American Dryer Corp. AD-464 Installation Manual
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American Dryer Corp. AD-464 Installation Manual

Phase 7 gas / steam
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AD-464 / ML-460 Installation Manual
WARNING: For your safety the information
in this manual must be followed to
minimize the risk of fire or explosion and
to prevent property damage, personal
injury or death.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS:
G
Do not try to light any appliance.
G
Do not touch any electrical switch;
do not use any phone in your
building.
G
Clear the room, building or area of
all occupants.
G
Immediately call your gas supplier
from a neighbor's phone. Follow
the gas supplier's instructions.
G
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.
Phase 7 Gas / Steam
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 à proximité de cet
appareil ou de tout autre appareil.
—QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ:
G
Ne pas tenter d'allumer d'appareils.
G
Ne touchez à aucun interrupteur. Ne
pas vous servir des téléphones se
trouvant dans le bâtiment.
G
Évacuez la pièce, le bâtiment ou la
zone.
G
Appelez immédiatement votre
fournisseur de gaz depuis un voisin.
Suivez les instructions du fournisseur.
G
Si vous ne pouvez rejoindre le
fournisseur de gaz, appelez le service
des incendies.
—L'installation et l'entretien doivent être
assurés par un installateur ou un
service d'entretien qualifié ou par le
fournisseur de gaz.
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781 USA
Telephone: +1 (508) 678-9000 / Fax: +1 (508) 678-9447
e-mail: techsupport@amdry.com
www.amdry.com
ADC Part No. 113068- 10

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  • Page 1 AD-464 / ML-460 Installation Manual Phase 7 Gas / Steam AVERTISSEMENT: Assurez-vous de bien WARNING: For your safety the information suivre les instructions données dans cette in this manual must be followed to notice pour réduire au minimum le risque minimize the risk of fire or explosion and d’incendie ou d’explosion ou pour éviter...
  • Page 2 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.
  • Page 3 WARNING Proposition 65 Use of this product could expose you to substances from fuel combustion that contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. In the State of Massachusetts, the following installation instructions apply: I Installations and repairs must be performed by a qualified or licensed contractor, plumber, or gasfitter qualified or licensed by the State of Massachusetts.
  • Page 4 FOR YOUR SAFETY DO NOT DRY MOP HEADS IN THE DRYER. DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES. WARNING UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, or the heat safety circuits ever be disabled. WARNING Do not modify this appliance.

  • Page 5: Table Of Contents

    Table of Contents SECTION I IMPORTANT INFORMATION ................3 A. Receiving and Handling ..................3 B. Safety Precautions ....................4 SECTION II SPECIFICATIONS / DIMENSIONS ............... 6 A. Specifications (Gas and Steam) ................6 B. Dimensions (Gas and Steam) ................7 SECTION III INSTALLATION PROCEDURES ................
  • Page 6 SECTION VI ROUTINE MAINTENANCE .................. 49 A. Cleaning ......................49 B. Adjustments ...................... 51 C. Lubrication ......................51 D. Basket (Tumbler) ....................51 E. Air Blower Drive System .................. 51 SECTION VII DATA LABEL LOCATION / INFORMATION ............ 52 SECTION VIII SERVICE / PARTS INFORMATION ..............

  • Page 7: Important Information

    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 Precautions

    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 IMPORTANT: Dryer must be installed in a location/environment, which the ambient temperature remains between 40° F (4.44° C) and 130° F (54.44° C). 8. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust ductwork, and inside the dryer.

  • Page 10: Specifications / Dimensions

    SECTION II SPECIFICATIONS / DIMENSIONS A. SPECIFICATIONS (GAS AND STEAM) MAXIMUM CAPACITY (DRY WEIGHT) 460 lb 208.65 kg 113.40 kg MINIMUM LOAD SIZE 250 lb TUMBLER DIAMETER 69-1/8” 175.59 cm TUMBLER DEPTH 80-5/16” 203.99 cm 4955.44 L TUMBLER VOLUME 175 cu ft DOOR OPENING (WIDTH X HEIGHT) 53-1/4”...

