Drum Rotation Sensor tumbler section Lint Chamber Air Center of Pressure Switch heat console...

  • Page 52: Service And Parts Information

    SERVICE/PARTS INFORMATION A. SERVICE 1. Service must be performed by a qualified trained technician, service agency, or gas supplier. If service is required, contact the reseller from whom the ADC equipment was purchased. If the reseller cannot be contacted or is unknown, contact the ADC Service Department for a reseller in your area. NOTE: When contacting the ADC Service Department, be sure to give them the correct model number and serial number so that your inquiry is handled in an expeditious manner.

  • Page 53: Warranty Information

    WARRANTY INFORMATION A. RETURNING WARRANTY CARDS 1. Before any dryer leaves the ADC factory test area, a warranty card is placed on the back side of the main door glass. These warranty cards are intended to serve the customer where we record the individual installation date and warranty information to better serve you should you file a warranty claim.
  • Page 54 2. Each part must be tagged with the following information: a. Model number and serial number of the dryer from which part was removed. b. Nature of failure (be specific). c. Date of dryer installation. d. Date of part failure. e.

  • Page 55: Troubleshooting

    DISPLAYED ON THE DRYER or SPECIFIED IN THIS MANUAL. The following information assumes that the reader has familiarized himself with the introduction to this manual, understands the ADG-464 dryer operation, and has knowledge of the programming features of the dryer. TROUBLESHOOTING TABLE OF CONTENTS A.
  • Page 56 A. POWER MALFUNCTIONS 1. Main Disconnect Will Not Turn On a. PROBABLE CAUSES; 1a) Sprinkler isolated power source “OFF” or disabled. 2a) OL12 tripped or sprinkler circuit defective. 3a) Sprinkler activated. 4a) Sprinkler will not reset. b. POSSIBLE SOLUTIONS; 1b) Verify “RED” “Sprinkler Power” on main panel to be illuminated. •...
  • Page 57 • If line voltage is not present check fused disconnect and retest. 2b) Attempt to turn the ADG-464 main power handle to the “ON” position. • If the switch does not engage, verify that sprinkler power is “ON” (“RED” light on main door).
  • Page 58 3. Machine Main Power Shuts Down (“BLUE” Indicator Off) a. PROBABLE CAUSES; 1a) Sprinkler activated. 2a) OL12 (overload #12) tripped. 3a) “UNDER VOLTAGE FEATURE” of main disconnect has tripped. 4a) Sprinkler circuit defective. b. POSSIBLE SOLUTIONS; 1b) Check if the sprinkler is activated, is “SPRINKLER RESET” button lit? Is the sprinkler alarm horn “ON”? Does the sprinkler water valve have its “ON”...
  • Page 59 The following information will first describe the sprinkler circuit components and then provide a circuit descrip- tion. Please refer to the ADG-464 ladder diagram (which is supplied with the machine) as the following is described. • OL12 (overload #12) is a 1.6-amp magnetic and thermal overload device set 1-amp. Its function is to protect and the line voltage of the sprinkler circuit.
  • Page 60 • UV is the “UNDER VOLTAGE” detection coil of the ADG-464 MAIN DISCONNECT switch, DISC #1. It is this device that controls the automatic POWER DOWN of the dryer when the sprinkler is activated.
  • Page 61 • SHLC alarm relay will toggle, causing the alarm contact to close and activate 2CR’s (control relay’s) coil. This action will; • Open 2CR “B” causing UV, the “under voltage” trip feature of the ADG-464’s main disconnect to shut down the “MAIN POWER” to the dryer.
  • Page 62 4. Front Panel “BLUE” Light and “RED” Light “ON” ADG-464 “ON” button does respond ... a. PROBABLE CAUSES; 1a) EMERGENCY STOP BUTTONS 1, 2, and 3. b. POSSIBLE SOLUTIONS; 1b) Verify that ALL EMERGENCY STOP buttons are pushed in. • EMERGENCY STOP 1 - main enclosed door •...
  • Page 63 3a) Malfunctioning operator interface terminal or communications cable. 4a) Malfunctioning 24 volt DC power supply. 5a) Malfunctioning hi-limit temperature controller. b. POSSIBLE SOLUTIONS; 1b) Verify that fuses 7, 8, 9, and 10 are good. Check that ALL fuse holder L.E.D. (light emitting diode) indicators are not lit. •...
