MDG-30 Fast Dry Installation and Operator’s Manual 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. AVERTISSEMENT: Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum le risque dincendie ou dexplosion ou pour éviter tout dommage matériel, toute blessure ou la mort.
Retain This Manual In A Safe Place For Future Reference Our 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 properly trained and competent technicians should service this equipment. OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/operator's manual included with the dryer.
IMPORTANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and 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 and SCREEN IN PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED. IMPORTANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and specified in the installation and operator's manual included with the dryer.
Table of Contents SECTION I IMPORTANT INFORMATION ............................................................................... 3 A. RECEIVING and HANDLING ....................................................................................................... 3 B. SAFETY PRECAUTIONS .............................................................................................................. 4 SECTION II SPECIFICATIONS ......................................................................................
C. LUBRICATION ............................................................................................................................. 36 SECTION VII TROUBLESHOOTING ............................................................................................ 37 SECTION VIII TECHNICAL INFORMATION ............................................................................... 44 A. DATA LABEL ...............................................................................................................
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, packaging and wooden skid should be visually inspected for shipping damage. If any damage whatsoever is noticed, inspect further before delivering carrier leaves. Dryers damaged in shipment: 1.
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. 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 dry mop heads. Contamination by wax or flammable solvent will create a fire hazard. WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or similarly textured rubberlike materials. Drying in a heated basket (tumbler) may damage plastics or rubber and also may be a fire hazard. 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust duct work, and area around the back of the dryer.
SECTION II SPECIFICATIONS A. SPECIFICATIONS Super 30 0$;,080 &$3$&,7< '5< :(,*+7 OEV NJ %$6.(7 7 ',$0(7(5 FP %$6.(7 7 '(37+ FP %$6.(7 7 02725 +3 NZ +3 NZ 80%/(5 80%/(5 80%/(5 '225 23(1,1* ' FP %$6.(7 92/80( FX IW FX P $3352; :(,*+7 8 OEV NJ $3352; :(,*+7 & OEV NJ ,$0(7(5 1&5$7(' 5$7(' '5<(56 3(5 758&. '5<(56 3(5 758&.
Specifications MDG-30 Fast Dry NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or obligation.
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: National Fuel Gas Code ANSI.Z223.1-LATEST EDITION or National Electric Code ANSI/NFPA NO. 70LATEST EDITION or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGAB149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P.
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-B149.1M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas). 1. The dryer must be installed on a sound level floor capable of supporting its weight.
C. DRYER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of twelve (12) inches above the dryer's outer top; except along the front of the dryer which may be closed if desired. NOTE: Allowances must be made for opening the control door. X = 12" minimum, 24" suggested for ease of maintenance. NOTE: Air considerations are important for proper and efficient operation. Dryers may be positioned side wall to side wall.
D. FRESH AIR SUPPLY The MDG-30 Fast Dry air supply (makeup air) must be given careful consideration to assure 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 is required for each dryer. If registers or louvers are installed over the openings, then the area must be increased. It is not necessary to have a separate makeup air openings for each dryer.
E. EXHAUST REQUIREMENTS Exhaust duct work should be designed and installed by a qualified professional. Improperly sized duct work 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-limit, or lint chamber hi-heat protector thermostat. Where possible, it is suggested to provide a separate (single) exhaust duct for each dryer.
SINGLE DRYER VENTING IMPORTANT: For exhaust duct runs over 30 feet a minimum size of 12 inches must be used. HORIZONTAL VENTING When horizontal single 10-inch venting is used, the duct work to the outlet cannot exceed 30 feet (refer to Illus. A below). This calculation of 30 feet compensates or allows for the use of a maximum of only one (1) elbow. Illus.
VERTICAL VENTING When vertical single venting is used minimum duct size is 12 inches (refer to Illus. B below), the duct work from the dryer to the outside outlet cannot exceed 60 feet (refer to Illus. B below). 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. Illus.
MULTIPLE DRYER (Common) VENTING HORIZONTAL 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 the airflow. No more than four (4) dryers should be connected to one (1) main common duct run.