  • Page 11: Dimensions (Gas And Steam)

    B. DIMENSIONS (GAS AND STEAM) 113068 - 10 www.amdry.com...

  • Page 12: Installation Procedures

    SECTION III 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: ANSI Z223.1- LATEST EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-LATEST EDITION (National Electrical Code) or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General Installation and Gas Plumbing) or Canadian Electrical Codes Parts 1 &...
  • Page 13 2. Reassembly Instructions for Dryers Shipped In Three (3) Pieces When the dryer is shipped in three (3) pieces, the basket (tumbler) and the basket (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 Basket (Tumbler) Section To The Basket (Tumbler) Base Lift the basket (tumbler) section with a cable through the eyebolts on top of the section. Slowly lower the basket (tumbler) section over the basket (tumbler) base. The four (4) large slots located on the bottom of the basket (tumbler) section (one [1] slot at each corner of the basket [tumbler] section) must be aligned with the tapped holes in the cylinder cleaves located at the top of the basket (tumbler) section.

  • Page 15: Location Requirements

    B. LOCATION REQUIREMENTS Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1 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 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General Installation and Gas Plumbing).

  • Page 16: Internal Air, Electric, And Water Connections

    C. INTERNAL AIR, ELECTRIC, AND WATER CONNECTIONS 1. Air a. Front Tilt Piston This connection is made at the front of the dryer in the area between the lower heat console section and the basket (tumbler) base section. To connect the 3/8” poly-flo tubing to the corresponding brass fittings, match the marked number on the tube with the number on the brass fitting.
  • 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. Basket (Tumbler) Motors The disconnects for the one (1) basket (tumbler) motor is located in the lower heat console. The left drum (basket [tumbler]) motor disconnect is located in the base of the lower heat console to the right. On the cable the mechanical connection should be made to the respective junction box.
  • Page 19 c. Annunciator, Optional Pendant, Over-Burner, and Resistance Temperature Detector (RTD) Cable Remove the four (4) bolts that hold on the character panel. Open the door to the main electrical enclosure, the female end of the RTD cable will be found there. Loosen the 1-inch lock nut and remove the modified hole seal.
  • Page 20 d. Optional Pendant On the top of the heat console section of the dryer near the pendant, 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 21 e. Basket (Tumbler) Junction Box Disconnect Remove the four (4) bolts that hold on the lower left side panel, then remove the panel. The safety panel is next to be removed. This is done by removing the six (6) bolts on the bottom of the safety panel where the basket (tumbler) section and the base meet.

  • Page 22: External Supply Connections

    D. EXTERNAL SUPPLY CONNECTIONS 1. Compressed Air Supply A minimum requirement of 20 cfh (0.57 cmh) at 80 psi (5.51 bar) of dry, clean and regulated compressed air must be supplied to the dryer. The compressed air supply must be connected into the 3/8” F.P.T. fitting, which is located in the rear corner of the lower heat console section.
  • Page 23 2. Gas Piping The gas connection to the dryer is made into the 2-1/2” F.P.T. shutoff 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 mb) and 13 inches (32.34 mb) water column (W.C.) for natural gas or 10.5 inches (26.12 mb) water column (W.C.) for liquid propane (L.P.) gas.
  • Page 24 3. Steam Supply and Condensate Return Connections The steam supply line into the dryer is made into the 2-1/2” F.P.T. pipe fitting located on top of the heat module console. The maximum operating steam supply pressure is 150 psig (1,034 kPa). The presence of condensate in the steam supply line will cause water hammer and subsequent steam coil (battery) failure.

  • Page 25: Fresh Air Supply Requirements

    E. FRESH AIR SUPPLY REQUIREMENTS When the dryer is operating, it draws in room air, heats 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 make-up air is inadequate, drying time and efficiency will be adversely affected, and safety will be compromised.
  • Page 26 The shape of the ductwork is not critical so long as the minimum cross section area is provided. It is suggested that the use of 90° turns in ducting be avoided; use 30° and/or 45° angles instead. The radius of the elbow should preferably be 1-1/2 times the diameter of the duct.
  • Page 27 113068 - 10 www.amdry.com...
  • Page 28 American Dryer Corp. 113068 - 10...
  • Page 29 a. Outside Ductwork Protection 1) To protect the outside end of the horizontal ductwork from the weather, a 90° elbow bent downward should be installed where the exhaust exits the building. If the exhaust ductwork travels vertically up through the roof, it should be protected from the weather by using a 180° turn to point the opening downward.

  • Page 30: Steam Information

    G. STEAM INFORMATION It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the steam plumbing installation is adequate and conforms with local and state regulations or codes. IMPORTANT: Failure to comply with the requirements stipulated in this manual can result in component failure, which will VOID THE WARRANTY.
  • Page 31 b. The steam supply line to the dryer must include a 12-inch (30.48 cm) riser along with a drip trap and check valve. This will prevent any condensate from entering the steam coil. c. Flexible hoses or couplings must be used. The dryer vibrates slightly when it runs and this will cause the steam coil connections to crack if they are hard piped to the supply and return mains.

