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American Dryer Corp. MDG50MNV - page 1
RET AIN THESE INSTRUCTIONS IN A SAFE PLACE FOR FUTURE REFERENCE MDG50PNH / MDG50MNV Installa tion Manual 50 lb Single P oc k et / Phase 7 / Non-Coin with S.A.F .E. System Part No. 1 13308 - 7 A VER TISSEMENT : Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum le risque d’incendie ou d’explosion ou ...
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American Dryer Corp. MDG50MNV - page 2
Retain This Manual In A Safe Place For Futur e Refer ence 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 . OBSER VE ALL SAFETY PREC ...
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American Dryer Corp. MDG50MNV - page 3
CHILDREN SHOULD NOT BE ALLOWED T O PLA Y ON OR NEAR THE DR YER(S). CHILDREN SHOULD BE SUPER VISED IF NEAR DR YER(S) IN OPERA TION. W ARNING DR YER(S) SHOULD NEVER BE LEFT UNA TTENDED WHILE IN OPERA TION. CAUTION FOR YOUR SAFETY DO NOT DR Y MOP HEADS IN THE DR YER. DO NOT USE DR YER IN THE PRESENCE OF DR Y CLEANING FUMES. IMPOR T ANT YOU MUST DISCON ...
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American Dryer Corp. MDG50MNV - page 4
W ARNING The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJUR Y OR FIRE COULD RESUL T . IMPOR T ANT PLEASE OBSER VE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation manual included with the dryer . W ARNING DR YER MUST NEVER BE OPERA TED WITHOUT THE ...
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American Dryer Corp. MDG50MNV - page 5
Table of Contents SECTION I SAFETY PRECAUTIONS ......................................................................................... 3 SECTION II SPECIFICA TIONS ..................................................................................................... 5 SECTION III INST ALLA TION PROCEDURES .......................................... ...
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American Dryer Corp. MDG50MNV - page 6
SECTION VII DA T A LABEL INFORMA TION ............................................................................. 3 2 SECTION VIII PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ........................................................................................................ 3 3 SECTION IX MANUAL RESET BURNER HI-LIMIT INSTRUCTION ...
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American Dryer Corp. MDG50MNV - page 7
3 SECTION I SAFETY PRECAUTIONS W ARNING: 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. W ARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY OR FIRE ...
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American Dryer Corp. MDG50MNV - page 8
4 W ARNING: 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 arou ...
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American Dryer Corp. MDG50MNV - page 9
5 SECTION II SPECIFICA TIONS Shaded areas are stated in metric equivalents 1/30/04 NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation. M AXI M U M C APACI T Y ( DR Y W EI G H T ) 50 l bs 22. 7 kg BASKET ( T U M BLE R ) DI AM ET ER 3 2 - 3 / 4” 83. 2 cm BASKET ( T U M BLE R ) DEPT H 3 7 ...
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American Dryer Corp. MDG50MNV - page 10
6 NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation. S pecifications ...
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American Dryer Corp. MDG50MNV - page 11
7 SECTION III INST ALLA TION 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- LA TEST EDITION (National Fuel Gas Code) or ANSI/NFP A NO. 70-LA TEST EDITION (National Elect ...
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American Dryer Corp. MDG50MNV - page 12
8 B. LOCA TION 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 LA TEST EDITION, or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91 (Nat ...
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American Dryer Corp. MDG50MNV - page 13
9 C. DR YER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible material. NOTE: Allowances must be made for opening the control door . A 30-inches (76.2 cm) for optimum opening of load door . B The maximum thickness of the bulkhead is 4-inches (10.16 cm). For electric dryers the maximum thickness of the bulkhead is 1-in ...
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American Dryer Corp. MDG50MNV - page 14
10 D. FRESH AIR SUPPL Y REQUIREMENTS The air supply (make-up air) must be given careful consideration to ensure proper performance of each dryer . An unrestricted source of air is necessary for each dryer . As a general rule, an unrestricted air entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.14 square meters) is requir ...
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American Dryer Corp. MDG50MNV - page 15
11 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 ener gy , and shutdown of the burner by the airflow (sail) switch, burner hi-limits, or lint chamber hi-limit protector thermostat. The ...