Illus. C (refer to the previous page 15}) shows the minimum cross-section area for horizontal multiple dryer venting. These figures must be increased in proportion if the main duct run from the last dryer to where it exhausts has numerous elbows or is unusually long. IMPORTANT: For extended duct work runs, the cross-section area of the duct can only be increased to an extent. For extended duct work runs, a professional HVAC firm should be consulted for proper venting information. VERTICAL VENTING ILLUS.
IMPORTANT VENTING REMINDERS 1. Duct work size and installation should be done by a qualified professional. 2. The dryer must be exhausted to the outdoors. 3. Duct work should be routed as short as possible to the outdoors with as few elbows as possible. 4. Avoid 90° turns, use 30° or 45° turns instead. 5. The size of the duct work must be a minimum of 12 inches if vented vertically and 10 inches if vented horizontally. 6.
F. ELECTRICAL INFORMATION 1. Electrical Requirements It is your responsibility to have ALL electrical connections made by a properly licensed and competent electrician to assure that the electrical installation is adequate and conforms with local and state regulations or codes. In the absence of such codes, ALL electrical connections, material, and workmanship must conform to the applicable requirements of the National Electrical Code ANSI/NFPA NO.
NOTE: Component failure due to improper voltage application will VOID THE WARRANTY. 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 Electric Code ANSI/NFPA NO. 70-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 (L.P. Gas).
6,1*/( 3+$6( (/(&75,&$/ &211(&7,216 /($'6 %ODFN 3RVLWLYH :KLWH 1HXWUDO *UHHQ *URXQG RU / If local codes permit, power to the dryer can be made by the use of a flexible U.L. listed power cord or pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired directly to the service breaker panel. In both cases, a strain relief must be installed where the wiring enters the dryer.
5. 3-Phase (3ø) Wiring Connections and Hookup The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, L3, and some times Neutral) and ground. Single-phase (1ø) the dryer. No single-phase (1ø) input connection is required on a 3-phase (3ø) dryer. IMPORTANT: A CIRCUIT SERVING EACH DRYER MUST BE PROVIDED. a.
M DG-30 FAST DRY (G AS) (/(&75,&$/ 6(59,&( 63(&,),&$7,216 3(5 '5<(5 ,03257$17 9$& DQG 9$& $5( 127 7+( 6$0( :KHQ RUGHULQJ VSHFLI\ H[DFW YROWDJH 127(6 $ )XVH UDWLQJV DUH GXDO HOHPHQW WLPH GHOD\ FXUUHQW OLPLWLQJ FODVV 5. RU 5.
G. GAS INFORMATION It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the gas plumbing installation is adequate and conforms with 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 installation must conform to applicable Canadian Standards: CAN/CGA-B149.
2. Technical Gas Data a. Gas Specifications TYPE 1 0DQLIROG 3UHVVXUH ,QOLQH 3UHVVXUH OF GAS / $785$/ ,48,' 3 523$1( LQFKHV : & LQFKHV : & LQFKHV : & LQFKHV : & 0HDVXUHG DW RXWOHW VLG H R I JDV YDOYH SUHVVXUH WDS ZKHQ JDV YDOYH LV R Q b. Gas Connections Inlet connection ------------ 3/4" inch N.P.T. Inlet supply size ------------ 3/4" inch N.P.T.
3. Piping Connections ALL components and materials must conform to National or Canadian Gas Code specifications. It is important that gas pressure regulators meet applicable pressure requirements and that gas meters be rated for the total amount of ALL the appliance BTU's being supplied. The dryer is provided with a 3/4" N.P.T. inlet pipe connection located in the upper rear area of the dryer. The minimum pipe size (supply line) to the dryer is 3/4" N.P.T.
Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch pipe gas loop be installed in the supply line serving 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 of water column pressure. Refer to the illustrations on the previous page (page 25). NOTE: A water column test pressure of 3.5 inches for natural gas and 10.5 inches for L.P.
