Maytag MD-170PTVW Installation Manual

Phase 7 / non-coin / dual timer with s.a.f.e. system

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MDG-120PVV / MD-170PTVW
Installation Manual
Phase 7 / Non-Coin / Dual Timer
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
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO 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.
with S.A.F.E. System
RETAIN THESE INSTRUCTIONS IN A SAFE
PLACE FOR FUTURE REFERENCE
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:
• Ne pas tenter d'allumer d'appareils.
• Ne touchez à aucun interrupteur. Ne pas
vous servir des téléphones se trouvant dans
le bâtiment.
• Évacuez la pièce, le bâtiment ou la zone.
• Appelez immédiatement votre fournisseur
de gaz depuis un voisin. Suivez les
instructions du fournisseur.
• 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.
Part No. 113395-6

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Summary of Contents for Maytag MD-170PTVW

  • Page 1 MDG-120PVV / MD-170PTVW Installation Manual Phase 7 / Non-Coin / Dual Timer with S.A.F.E. System 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.
  • Page 2 Retain This Manual In A Safe Place For Future Reference This product embodies 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 manual included with the dryer.
  • Page 3: For Your Safety

    YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND THE GAS 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 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 and/or specified in the installation manual included with the dryer.
  • Page 5: Table Of Contents

    SECTION I SAFETY PRECAUTIONS ... 4 SECTION II SPECIFICATIONS ... 6 A. MDG-120 Specifications ... 6 B. MD-170 Specifications ... 8 SECTION III INSTALLATION PROCEDURES ... 10 A. Location Requirements ... 10 B. Unpacking/Setting Up ... 11 C. Dryer Enclosure Requirements ... 14 D.
  • Page 6: Safety Precautions

    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 7 7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust ductwork, and inside the dryer. The frequency of inspection and cleaning can best be determined from experience at each location. WARNING: The collection of lint in the burner area and exhaust ductwork can create a potential fire hazard.
  • Page 8: Specifications

    A. MDG-120 SPECIFICATIONS MAXIMUM CAPACITY (DRY WEIGHT) BASKET (TUMBLER) DIAMETER BASKET (TUMBLER) DEPTH BASKET (TUMBLER) VOLUME BASKET (TUMBLER) MOTOR DOOR OPENING (DIAMETER) EXHAUST CONNECTION (DIAMETER) DRYERS PER 20’/40’ CONTAINER DRYERS PER 48’/53’ TRUCK WATER CONNECTION VOLTAGE AVAILABLE APPROX. NET WEIGHT APPROX.
  • Page 9 MDG-120 Specifications NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation. 113395 - 6 Maytag Co.
  • Page 10: Md-170 Specifications

    B. MD-170 SPECIFICATIONS MAXIMUM CAPACITY (DRY WEIGHT) TUMBLER DIAMETER TUMBLER DEPTH TUMBLER VOLUME TUMBLER/DRIVE MOTOR BLOWER/FAN MOTOR DOOR OPENING (DIAMETER) DOOR SILL HEIGHT WATER CONNECTION DRYERS PER 20’/40’ CONTAINER DRYERS PER 48’/53’ TRUCK VOLTAGE AVAILABLE APPROXIMATE NET WEIGHT APPROXIMATE SHIPPING WEIGHT AIRFLOW HEAT INPUT EXHAUST CONNECTION (DIAMETER)
  • Page 11 MD-170 Specifications NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation. 113395 - 6 Maytag Co.
  • 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: 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: Unpacking/Setting Up

    CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6 months, inspect the exhaust ducting and remove any lint buildup. IMPORTANT: The 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). B.
  • Page 14 2. If more headroom is needed when moving dryer into position, the top console (module) may be removed. To Remove Top Console (Module) a. Disconnect the ground wire (A) at the rear upper left hand corner of dryer. b. Remove the eight (8) sets of nuts and washers (B) holding the console (module) to base. c.
  • Page 15 3. Exhaust Transition Piece An exhaust duct transition piece is shipped inside of the dryer’s tumbler and must be installed on the dryer’s exhaust duct, with the hardware provided, BEFORE location venting is connected to the dryer. THIS EXHAUST DUCT TRANSITION PIECE MUST BE INSTALLED FIRST! Failure to observe this installation requirement may result in damage to the dryer, create a FIRE HAZARD and will VOID...
  • Page 16: Dryer Enclosure Requirements

    C. DRYER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible material. NOTE: Allowances must be made for opening the control door. A. 40-inches (101.6 cm) for optimum opening of load door. B. The maximum thickness of the bulkhead is 4-inches (10.16 cm). C.
  • Page 17: Fresh Air Supply Requirements

    D. FRESH AIR SUPPLY REQUIREMENTS When the dryer is operating, it draws in room air, heats it, passes this air through the tumbler, and exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the make-up air is inadequate, drying time and drying efficiency will be adversely affected.
  • Page 18: Exhaust Requirements