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American Dryer Corp. MDG50MNV - page 16
12 NOTE: As per the National Fuel Gas Code, “Exhaust ducts for type 2 clothes dryers shall be constructed of sheet metal or other noncombustible material. Such ducts shall be equivalent in strength and corrosion resistance to ducts made of galvanized sheet steel not less than 0.0195-inches (26 gauge [0.50 mm]) thick.” SINGLE DR YER VENTING IMPO ...
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American Dryer Corp. MDG50MNV - page 17
13 VER TICAL VENTING When vertical single 10-inch (25.4 cm) venting is used (refer to Illus. B below ), the ductwork from the dryer to the outside outlet cannot exceed 40 feet (12.19 meters). This calculation compensates for the use of a maximum of three (3) elbows including the two (2) elbows creating the 180° (turned downward) outside outlet. Il ...
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American Dryer Corp. MDG50MNV - page 18
14 MUL TIPLE DR YER (COMMON) VENTING If it is not feasible to provide separate exhaust ducts for each dryer , ducts for individual dryers may be channeled into a common main duct. Each dryer is provided with a back draft damper . The individual ducts should enter the bottom or side of the main duct at an angle not more than 45° in the direction of ...
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American Dryer Corp. MDG50MNV - page 19
15 HORIZONT AL VENTING Illus. C VER TICAL VENTING Illus. D ...
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American Dryer Corp. MDG50MNV - page 20
16 F . ELECTRICAL INFORMA TION 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 ...
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American Dryer Corp. MDG50MNV - page 21
17 2. Electrical Service Specifications IMPOR T ANT : Figures shown are for non-reversing models only . For reversing models contact the factory . 9/16/08 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 ...
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American Dryer Corp. MDG50MNV - page 22
18 4. Electrical Connections A wiring diagram is located inside the control box for connection data. If local codes permit, power to the dryer can be made by the use of a flexible U.L. listed power cord/pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired directly to the service breaker panel. In both cases, a strain ...
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American Dryer Corp. MDG50MNV - page 23
19 G . GAS INFORMA TION 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 requireme ...
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American Dryer Corp. MDG50MNV - page 24
20 2. T echnical 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 ------------- 1/2” N.P .T . Inlet supply size ------------- 1/2” Diameter Pipe (minimum) Heat input (per dryer) ------ 150,000 Btu/hr (37,800 ...
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American Dryer Corp. MDG50MNV - page 25
21 3. Piping Connections ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LA TEST EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P .] Gas) or LA TEST EDITION (for General Installation and Gas Plumbing), as well as local codes and ordinances and must be done ...
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American Dryer Corp. MDG50MNV - page 26
22 Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch (19.05 mm) pipe gas loop be installed in the supply line servicing a bank of dryers. An in-line pressure regulator must be installed in the gas supply line (header) if the (natural) gas pressure exceeds 12.0 inches (29.9 mb) of water column (W .C.) pre ...
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American Dryer Corp. MDG50MNV - page 27
23 H. PREP ARA TION FOR OPERA TION/ST AR T -UP The following items should be checked before attempting to operate the dryer: 1. Read ALL “ CAUTION ,” “ W ARNING ,” 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. 3. GAS MODELS - check t ...
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American Dryer Corp. MDG50MNV - page 28
24 I. PREOPERA TIONAL 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. T urn on electric power to the dryer . 2. Ref ...
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American Dryer Corp. MDG50MNV - page 29
25 5. Make a complete operational check of ALL operating controls. 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 functionin ...
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American Dryer Corp. MDG50MNV - page 30
26 DUAL TIMER DR YERS 1. T urn drying timer knob for a time of 20 minutes. 2. Select “High T emp.” 3. Push “Push to Start” switch. 4. T o stop dryer , open the main door . Spin and dwell (stop) times are adjustable at the reversing timer . REVERSING TIMER SPIN/DWELL ADJUSTMENTS T imer models have an electronic reversing timer in the electri ...
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American Dryer Corp. MDG50MNV - page 31
27 SECTION IV SER VICE/P AR TS INFORMA TION A. SER VICE 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 ...
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American Dryer Corp. MDG50MNV - page 32
28 SECTION V W ARRANTY INFORMA TION A. RETURNING W ARRANTY 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 ...
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American Dryer Corp. MDG50MNV - page 33
29 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 ...