  • Page 64 • If their corresponding L.E.D.’s (light emitting diodes) do not cycle, check their respective: • temperature sensors (RTD’s [Resistive Temperature Device]) • power connections • electrical circuits (refer to the ADG-464 main electrical wiring diagram) • If the previous items are “OK,” replace the hi-limit controller.
  • Page 65 Introduction The heart of the ADG-464’s burner control section is a burner controller module. It is located on the upper right hand side of the Main Electrical Enclosure panel and is described in detail in Section VI, Part D, Gas Burner and Ignition System on page 37 thru page 45).
  • Page 66 • BURNER DOOR SWITCHES DS4B-DS5B (Interlock 2) These switches are located on the burner doors, and are utilized to verify that they are closed. Their signals are terminated in the Solenoid Junction Box and then fed to the Main Electrical Enclosure. •...
  • Page 67 • STOP DETECTOR RELAY CONTACT SMD NO This relay contact is used as an interlock to shut down the burner in the event that the tumbler (basket) has stopped for more than 12-seconds during a drying cycle. This contact resides in the Stop Motion Detector Module, located in the left side of the tumbler (basket) section just above the drive system.
  • Page 68 If the Gas fault message continues to be displayed, perform the following electrical check out. Refer to the ADG-464 ladder diagram for the following directions: 2b) Verify that PLC (Programmable Logic Controller) OUTPUT L.E.D. #4 IS “ON.” This will indicate that the PLC is calling for “HEAT.”...
  • Page 69 4b) To check “Interlock 2” (Heater Doors), verify that there is a 110 VAC signal on TB-41, on the Main Electrical Panel, when PLC (Programmable Logic Controller) output #4 is on. NOTE: The heater door interlock switches are double-pole double-throw (DPDT). These switches affect different circuits.
  • Page 70 2a) Burner fan air pressure switch. 3a) Pilot gas valve. 4a) Ignition transformer. 5a) Motorized gas valves. 6a) MS4 AUX. 7a) MS8. 8a) Flame detector and burner chassis ground. 9a) Burner controller. b) POSSIBLE SOLUTIONS; 1b) Verify that the burner controller module has power. With control voltage “ON,” verify that the burnt fuse L.E.D.
  • Page 71 • Open the disconnect block on TB1-63, for circuit testing. With control voltage “ON”, apply a 100 VAC line to TB1-63. THE PILOT GAS VALVE SOLENOID SHOULD ACTIVATE. • If the solenoid does not cycle check circuitry; ADG-464 Main Wiring Diagram, and ADG-464 Solenoid Junction Box Wiring Diagram.
  • Page 72 • If arcing does not occur: • Check circuitry; refer to ADG-464 Main Panel Wiring Diagram and AD-464 Solenoid Junction Box Wiring Diagram. • Check transformer • Check spark igniter in burner • Refer to the AD-464 Service Manual (ADC Part No. 450186) for more information on the burner controller module and burner start-up.
  • Page 73 7b) To verify burner fan motor contactor (MS8) operation: Apply a 110 VAC voltage to MS8’s terminals A1 and A2 and verify that the contactor activates. • If MS8 cycles this will indicate that its OK. Verify wiring to the device using the ADG-464 Main Panel Wiring Diagram.
  • Page 74 “OFF”. Open disconnects on TB1-20 and TB1-21, and check resistance across the outputs of these two (2) connectors. (Refer to ADG-464 Main Panel Wiring Diagram). This will verify that the switch is open when the dryer is “OFF”. Check the lint chamber switch during a “DRYING CYCLE”...
  • Page 75 b) POSSIBLE SOLUTIONS; 1b) For Air Flow problems refer to SECTION III - Item D (External Supply Connections) - paragraph #4 (Exhaust Air Ducting) on page 20 and page 21. NOTE: An illuminated “RED” L.E.D. (light emitting diode) indicator on the HI-TEMP CONTROLLER indicates that the Hi-Limit control relays is in “ALARM”...
  • Page 76 • If 0 ohms (0 ) is measured; • Check RTD (Resistive Temperature Device) • Check wiring to the RTD (refer to the main panel wiring diagram) • Check wiring to the HI-LIMIT temperature controller (refer to the AD-464 Main Panel Wiring Diagram).