  • Page 32: Shutdown Instructions

    H. SHUTDOWN INSTRUCTIONS If the dryer is to be shutdown (taken out of service) for a period of time, the following must be performed: 1. Discontinue power to the dryer either at the external disconnect switch or the circuit breaker. 2.

  • Page 33: Preoperational Test

    b) The regulator will maintain a nearly constant outlet air pressure of 80 psi (5.51 bar) so that the dryer’s air pistons will function normally despite upstream air pressure variation. J. PREOPERATIONAL TEST ALL dryers are thoroughly tested and inspected before leaving the factory. However, a preoperational test should be performed before the dryer is publicly used.
  • Page 34 NOTE: Mechanical functions of the dryer are not allowed during the ON time. The blower (fan) must be OFF to perform mechanical functions. However the “STOP/CLEAR” key may be pressed at any time to end the Wrinkle Guard Cycle. Mechanical functions of the dryer is allowed during the OFF time.

  • Page 35: Preparation For Operation / Start-Up

    IMPORTANT: There is no regulator provided in a liquid propane (L.P.) dryer. The water column (W.C.) pressure must be regulated at the source (L.P. tank) or an external regulator must be added to each dryer. b. Steam Models 1) Check to ensure that the steam damper is functioning properly. 2) Make a complete operational check of ALL safety related circuits (i.e., lint drawer switch and sail switches on gas models).

  • Page 36: Electrical Requirements

    5. GAS MODELS – Be sure that ALL gas shutoff valves are in the open position. 6. Be sure ALL side and base panels are on the dryer. 7. Check ALL service doors to assure that they are closed and secure. 8.
  • Page 37 1. Electrical Service Specifications (Gas) ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER) IMPORTANT: 208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering, specify exact voltage. NOTES: When fuses are used they must be dual element, time delay, current limiting, class RK1 or RK5 ONLY . Calculate/determine correct fuse value, by applying either local and/or National Electrical Codes to listed appliance amp draw data.
  • Page 38 2. Electrical Service Specifications (Steam) ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER) IMPORTANT: 208 VAC AND 230/240 VAC ARE NOT THE SAME. When ordering, specify exact voltage. NOTES: When fuses are used they must be dual element, time delay, current limiting, class RK1 or RK5 ONLY . Calculate/determine correct fuse value, by applying either local and/or National Electrical Codes to listed appliance amp draw data.

  • Page 39: Component System Descriptions

    SECTION IV COMPONENT SYSTEM DESCRIPTIONS A. BASKET (TUMBLER) DRIVE SYSTEM The basket (tumbler) is supported and driven by four (4) 11-inch (27.94 cm) diameter drive wheels. Two (2) of these wheels are attached to a 2-inch (5.08 cm) diameter idler shaft, while the other two (2) are attached to a 2-inch (5.08 cm) diameter drive shaft.

  • Page 40: Main Air Blower And Heat Reclaimer System

    B. MAIN AIR BLOWER AND HEAT RECLAIMER SYSTEM The fan, which moves the exhaust air through the dryer is a 22-inch (55.88 cm) diameter, squirrel cage wheel that is driven at 1,100 RPM by a 25 hp (18.6 kW) motor. This fan moves a maximum of 13,000 cfm (368 cmm) air through the dryer.
  • Page 41 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 42: Gas Burner And Ignition System