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American Dryer Corp. MDG50MNV - page 34
30 90 DA YS Inspect and remove lint accumulation in customer furnished exhaust ductwork system and from dryer ’ s internal exhaust ducting. W ARNING: THE ACCUMULA TION OF LINT IN THE EXHAUST DUCTWORK CAN CREA TE A POTENTIAL FIRE HAZARD. W ARNING: DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILA TION AIR. W ARNING: INSPECT AND REMOVE ANY LINT AC ...
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American Dryer Corp. MDG50MNV - page 35
31 D. LINT DRA WER REMOV AL T o remove the lint drawer from the dryer pull drawer out approximately halfway . Rotate/move lint drawer stop hinge (refer to the illustration below ) downward and pull the drawer out. IMPOR T ANT : After replacing the lint drawer back into the dryer , be sure to rotate/move hinge back to the upward stop position. ...
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American Dryer Corp. MDG50MNV - page 36
32 SECTION VII DA T A LABEL INFORMA TION When contacting the Maytag Co ., certain information is required to ensure proper service/parts information. This information is on the data label af fixed 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 availa ...
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American Dryer Corp. MDG50MNV - page 37
33 SECTION VIII PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor Controller (Computer) Board a . Phase 7 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 temperature selection keys (HI, MED, ...
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American Dryer Corp. MDG50MNV - page 38
34 b. Phase 7 Non-Coin Models 1) Upon completing installation of the replacement microprocessor controller (computer) board, reestablish power to the dryer . 2) S tart the drying cycle by pressing any of the preset cycles in letters A-F . 3) V erify that the applicable indicator lights on the microprocessor controller (computer) board are lit. (Ref ...
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American Dryer Corp. MDG50MNV - page 39
35 2. For Models with Direct Spark Ignition (DSI) Module (T ype 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 ? ...
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American Dryer Corp. MDG50MNV - page 40
36 SECTION IX 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 “b ...
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American Dryer Corp. MDG50MNV - page 41
37 The exclusive Sensor Activated Fire Extinguishing (S.A.F .E.) 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 S.A.F .E. system water jet(s) to quickly extinguish the flames. The water jet(s) remain on ...
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American Dryer Corp. MDG50MNV - page 42
38 BEFORE YOU ST AR T! CHECK LOCAL CODES AND PERMITS Call your local water company or the proper municipal authority for information regarding local codes. IMPOR T ANT : It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the plumbing installation is adequate and conforms to local, state, and f ...
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American Dryer Corp. MDG50MNV - page 43
39 2. W ater Connections: The water connection is made to the 3/4”-1 1.5 NH hose adapter of the electric water solenoid valve, located at the rear upper midsection of the dryer (refer to the photo). The water solenoid valve has a 3/8” M.P .T . connection supplied with a 3/4”-1 1.5 NH hose adapter to provide the minimum 1/2-inch supply (feed) ...
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American Dryer Corp. MDG50MNV - page 44
40 OPTIONAL MANUAL BYP ASS Provisions are made in the dryer S.A.F .E. system for the installation of an optional manual bypass. Depending on the model dryer , the connections for the manual bypass are made at the “T” or “four way” fitting located in the outlet supply side of the water solenoid valve. The use and connections of this manual b ...
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American Dryer Corp. MDG50MNV - page 45
41 S.A.F .E. 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 thermistor probe, located in the top of the basket (tumbler) chamber , and records the minimum temperature. If the minimum recorded thermistor probe temperature is greater than 120° F (48° C) and th ...
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American Dryer Corp. MDG50MNV - page 46
42 NOTE: The control will not let the user continue until the valve test has been completed. S.A.F .E. SYSTEM DIAGNOSTICS In the event that the Phase 7 non-coin microprocessor controller (computer) detects a fault in the S.A.F .E. system, the control will display the message “S.A.F .E. SYSTEM DISABLED…READY .” T o find out why the S.A.F .E. s ...
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American Dryer Corp. MDG50MNV - page 47
43 Notes _____________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________________ ___________________________________________________________________________________________________ ...
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American Dryer Corp. MDG50MNV - page 48
Part No. 1 13308 7 - 09/16/08 - 5 ...
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