  • Page 77 • If the de-energizing time is incorrect: • Adjust the “time adjust” on the stop motion detector module and retest. If the input #0, 10 on the PLC (Programmable Logic Controller) is not on after several rotations of the tumbler (basket): •...
  • Page 78 C. TUMBLER (Basket) SECTION ELECTRICAL MALFUNCTIONS Introduction There are a number of electrical components associated with the AD-464 tumbler (basket) section. These components are ALL interfaced to the tumbler junction box, and connected to the main electrical enclosure through a dis-connectable cable. The “tumbler junction box”...
  • Page 79 d) Tumbler Junction Box This enclosure interfaces the tumbler’s electrical hardware, to the AD-464 Main Electrical Panel. The disconnect plug, attached to this enclosure, provides a means of electrical separation of these tumbler (basket) section, for shipping. Refer to AD-464 Tumbler Junction Box Diagram for detailed wiring information. The following is for 2-Door Models ONLY e) Unload 1 “Rear Panel”...
  • Page 80 b) POSSIBLE SOLUTIONS; 1a) If the EMERGENCY STOP (E-Stop) - rear - does not respond: • Verify that ALL other EMERGENCY STOP (E-Stop) buttons are pulled out. • Verify that the rear panel’s disconnect plug is indeed connected. The disconnect plug is to allow the removal of the rear panel for drying servicing.
  • Page 81 b) POSSIBLE SOLUTIONS; 1b) If either the Drum forward or reverse functions (rear) don’t respond: • Verify that the rear panel controls disconnect plug is indeed connected. This disconnect plug allows for the removal of the rear control panel for dryer servicing. 2b) Defective Forward and Reverse Switch •...
  • Page 82 4. 0 UNLOAD 1 Selection a) PROBABLE CAUSES; 1a) Rear Panel Disconnect Plug. 2a) Defective Switch. 3a) Wiring Back to Main Electrical Enclosure. b) POSSIBLE SOLUTIONS; 1b) If the O UNLOAD 1 Switch does not respond when selected: • Verify that the rear panel controls disconnect plug is indeed connected. This disconnect plug allows for the removal of the rear control panel for drying servicing.
  • Page 83 5b) Input 19 L.E.D. (light emitting diode) is not illuminating correctly on the PLC (Programmable Logic Controller) indicates that the signal to the PLC input is missing or the PLC is defective. • Check FUSE 2 on the main electrical panel •...
  • Page 84 • If yes, wiring is OK: • Check switch placement and door actuation. • If no, check associated: • Switch and wiring • Check wiring back to the tumbler junction box • Check wiring back to the Rear Controls • Check PLC (Programmable Logic Controller) Refer to wiring diagrams: •...
  • Page 85 • The Proximity Sensor is located in the same area as the Tumbler Junction Box • Inductive Proximity Mechanical Adjustment • The target that is attached to the outside of the tumbler (basket). • Stop motion detector module. • Circuit wiring; refer to the AD-464 Main Panel Wiring Diagram, AD-464 Tumbler Junction Box Wiring Diagram 2b) If the L.E.D.
  • Page 86 D. BASE SECTION ELECTRICAL MALFUNCTIONS Introduction There are four (4) electrical components associated with the AD-464 base section. These components are interfaced to a junction box, and connect to the main electrical enclosure through a disconnect cable. The “Base Junction Box” is located on the right rear of the base section, and title of its wiring diagram is “AD-464 Base Electrical Junction Box Wiring Diagram.”...
  • Page 87 4. Lint Chamber Pressure Switch - PS3 The “Lint Chamber Pressure Sensing Switch” is located on the left rear side of the AD-464 base. It is an Adjustable pressure switch, which incorporate a single-pole-single-throw (SPST) switch. PS3’s electrical function is to close its switch when the “present pressure” in the lint chamber is sufficient. This switch is wired in series with other switches to form an interlock to the Burner Control Module (BCM).
