Instruction/ maintenance manual of the product AD-464 American Dryer Corp.
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AD-464 / ML-460 Phase 7 Ser vice Manual 031504SCOST A/gbennett ADC Part No. 450260 American Dryer Corporation 88 Currant Road Fall River , MA 02720-4781 T elephone: (508) 678-9000 / Fax: (508) 678-9447 E-mail: techsupport@amdry .
R etain T his Man ual In A Saf e Place F or Futur e R ef er ence 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.
Impor tant Y ou 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, adjusting, installation, or testing of any equipment per OSHA (Occupational Safety and Health Administration) standards.
2 American Dryer Corp. 450260-1 R efe r ence Guide (Front).
450260-1 www .amdry .com 3 R efe r ence Guide (Left Side).
4 American Dryer Corp. 450260-1 R efe r ence Guide (Right Side).
450260-1 www .amdry .com 5 R efe r ence Guide (Right Side).
6 American Dryer Corp. 450260-1 S AFETY P RECA UTIONS __________ 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. The dryer must never be operated with any of the back guards, outer tops, or service panels removed.
450260-1 www .amdry .com 7 R OUTINE M AINTENANCE _________ Cleaning ______________________________ A schedule should be established for periodic inspection, cleaning, and removal of lint from various areas of the dryer , as well as throughout the ductwork system.
8 American Dryer Corp. 450260-1 I NST ALLA TION R EQUIREMENTS ____ 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 S tandards: ANSI Z223.
450260-1 www .amdry .com 9 C OMPONENT D ESCRIPTION / R EPLACEMENT _________________ Gas Bur ner and Ignition System ____ The dryer's gas burner system operates on an On or Off gas rate sequences to accurately control the tumblers (basket's) drying temperature.
10 American Dryer Corp. 450260-1 Light Emitting Diode (L.E.D.) and Neon Displays of the BCM (Bur ner Contr oller Module) Operating Interlock - L.E.D. is lit when: All safety interlock switches are closed, applying a 1 10 V AC signal to terminal #7 of the burner controller module (BCM).
450260-1 www .amdry .com 11 Bur ner 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 approximately 0.
12 American Dryer Corp. 450260-1 Sequence of Operation With dryer power on, a 120 volt signal is sent to terminal #1 and terminal #2 of the burner controller module (BCM). A power indicator light has been added to the controller base for troubleshooting.
450260-1 www .amdry .com 13 Bur ner Air Switch The dryer uses a burner air switch on its burner components. The differential air pressure is measured by this air switch, which is located next to the burner fan motor . If the combustion air is inadequate, this switch will prevent ignition.
14 American Dryer Corp. 450260-1 Burner Fan Motor Burner Fan Motor Replacement 1. Discontinue electrical service to the dryer . 2. Remove the four (4) #8-18 x 7/16" TEK screws which secure the inlet ring to the combustion air blower housing. 3. Remove the two (2) 1/2-20 left hand jam nuts as well as the 1/2-inch flat washer .
450260-1 www .amdry .com 15 Heat Mode Air Flow During a call for heat, solenoid S10 turns on and air first enters the dryer on the bottom right side of the dryer . The air then passes through the open inlet air damper , then passes through the six (6) steam coils to heat the air .
16 American Dryer Corp. 450260-1 H EAT R ECL AI M ER S ETT I NG S Z = 1-5/8 Y+ Z =X Y % HR In ches R e clai me d 1- 1/8" 1/2" 7.46 1- 1/4" 2-5/ 8" 1" 15. 67 2- 5/8" 3- 1/8" 1-1 /2" 25.37 4- 1/4" 3- 5/8" 2" 34.
450260-1 www .amdry .com 17 Tilting System Description __________ The tilting system in the dryer , whether it is 1-way tilt or 2-way tilt, is controlled by the programmable logic controller (PLC). The PLC will determine if the dryer is safe to tilt based on inputs from several sources.
18 American Dryer Corp. 450260-1 Tilting System Component Replacement Caution Never service pneumatic components with compressed air connected. Serious injury may result. Tilting Solenoid Replacement 1. Engage EMERGENCY S T OP (E-S top). Discontinue electrical power to the dryer .
