MDG30PNH / MDG30MNV Installation Manual 30 lb Single Pocket / Phase 7 / Non-Coin with Fire Suppression System 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: Do not try to light any appliance.
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 efficient, trouble free, and most importantly safe 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.
IMPORTANT YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLYAND 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. “Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper operation.
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.
Table of Contents SECTION I SAFETY PRECAUTIONS ........................................................................................................ 2 SECTION II SPECIFICATIONS .................................................................................................................. 4 SECTION III INSTALLATION PROCEDURES ........................................................................................... 6 A. B. C. D. E. F. G. H. I. J. K. Unpacking/Setting Up ..............................
SECTION I SAFETY PRECAUTIONS WARNING: For your safety, the information in this manual must be followed to minimize the risk of fire or explosion or to prevent property damage, personal injury, or loss of life. WARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY OR FIRE COULD RESULT. 1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. 2.
WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or similarly textured rubber materials. Drying in a heated basket (tumbler) may damage plastics or rubber and may be a fire hazard. 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust ductwork, and area around the back of the dryer. The frequency of inspection and cleaning can best be determined from experience at each location.
SECTION II SPECIFICATIONS 30 lbs 13.6 kg BASKET (TUMBLER) DIAMETER 32-3/4” 83.2 cm BASKET (TUMBLER) DEPTH 25-5/8” 65.1 cm BASKET (TUMBLER) MOTOR 1/2 hp 0.373 kW DOOR OPENING (DIAMETER) 21-1/2” 54.61 cm BASKET (TUMBLER) VOLUME 12.5 cu ft 0.354 cu m MAXIMUM CAPACITY (DRY WEIGHT) DRYERS PER 20’/40’ CONTAINER 12/26 DRYERS PER 45’/48’ TRUCK 30/32 S.A.F.E. WATER CONNECTION 3/4” - 11.5 NH Gas VOLTAGE AVAILABLE 120v 1ø 2w 60 Hz APPROX. WEIGHT (UNCRATED) 534 lbs 242 kg APPROX.
Specifications NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation. 113307 - 7 Maytag Co.
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 Z223.1LATEST 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.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply Requirements in Section D). 5. Clearance provisions must be made from combustible construction as noted in this manual (refer to Dryer Enclosure Requirements in Section C). 6. Provisions must be made for adequate clearances for servicing and for operation as noted in this manual (refer to Dryer Enclosure Requirements in Section C). 7.
NOTE: Air considerations are important for proper and efficient operation. Dryers may be positioned sidewall to sidewall. However, a 1/16” (1.59 mm) minimum allowance must be made for opening and closing of the control door. It is suggested that the dryer be positioned about 2 feet (0.61 meters) away from the nearest obstruction for ease of installation, maintenance, and service (to be measured from the back guard). Refer to the illustration on the previous page for details. D.
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.
SINGLE DRYER VENTING IMPORTANT: For extended ductwork runs, the cross section 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. Horizontal Venting When horizontal dryer venting is used, the length of the ductwork from the dryer to the outside exhaust outlet, must not exceed Dimension A (30 feet [9.
MULTIPLE DRYER (COMMON) VENTING IMPORTANT: For extended ductwork runs, the cross section 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. If it is not feasible to provide separate exhaust ducts for each dryer, ducts from individual dryers may be channeled into a “common main duct.
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.
2. Electrical Service Specifications ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER) IMPORTANT: NOTES: A. B. 208 VAC AND 240 VAC ARE NOT THE SAME. When ordering, specify exact voltage. 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. Circuit breakers are thermal-magnetic (industrial) motor curve type ONLY.
a. Single-Phase (1ø) Wiring Connections/Hookup The electrical input connections on ALL single-phase (1ø) gas dryers are made into the rear service box located at the upper left area of the dryer. Single-Phase Electrical Lead Connections Black + Positive FOR 110V APPLICATIONS White or Red + Neutral or L2 Green + Ground FOR 208-240V APPLICATIONS A ground lug is provided in the rear electrical box to connect your service ground. 14 Maytag Co.
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. Technical Gas Data a. Gas Specifications TYPE OF GAS NATURAL 3.5 inches W.C. 8.7 mb 10.5 inches W.C. 26.1 mb 6.0 - 12.0 inches W.C. 14.92 - 29.9 mb 11.0 inches W.C. 27.4 mb Manifold Pressure* In-Line Pressure LIQUID PROPANE 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 ............... 1/2” N.P.T. Inlet supply size ............... 1/2” Diameter Pipe (minimum) Heat input (per dryer) ....