    E. EXHAUST REQUIREMENTS Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork will create excessive back pressure, which results in slow drying, increased use of energy, and shutdown of the burner by the airflow (sail) switch, burner hi-limits, or lint chamber hi-limit protector thermostat. The dryer must be installed with a proper exhaust duct connection to the outside.
  • Page 19 1. Single Dryer Venting IMPORTANT: For extended ductwork runs, the cross-sectional area of the ductwork can only be increased to an extent. When the ductwork approaches the maximum limits as noted in this manual, a professional heating, ventilating, and air-conditioning (HVAC) firm should be consulted for proper venting information.
  • Page 20 4. Multiple Dryer (Common) Venting IMPORTANT: For extended ductwork runs, the cross-sectional area of the ductwork can only be increased to an extent. When the ductwork approaches the maximum limits as noted in this manual, a professional heating, ventilating, and air-conditioning (HVAC) firm should be consulted for proper venting information.
  • Page 21: Electrical Information

    F. ELECTRICAL INFORMATION 1. Electrical Requirements ALL electrical connections must be made by a properly licensed and competent electrician. This is to ensure that the electrical installation is adequate and conforms to local and state regulations or codes. In the absence of such codes, ALL electrical connections, materials, and workmanship must conform to the applicable requirements of the National Electrical Code ANSI/NFPA NO.
  • Page 22 2. Electrical Service Specifications IMPORTANT: Figures shown are for reversing models. 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 .
  • Page 23 3. Grounding A ground (earth) connection must be provided and installed in accordance with state and local codes. In the absence of these codes, grounding must conform to applicable requirements of the National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION, or in Canada, the installation must conform to applicable Canada Standards: Canadian Electrical Codes Parts 1 &...
  • Page 24: Gas Information

    G. GAS INFORMATION It is your responsibility to have ALL plumbing connections made by a qualified professional to ensure that the gas plumbing installation is adequate and conforms to local and state regulations or codes. In the absence of such codes, ALL plumbing connections, materials, and workmanship must conform to the applicable requirements of the National Fuel Gas Code ANSI Z223.1-LATEST EDITION, or in Canada, the Canadian Installation Codes CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION.
  • Page 25 2. Technical Gas Data a. Gas Specifications Shaded areas are stated in metric equivalents * Measured at outlet side of gas valve pressure tap when gas valve is on. b. Gas Connections Inlet connection -------------- 1” N.P.T. Inlet supply size -------------- 1” Diameter Pipe (minimum) 1) Natural Gas Regulation is controlled by the dryer’s gas valve’s internal regulator.
  • Page 26 3. Piping/Connections ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LATEST EDITION, or in Canada, 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), as well as local codes and ordinances and must be done by a qualified professional.
  • Page 27 IMPORTANT: The dryer and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa). NOTE: The dryer must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).
  • Page 28: Preparation For Operation

    H. PREPARATION FOR OPERATION The following items should be checked before attempting to operate the dryer: 1. Read ALL “CAUTION,” “WARNING,” and “DIRECTION” labels attached to the dryer. 2. Check incoming supply voltage to be sure that it is the same as indicated on the dryer data label. In case of 208 VAC or 230 VAC, the supply voltage must match the electric service exactly.
  • Page 29: Preoperational Test

    I. 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. It is possible that adjustments have changed in transit or due to marginal location (installation) conditions. 1.
  • Page 30 The steam damper should not “slam” (open or closed) when it reaches the end of (piston) travel. Additionally, the steam damper should not bind and/or stop during travel. If either of these conditions occur, the flow control must be adjusted. Refer to the bottom illustration on page 34 for air adjustment instructions.
  • Page 31: Shutdown Instructions

    J. 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 32: Compressed Air Requirements (Md-170 Only)

    L. COMPRESSED AIR REQUIREMENTS (MD-170 Only) The MD-170 model dryer requires an external supply of compressed air of 2.5 cfm at 80 psi (552 kPa). For steam models, compressed air is necessary for the air operated steam damper. On both the steam model as well as the gas model, compressed air is necessary/required for blower air jet operation, to clean lint from the impellor/ fan (squirrel cage).
  • Page 33: Steam Information (Md-170 Only)

    M. STEAM INFORMATION (MD-170 Only) It is your responsibility to have ALL steam plumbing connections made by a qualified professional to assure that the installation is adequate and conforms to 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 34 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 35 4. Steam Damper Air System Connections The dryer is manufactured with a pneumatic (piston) damper system, which requires an external supply of compressed air. The air connection is made to the steam damper solenoid valve, which is located at the rear inner top area of the dryer just in front of the electric service relay box.
  • Page 36 6. Steam Damper Air Piston (Flow Control) Operation Adjustment Although the steam damper operation was tested and adjusted prior to shipping at 80 psi (5.51 bar), steam damper operation must be checked before the dryer is put into operation. Refer to the illustration above for correct steam damper operation.
  • Page 37: Service/Parts Information