450260-1 www .amdry .com 19 Tilting Piston Replacement 1. Disconnect compressed air supply from the dryer . 2 . Tilt, then level the dryer to exhaust as much air as possible. 3. Disengage EMERGENCY STOP (E-S top). Discontinue electrical power to the dryer .
20 American Dryer Corp. 450260-1 ! Tilt Switch Adjustment Discontinue electrical service to the dryer . Remove the base panel from the left hand side of the dryer . Caution Do not place hands between the dryer base and the tumbler (basket) section.
450260-1 www .amdry .com 21 Blow er (Squir r el Ca ge F an) Motor Assembly _____________________________ Blo wer (Squir r el Ca ge Fan) Motor Description The dryer uses a 22-1/4 inch diameter blower (squirrel cage fan). It rotates (spins) in a counterclockwise (CCW) direction, when viewed at the blower motor .
22 American Dryer Corp. 450260-1 19. Tighten (hand tight only) the bolts for the new motor to the motor base. Leave enough movement for V -belt adjustment. 2 0 . Replace the V-belt s. Adjust to proper tension by adjusting the position of the new blower motor .
450260-1 www .amdry .com 23 Blower (Squir rel Cage F an) Electrical Components _________________________ Blo wer (Squir r el Cag e Fan) Contr ols and Overloads T hermal Magnetic Star ter (TMS) Descrip.
24 American Dryer Corp. 450260-1 Filter Maintenance T o remove filter element: twist the filter bowl 1/8 turn clockwise (CW). Then pull the bowl down to expose the filter element. T o remove the filter element, unscrew the baffle (this will allow element removal).
450260-1 www .amdry .com 25 Compressed Air System _____________ The compressed air system of the dryer consists of a number of pneumatic pistons located throughout the dryer , a regulator , and pneumatic control panel. Air Pistons The pistons are actuated by solenoid and flow control valves that are under computer control.
26 American Dryer Corp. 450260-1 Solenoid V alv e V alve Replacement 1. Discontinue air supply to the dryer . 2. Discontinue electrical service to the dryer . 3. Loosen coil plug screw and remove the plug. 4. Carefully remove the two (2) valve mounting screws.
450260-1 www .amdry .com 27 Notes For proper cable (wire rope) routing, starting at the piston; A . Replace the cable (wire rope) thimble and wire rope clamp to one side of the cable. B . Secure the cable (wire rope) to the piston mount with the 3/8-16 x 1" bolt, 3/8" fender washer , 3/8" lock washer , and 3/8-16 hex nut.
28 American Dryer Corp. 450260-1 Load Door Open/Closed Switch Replacement 1. Discontinue electrical service to the dryer . 2 . Loosen and remove the two (2) screws securing the mounting bracket 3. Remove the switch from the mounting bracket. 4. Depress the tabs on the 2 PIN connector and pull apart from the harness.
450260-1 www .amdry .com 29 Control And Electrical System ______ Ladder Diagram.
30 American Dryer Corp. 450260-1.
450260-1 www .amdry .com 31 Caution When servicing the high voltage (H V) section of the dryer , the electrical power must be disabled. The Emergency Stop (E-Stop) button does not disable the high voltage to the dryer.
32 American Dryer Corp. 450260-1 Phase 7 Microprocessor Controller (Computer) The temperature sensor probe is a bullet shaped device that is located in the exhaust duct by the heat reclaimer . This temperature sensor probe is used to sense the temperature in the exhaust of the dryer .
450260-1 www .amdry .com 33 ! Programmable Logic Controller (PLC) Replacement 1. Discontinue electrical power to the dryer . 2. Mark and identify the wires that will be removed for proper reinstallation.
34 American Dryer Corp. 450260-1 End of Cycle Light Bulb Replacement 1. Discontinue electrical power to the dryer . 2. T wist lock ring counter clockwise (CCW) to remove the cap. 3. Remove the cap. 4. T wist and remove bulb/light. 5. T o install new bulb, reverse Step #5 through S tep #1.
450260-1 www .amdry .com 35 Bask et (T umbler) System ____________ Bask et (T umbler) Driv e System The basket (tumbler) is supported and driven by four (4) 1 1-inch (27.
