Instruction/ maintenance manual of the product MD-170PTVW Maytag
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MDG-120PVV / MD-170PTVW Installa tion Manual Phase 7 / Non-Coin / Dual Timer with S.A.F .E. System 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 death.
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 safe, efficient, and trouble free operation. ONLY qualified technicians should service this equipment.
IMPOR T ANT YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPL Y AND THE GAS SUPPL Y BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE T O ALLOW ACCESS FOR CLEANING , ADJUSTING , INST ALLA TION, OR TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety and Health Administration) ST ANDARDS.
W ARNING The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY 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 .
SECTION I SAFETY PRECAUTIONS ......................................................................................................................................... 4 SECTION II SPECIFICA TIONS .......................................................
4 Maytag Co. 1 13395 - 6 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 .
1 13395 - 6 Maytag Co. 5 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.
6 Maytag Co. 1 13395 - 6 M AX I MU M C AP AC I T Y (DR Y WEI G H T ) 120 l b 54. 4 kg BASKET ( T U M BLER ) DI AM ET ER 44 - 5/ 8 ” 1 13. 3 cm BASKET ( T U M BLER ) DEPT H 42 - 1/ 8 ” 170. 0 cm BASKET ( T U M BLER ) VO LU M E 38 . 1 cu f t 1078. 87 L BASKET ( T U M BLER ) M O T O R 3/ 4 h p 0.
1 13395 - 6 Maytag Co. 7 NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation. MDG-120 S pecifications.
8 Maytag Co. 1 13395 - 6 MA X I M U M C A PA C I T Y (D RY WE I GHT ) 1 7 0 l b 77. 1 1 kg T U MBLER DI AM ET ER 5 1 - 1 / 2 ” 130. 81 cm T U M B L E R D E P T H 42- 1/2 ” 107. 95 cm T U M B L E R V O L U M E 51. 20 cu f t 1, 449. 82 L T UMB LE R/D R I V E MOT OR 1 h p 0.
1 13395 - 6 Maytag Co. 9 MD-170 S pecifications NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.
10 Maytag Co. 1 13395 - 6 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 13395 - 6 Maytag Co. 11 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. IMPOR T ANT : The dryer must be installed in a location/environment, which the ambient temperature remains between 40° F (4.
12 Maytag Co. 1 13395 - 6 2. If more headroom is needed when moving dryer into position, the top console (module) may be removed. T o Remove T op 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.
1 13395 - 6 Maytag Co. 13 3. Exhaust T ransition Piece Inside the basket (tumbler) of this dryer is an exhaust transition piece that must be installed on the outlet of the exhaust before any further venting is connected: a . Remove the exhaust transition piece from the basket (tumbler) and place it on the exhaust outlet.
14 Maytag Co. 1 13395 - 6 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 . 40-inches (101.6 cm) for optimum opening of load door . B .
1 13395 - 6 Maytag Co. 15 D. FRESH AIR SUPPL Y 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.
16 Maytag Co. 1 13395 - 6 E. EXHAUST REQUIREMENTS Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork will create excessive back pressure, which re.
1 13395 - 6 Maytag Co. 17 1. Single Dryer V enting IMPOR T ANT : For extended ductwork runs, the cross-sectional area of the ductwork can only be increased to an extent.
18 Maytag Co. 1 13395 - 6 4. Multiple Dryer (Common) V enting IMPOR T ANT : For extended ductwork runs, the cross-sectional area of the ductwork can only be increased to an extent.
1 13395 - 6 Maytag Co. 19 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.
20 Maytag Co. 1 13395 - 6 2. Electrical Service Specifications IMPOR T ANT : Figures shown are for reversing models. M D - 120 G as ELECT R I CAL SER VI CE S PECI FI CAT I O N S (PER DR Y ER ) IMP OR TAN T : NO TES : A. B. C. 208 V AC AN D 230/ 240 V AC AR E N OT T H E SAME.
1 13395 - 6 Maytag Co. 21 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/NFP A NO.
22 Maytag Co. 1 13395 - 6 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.
1 13395 - 6 Maytag Co. 23 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” N. P .
24 Maytag Co. 1 13395 - 6 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 13395 - 6 Maytag Co. 25 IMPOR T ANT : 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.
26 Maytag Co. 1 13395 - 6 H. PREP ARA TION FOR OPERA TION 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.
1 13395 - 6 Maytag Co. 27 I. PREOPERA TIONAL 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.
28 Maytag Co. 1 13395 - 6 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.
1 13395 - 6 Maytag Co. 29 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 .
30 Maytag Co. 1 13395 - 6 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 .
1 13395 - 6 Maytag Co. 31 M. STEAM INFORMA TION (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.
32 Maytag Co. 1 13395 - 6 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.
1 13395 - 6 Maytag Co. 33 4. S team Damper Air System Connections The dryer is manufactured with a pneumatic (piston) damper system, which requires an external supply of compressed air .
34 Maytag Co. 1 13395 - 6 6. S team 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.
1 13395 - 6 Maytag Co. 35 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.
36 Maytag Co. 1 13395 - 6 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.
1 13395 - 6 Maytag Co. 37 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.
38 Maytag Co. 1 13395 - 6 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.
1 13395 - 6 Maytag Co. 39 B. ADJUSTMENTS 7 DA YS AFTER INST ALLA TION AND EVER Y 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.
40 Maytag Co. 1 13395 - 6 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 .
1 13395 - 6 Maytag Co. 41 SECTION VIII DA T A LABEL INFORMA TION When contacting Maytag , certain information is required to ensure proper service/parts information from Maytag . This information is on the data label af fixed to the left side panel/wall area behind the control door .
42 Maytag Co. 1 13395 - 6 SECTION IX REVERSING TIMER SPIN/DWELL ADJUSTMENTS T imer models have an electric reversing timer in the electric service box, which is located in the upper left rear area of the dryer .
1 13395 - 6 Maytag Co. 43 SECTION X 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 .
44 Maytag Co. 1 13395 - 6 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.
1 13395 - 6 Maytag Co. 45 SECTION XI SENSOR ACTIV A TED FIRE EXTINGUISHING (S.A.F .E.) SYSTEM (MICROPROCESSOR MODELS ONL Y) The exclusive fire suppression system will extinguish fires that may start in the drying basket (tumbler).
46 Maytag Co. 1 13395 - 6 OPTIONAL MANUAL BYP ASS Provisions are made in the dryer ’ s fire suppression 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 “three way” fitting located in the outlet supply side of the water solenoid valve.
1 13395 - 6 Maytag Co. 47 W ARNING: If the water in the supply line or water solenoid valve freezes, the fire suppression system will be INOPERA TIVE!! The manual ball cock shutoff valve must be located outside of the dryer at a distance from the dryer where it is easily accessible.
48 Maytag Co. 1 13395 - 6 Once the fire suppression system routine is activated, the microprocessor controller (computer) will display “S.A.F .E. SYSTEM ACTIV A TED” and water will be injected into the basket (tumbler) chamber .
1 13395 - 6 Maytag Co. 49 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.
Part No. 113395 6 - 05/01/07 - 0.
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