  • Page 88 • If no, check associated: • Switch and Wiring • Check wiring back to the Base Electrical Junction Box • Check PLC (Programmable Logic Controller) • Refer to Wiring Diagrams: • Main Electrical Panel Diagram • Base Electrical Junction Box Wiring Diagram. •Retest;...
  • Page 89 6. Lint Screen Mechanism Problem “SCREEN FAULT” A “SCREEN FAULT” message is generated by the incorrect state of the lint screen mechanism sensor switch. The following information will address the correct signal, since it is associated with the Base Electrical Junction Box.
  • Page 90 7. Lint Chamber Air Pressure Problem “AIR FAULT” An “AIR FAULT” message is generated by the LINT CHAMBER PRESSURE switch. The following information will address the signal, since it is associated with the Base Electrical Junction Box. a) PROBABLE CAUSES; 1a) Clogged Lint Screen or Lint Bag 2a) Air Pressure Setting 3a) Air Pressure Switch - PS3 or wiring back to the PLC (Programmable Logic Controller)
  • Page 91 E. PENDANT CONTROL MALFUNCTIONS Introduction There are four (4) electrical switches associated with the AD-464 Pendant assembly. These components are interfaced to TB1 of Main Electrical Enclosure through two (2) disconnects and two (2) junction boxes. The Pendant Assembly is remote control for Loading or Unloading the AD-464. The functions provided are: •...
  • Page 92 • TUMBLER (Basket) FORWARD “PENDANT” - PB1 This push button comprises of one normally open switch, and is mechanically interlocked with the Tumbler (Basket) Reverse Push button. • EMERGENCY STOP ((E-Stop) “PENDANT” - PB6 This push button switch is normally open device and its function is to shut down the control voltage to the dryer in the event it is pressed.
  • Page 93 • Releases the REVERSE Push-button. • Does PLC (Programmable Logic Controller) input L.E.D. (light emitting diode) #18 go “OFF”? • If the answers to these question are “YES”, wiring to the PLC (Programmable Logic Controller) is correct. If any answer to these questions is “NO”, refer to Probable Causes paragraph below •...
  • Page 94 3. EMERGENCY STOP (E-Stop) SWITCH - PB6 If the EMERGENCY STOP (E-Stop) - pendant - does not respond: a) PROBABLE CAUSES; 1a) Another EMERGENCY STOP (E-Stop) Button 2a) A Disconnect Plug 3a) Faulty Switch 4a) Wiring Back To TB1 b) POSSIBLE SOLUTIONS; 1b) Verify that ALL other EMERGENCY STOP (E-Stop) buttons are pushed in, and Retest.
  • Page 95 The following information will provide a means to respond to “Temperature Sensing” malfunctions, and verify ALL its electrical signals. Refer to the following diagrams for detail placement and wiring information. • AD-464 ANNUCIATOR, PENDANT, and UPPER RTD’S (Resistance Temperature Device) WIRING DIAGRAM •...
  • Page 96 • Temperature Measurement and Sensing Problems An “EXHAUST DSFL” MESSAGE is displayed on the operator terminal any time a respective temperature measurement has exceeded the programmed temperature in the PLC (Programmable Logic Controller). A “DSFL” message will stop the current drying cycle and prevent a drying cycle from starting. 2.
  • Page 97 • If the power supply responds to the disconnection, there is a problem with the driven load and not the power supply itself. • Check ALL loads and retest. Check that the device’s output voltage is 24 volts DC. • If not, adjust it. 3.
  • Page 98 • Motor Protection Device Descriptions The motor protection devices in the AD-464 incorporate a manual disconnect switch, thermal overload relay, and instantaneous trip mechanism in one compact device. A two (2) position, normally open, a u x i l i a r y c o n t a c t b l o c k h a s b e e n a t t a c h e d t o ALL motor protection devices to provide the “MOTOR FAULT”...
  • Page 99 H. PLC (Programmable Logic Controller) ERROR MESSAGES The AD-464 diagnostics messages have been provides to aid troubleshooters in diagnosing and repairing dryer problems. The message are intended to direct one to a particular fault area for further testing; not to diagnose the machine for you.
  • Page 100 ADC 112193 1- 01/11/96-25 4* 08/25/99-25 2* 10/18/96-25 3* 01/07/97-50 5* 12/30/99-25 6* 08/09/01-25...

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