36 American Dryer Corp. 450260-1 ! T a per Lock Bushing and Driv e Motor Pulley Replacement 1. Discontinue electrical power to the dryer . 2. Loosen turnbuckle and remove V -belts. 3. Mark inside of the drive motor shaft. 4. Remove the bolts securing the taper lock bushing.
450260-1 www .amdry .com 37 6. Check the position of the drain plug and the breather plug. 7. Check the turnbuckle mount pad on the gear reducer for the correct application.
38 American Dryer Corp. 450260-1 Rotational Sensor Assembly The Rotational Sensor Assembly is located on the left hand side of the dryer basket (tumbler) section. It consists of a magnetic rotational switch, mounted on the bracket, which is bolted to the basket (tumbler) section.
450260-1 www .amdry .com 39 Proximity Switch Replacement 1. Discontinue electrical service to the dryer . 2. Remove the screws securing the junction box cover . 3. Mark and identify the wires that will be removed for proper reinstallation. 4. Disconnect the two (2) leads of the defective proximity switch.
40 American Dryer Corp. 450260-1 330º F (166º C) Thermostat MAN3484 Safety Devices Locations/Functions/Messages _________ T op of T umbler (Basket) _____________ The burner auto reset hi-limit switch is a thermostat type switch located in the burner .
450260-1 www .amdry .com 41 P HASE 7 N ON -C OIN S Y STEM D IAGNOSTICS __________________ Impor tant YOU MUST DISCONNECT AND LOCK OUT THE ELECTRIC SUPPL Y AND THE GAS SUPPL Y OR THE STEAM SUPPL Y BEFO.
42 American Dryer Corp. 450260-1 Outputs: (Green) 1. FSS - Fire Suppression 2. PRG2 - Programmable Output #2 3. R_HEA T - Rear Heat 4. AUDIO ALERT - Horn On 5. FWD - Basket (Tumbler) Forward 6. AIR JET - Air Jet On 7. PRG3 - Programmable Output #3 8. PRG1 - Programmable Output #1 9.
450260-1 www .amdry .com 43 Outputs: 1. FSS (GREEN LIGHT EMITTING DIODE [L.E.D.]) This L.E.D. indicates the activation of the water system. When the system is activated the L.E.D. is ON. 2. PGR2 (GREEN L.E.D.) This is for a spare output to be programmed.
44 American Dryer Corp. 450260-1 Drive Motor Operates in One (1) Direction Onl y; Stops and R estar ts in the Same Direction __________________ Appropriate microprocessor controller (computer) relay output indicator is on. Failed reversing contactor (relay).
450260-1 www .amdry .com 45 Microprocessor Controller (Computer) Board Display Reads FRONT DOORS NOT CLOSED or REAR DOORS NOT CLOSED ________ Fault (open circuit) in front or rear door switch circuit. One (1) of the front or rear door switches has failed.
46 American Dryer Corp. 450260-1 Excessive Noise And Vibration ______ Dryer is not leveled properly . Impellor (fan/blower) out of balance. Excessive lint buildup on impellor (fan/blower); check air jet. Failed impellor (fan/blower). Loose motor mount.
450260-1 www .amdry .com 47 P ROCEDURE FOR F UNCTIONAL C HECK OF R EPLACEMENT C OMPONENTS __________________ F or Models with Direct Spar k Ignition (DSI) Module (Type I) ________________ T heor y of Operation: S tart the drying cycle.
48 American Dryer Corp. 450260-1 P END ANT A SSEMBL Y ____________ Pendant Assembly Description ______ The pendant assembly is used on both the gas and steam model dryer .
450260-1 www .amdry .com 49 Notes _______________________________________________________________________________ _____________________________________________________________________________________ .
ADC 450260 1- 4/21/04-0.
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If you have not bought American Dryer Corp. AD-464 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data American Dryer Corp. AD-464 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, American Dryer Corp. AD-464 you will learn all the available features of the product, as well as information on its operation. The information that you get American Dryer Corp. AD-464 will certainly help you make a decision on the purchase.
If you already are a holder of American Dryer Corp. AD-464, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime American Dryer Corp. AD-464.
However, one of the most important roles played by the user manual is to help in solving problems with American Dryer Corp. AD-464. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device American Dryer Corp. AD-464 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