    SERVICE/PARTS INFORMATION A. SERVICE Service must be performed by a qualified trained technician, service agency, or gas supplier. If service is required, contact the dealer from whom the Maytag equipment was purchased. If the dealer cannot be contacted or is unknown, contact the Maytag Co. for a dealer in your area. NOTE: When contacting the Maytag Co., be sure to give them the correct model number and serial number so that your inquiry is handled in an expeditious manner.
  • Page 38: Warranty Information

    WARRANTY INFORMATION A. RETURNING WARRANTY CARDS Before any dryer leaves the manufacturer’s 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 39: Routine Maintenance

    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. Maximum operating efficiency is dependent upon proper air circulation.
  • Page 40 STEAM DRYERS Clean the steam coil fins. Suggest using compressed air and a vacuum cleaner with brush attachment. NOTE: When cleaning steam coil fins, be careful not to bend the fins. If fins are bent, straighten by using a fin comb, which is available from any local air-conditioning supply house. 90 DAYS Remove lint from around basket (tumbler), drive motors, and surrounding areas.
  • Page 41: Adjustments

    B. ADJUSTMENTS 7 DAYS AFTER INSTALLATION AND EVERY 6 MONTHS THEREAFTER Inspect bolts, nuts, screws, 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.
  • Page 42: Manual Reset Burner Hi-Limit Instructions

    SECTION VII MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS A. PHASE 7 This dryer was manufactured with a manual reset burner hi-limit thermostat, which is monitored by the Phase 7 computer. If the burner hi-limit is open prior to the start of the drying cycle, the dryer will start momentarily and then shut down, the Phase 7 computer will display “burner HIGH LIMIT fault”...
  • Page 43: Data Label Information

    DATA LABEL INFORMATION When contacting Maytag, certain information is required to ensure proper service/parts information from Maytag. This information is on the data label affixed to the left side panel/wall area behind the control door. When contacting Maytag, please have the model number and serial number available. 1.
  • Page 44: Reversing Timer Spin/Dwell Adjustments

    REVERSING TIMER SPIN/DWELL ADJUSTMENTS Timer models have an electric reversing timer in the electric service box, which is located in the upper left rear area of the dryer. Both the dwell (stop) time and basket (tumbler) spin time are adjustable by mode selection switches located on the electronic timer (refer to the illustration below).
  • Page 45: Procedure For Functional Check Of Replacement Components

    PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor Controller (Computer) Board a. Phase 7 Non-Coin Models 1) Upon completing installation of the replacement microprocessor controller (computer) board, reestablish power to the dryer. 2) Start the drying cycle by pressing any of the preset cycles in letters A-F.
  • Page 46 2. For Models with Direct Spark Ignition (DSI) Module (Type I) Theory of Operation: Start the drying cycle. When the gas burner ignites within the chosen trial for ignition time (6-seconds), the flame sensor detects gas burner flame and signals the DSI module to keep the gas valve open as long as there is a call for heat.
  • Page 47: Sensor Activated Fire Extinguishing (S.a.f.e.) System

    SENSOR ACTIVATED FIRE EXTINGUISHING (S.A.F.E.) SYSTEM (MICROPROCESSOR MODELS ONLY) The exclusive fire 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 controller (computer) will trigger the fire suppression system water jet(s) to extinguish the flames quickly.
  • Page 48 2. Water Connections: The water connection is made to the 3/4”-11.5 NH hose adapter of the electric water solenoid valve, located at the rear upper midsection of the dryer (refer to the photograph). The water solenoid valve has a 3/8” M.P.T. connection supplied with a 3/4”-11.5 NH hose adapter to provide the minimum 1/2-inch supply (feed) line.
  • Page 49 WARNING: If the water in the supply line or water solenoid valve freezes, the fire suppression system will be INOPERATIVE!! The manual ball cock shutoff valve must be located outside of the dryer at a distance from the dryer where it is easily accessible.
  • Page 50: System Reset

    Once the fire suppression system routine is activated, the microprocessor controller (computer) will display “S.A.F.E. SYSTEM ACTIVATED” and water will be injected into the basket (tumbler) chamber. Any time water is being injected into the basket (tumbler), the basket (tumbler) drive will turn the load for 1-second every 15-seconds.
  • Page 51 FIRE SUPPRESSION SYSTEM DIAGNOSTICS MESSAGES OPEN THERMISTOR PROBE – This message indicates that the fire suppression system thermistor probe either is not connected or is damaged. If this condition is detected, the microprocessor controller (computer) will immediately enter S.A.F.E. SYSTEM DISABLED Mode. SHORTED THERMISTOR PROBE –...
  • Page 52 Part No. 113395 6 - 05/01/07 - 0...

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Mdg-120pvv

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