    C. GAS BURNER AND IGNITION SYSTEM The dryer gas burner system operates on an on/off gas rate sequence to accurately control the basket’s (tumbler’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 43 1. Major Burner Components a. Burner Controller Module (BCM) The BCM provides effective burner flame safeguard control through adjustable purge and trial-for- ignition timing. The BCM ensures that ALL dryer safety switch circuits are closed, delays ignition to allow the combustion chamber to vent, and ensures that a healthy pilot flame is established before opening the main gas valves.
  • Page 44 2) Light emitting diode (L.E.D.) and Neon Displays of the Burner Controller Module (BCM) a) Operating Interlock – L.E.D. is lit when: ALL safety interlock switches are closed applying a 120 VAC signal to terminal #7 of the BCM. b) Operating Interlock – L.E.D. is not lit when: One or more safety interlock switches are open.
  • Page 45 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) Pilot Test/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 46 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 (0.4-0.6 inches [0.995-1.49 mb] of water column [W.C.]).
  • Page 47 (2) The pilot line contains a back-loaded pressure regulator with an impulse line connected to the gas burner inlet. The regulator will maintain a constant pilot supply pressure in the burner due to an increase in temperature. DO NOT adjust this regulator. 6) Main Gas Supply Line The main gas supply line consists of a pressure regulator, two (2) motorized shutoff valves, Hi/Lo gas pressure switch, main gas valve proof of closure switch, and manual shutoff valve.
  • Page 48 If ALL safety switches are closed, the burner controller module (BCM) will start the burner fan motor (BCM terminal #8). The BCM 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. If this circuit is open during the drying cycle, the “Air Failure”...
  • 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 2. Electrical Service The electrical power is connected to the dryer at the high voltage section of the control cabinet. On the dryer, this section is located at the bottom left of the main electrical enclosure. Feed the electrical service cables to the dryer using the pre-punched knockouts at the bottom section of the electrical cabinet right wall.

  • Page 51: Safety Devices

    D. SAFETY DEVICES 1. Load/Unload Door Switches There are two (2) of these switches located above the main loading doors. These switches ensure that the doors are closed before the dryer can start and ensures that the doors are fully open before the dryer will tilt.

  • Page 52: Pre Start-Up

    SECTION V 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 in the right hand side of the main electrical enclosure. 2. Open ALL steam supply lines and condensate return line shutoff valves. 3.

  • Page 53: Routine Maintenance

    SECTION VI ROUTINE MAINTENANCE A. CLEANING A program and/or 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. The frequency of cleaning can best be determined from experience at each location.
  • Page 54 MONTHLY Empty the compressed air filter bowl. Regrease the two (2) 1-3/8” bearings that support the impellor/fan shaft. Use Shell Alvania #2 grease or its equivalent. Impellor/fan shaft bearings must be lubricated. EVERY 3 MONTHS Apply a Hi-temperature grease to the four (4) 1-1/2” diameter basket (tumbler) drive shaft pillow block bearings. (Use Shell Alvania #2 grease or its equivalent).

  • Page 55: Adjustments

    B. ADJUSTMENTS 7 DAYS AFTER INSTALLATION AND EVERY 6 MONTHS THEREAFTER Inspect bolts, nuts, screws (bearing setscrews), grounding connections, and nonpermanent gas connections (unions, shutoff valves, and orifices). Motor and drive belts should be examined. Cracked or seriously frayed belts should be replaced. Tighten loose V-belts when necessary. Complete operational check of controls and valves.

  • Page 56: Data Label Location / Information

    SECTION VII DATA LABEL LOCATION / INFORMATION When contacting American Dryer Corporation, certain information is required to ensure proper service/parts information from ADC. This information is on the data label, which is located in the right hand side of the main electrical enclosure.

  • Page 57: Service / Parts Information

    SECTION VIII 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.

  • Page 58: Suppression System

    SECTION IX SUPPRESSION SYSTEM The exclusive Suppression System will extinguish fires that may start in the drying basket (tumbler). A series of sensors positioned throughout the basket (tumbler) and interfaced with the microprocessor will trigger the suppression system water jets to quickly extinguish the flames. The water jets remain on for 2 minutes and will automatically activate again if a fire condition remains or reignites.
  • Page 59 2. Water Connections: The water connection is made to the 1” F.P.T. bushing of the electric water solenoid valve located at the front lower left area of the dryer. The water solenoid valve has a 1/2” M.P.T. connection and a 1/2” bushing is supplied to provide the minimum 1/2-inch supply (feed) line.
  • Page 60 The water connection for the manual bypass is made to the “T” or “four way” fitting, which has a 1/2” F.P.T. and a coupling must be used to provide the minimum 1/2-inch supply (feed) line. If the rear area of the dryer, or the water supply is located in an area where it will be exposed to cold/freezing temperatures, provisions must be made to protect these water lines from freezing.

  • Page 61: Suppression System Theory Of Operation

    SUPPRESSION SYSTEM THEORY OF OPERATION While the dryer is in an idle state or 20-seconds after the heat turns off, the Phase 7 control monitors the suppression system probe located in the top of the basket (tumbler) chamber and records the minimum temperature. If the minimum recorded suppression system probe temperature is no less than 120°...
  • Page 62 ADC Part No. 113068 10 - 05/22/12...

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Ml-460

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