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.
NOTE: A water column test pressure of 3.5 inches (8.7 mb) for natural gas and 10.5 inches (26.1 mb) for liquid propane (L.P.) dryers is required at the gas valve pressure tap of each dryer for proper and safe operation. A 1/8” N.P.T. plugged tap, accessible for a test gauge connection, must be installed in the main gas supply line immediately upstream of each dryer. IMPORTANT: Pipe joint compounds that resist the action of natural gas and L.P. gas must be used.
I. PREOPERATIONAL TESTS 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. Turn on electric power to the dryer. 2. Refer to the Operating Instructions for starting your particular model dryer. 3. GAS MODELS ONLY a.
NOTE: If computer program changes are required, refer to the computer programming section of the manual supplied with the dryer. 6. The dryer should be operated through one (1) complete cycle to ensure that no further adjustments are necessary and that ALL components are functioning properly. BASKET (TUMBLER) COATING The basket (tumbler) is treated with a protective coating.
REVERSING TIMER SPIN/DWELL ADJUSTMENTS Timer models have an electronic reversing timer in the electrical service box, which is located in the upper left rear area of the dryer. Both the Dwell (stop) Time and the basket (tumbler) Spin Time are adjustable by mode selection switches located on the electronic timer (as noted in the illustration below). TIMING LEGEND SPIN TIME Adjustment Position Number 1 2 3 4 5 30 60 90 120 150 Adjustment Position Number 1 2 3 4 5 Time in Seconds* 5 6.3 7.
SECTION IV 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 the correct model number and serial number so that the inquiry is handled in an expeditious manner. B.
SECTION V WARRANTY INFORMATION A. RETURNING WARRANTY CARDS 1. 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. IMPORTANT: A separate warranty card must be completed and returned for each individual dryer.
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. Maximum operating efficiency is dependent upon proper air circulation. The accumulation of lint can restrict this airflow.
90 DAYS Inspect and remove lint accumulation in customer furnished exhaust ductwork system and from dryer’s internal exhaust ducting. WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCTWORK CAN CREATE A POTENTIAL FIRE HAZARD. WARNING: DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATION AIR. WARNING: INSPECT AND REMOVE ANY LINT ACCUMULATION, WHICH CAN CAUSE THE BACK DRAFT DAMPER TO BIND OR STICK.
SECTION VII DATA LABEL INFORMATION When contacting the Maytag dealer, certain information is required to ensure proper service/parts information. This information is on the dryer data label affixed to the left side panel area behind the top control (access) door. When contacting the Maytag Co., please have the model number and serial number available. 1. MODEL NUMBER – Describes the style of dryer and type of heat (gas, electric, or steam). 2.
SECTION VIII PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor Controller (Computer) Board a. Upon completing installation of the replacement microprocessor controller (computer) board, reestablish power to the dryer. b. Start the drying cycle by pressing any of the preset cycles in letters A-F. c. Verify that the applicable indicator lights on the back side of the microprocessor controller (computer) board are lit. (Refer to the illustration below.) 113307 - 7 Maytag Co.
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. The DSI module will “LOCKOUT” if the gas burner flame is not sensed at the end of the trial for ignition period.
SECTION IX FIRE SUPPRESSION SYSTEM Fire Suppression System In Action 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 Phase 7 microprocessor controller (computer) will trigger the fire suppression system water jet(s) to extinguish the flames quickly.
INSTALLATION 1. Requirements The fire suppression system must be supplied with a minimum water pipe size of 1/2” and be provided with 40 psi +/- 20 psi (2.75 bar +/- 1.37 bar) of pressure. For use of optional manual bypass, a second source with the same piping and pressure requirements is required. Flexible 1/2 feeds must be provided to avoid damage to electric water solenoid valve by vibration. IMPORTANT: Flexible supply line/coupling must be used.
Typical Water Supply OPTIONAL MANUAL BYPASS Provisions are made in the dryer’s fire suppression system for the installation of an optional manual bypass. The connections for the manual bypass are made at the “T” or “three way” fitting located in the outlet supply side of the water solenoid valve. The use and connections of this manual bypass are at the option or discretion of the owner. The water connection for the manual bypass is made to the “T” or “three way” fitting which has a 3/8” F.P.T.
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