H. PREPARATION FOR OPERATION and START-UP 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 affixed to the back side of the top front control and service door. 3. Check to assure that the dryer is connected to the type of heat or gas indicated on the dryer data label. 4.
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.
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 assure that no further adjustments are necessary and that ALL components are functioning properly. IMPORTANT: The dryer basket (tumbler) is treated with a protective coating.
NOTES: 1. If the Anti-Wrinkle program is active, the L.E.D. (light emitting diode) display will continue to read "donE", and the microprocessor controller (computer) will proceed through the Anti-Wrinkle program until the maximum "Active Guard Time" has expired or until the door is opened, whichever comes first. The L.E.D. (light emitting diode) display will read "FILL" and/or "Amount to Start." 2. If the Anti-Wrinkle program is not active or in use, the L.E.D.
b. Select Temperature The dryer will start, the L.E.D. (light emitting diode) display will read the temperature cycle selected, and the drying time portion of the L.E.D. (light emitting diode) display will read "00" and count upward as time elapses, or the vended time will count downward, depending on the program parameter setting. IMPORTANT: If the door is opened during a cycle, both the heat and motor will stop.
2) Press the "E" on the touchpad of the keyboard. 3) The L.E.D. (light emitting diode) display will quickly show "Ld30," "LC04," "F180." The dryer will start, and the L.E.D. (light emitting diode) display will show "dr30." b. Dual Timer Dryers 1) Turn drying timer knob for a time of 20 minutes. 2) Select "High Temp." 3) Push "Push To Start" switch. 4) To stop dryer, open the main door. K.
SECTION IV SERVICE and 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 distributor from whom the Maytag Co. equipment was purchased. If the distributor cannot be contacted or is unknown, contact the Maytag Co. Customer Service Department for a distributor in your area. NOTE: When contacting the Maytag Co.
SECTION V WARRANTY INFORMATION A. RETURNING WARRANTY CARDS 1.Before any dryer leaves the manufacturer, a warranty card is affixed to the glass of the main door. These warranty cards are intended to serve the customer as a record installation date of that specific dryer so as to extend the customer's warranty period. IMPORTANT: A separate warranty card must be completed and returned for each individual dryer. NOTE: Be sure to include the installation date when returning warranty cards. 2.
SECTION VI ROUTINE MAINTENANCE A. CLEANING A program or schedule should be established for periodic inspection, cleaning, and removal of lint from various areas of the dryer, as well as throughout the duct work 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 air flow.
90 DAYS Inspect and remove lint accumulation in customer-furnished exhaust duct work system from dryer's internal exhaust ducting. WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK 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 TROUBLESHOOTING IMPORTANT: 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. The information provided will help isolate the most probable components associated with the difficulty described.
3. Failed microprocessor controller (computer). C . Drive motor operates okay for a few minutes, and then stops and will not restart 1. Motor is overheating and tripping out on internal overload protector a. Motor air vents clogged with lint. b. Low voltage to the motor. c. Failed motor. d. Basket (tumbler) is binding, check for obstruction. e. Failed idler bearings or tumbler bearings. f. Failed (out of balance) impellor (fan). D. Blower motor not operating (does not start) 1.
b. Failed microprocessor controller (computer). c. Broken wire or connection somewhere between the microprocessor controller (computer) and the microprocessor temperature sensor. H. Microprocessor controller (computer) display reads "door" 1. Fault (open circuit) in door switch circuit a. Failed main door switch. b. Broken connection or wire in main door circuit. 2. Failed 24 VAC transformer. I. Microprocessor controller (computer) will not accept any keyboard entries, i.e., L.E.D.
a. Lint screen dirty. b. Restriction in exhaust duct work. 3. Insufficient makeup air. 4. Failed ignitor and flame-probe assembly. 5. Failed Direct Spark Ignition (DSI) module. 6. Failed gas valve. N. Heating unit is not operating (no heat) and heat indicator dot is on 1. Fault in sail switch circuit a. Sail switch is out of adjustment or has failed. b. Sail switch damper is not closing or is fluttering 1) Lint screen is dirty. 2) Restriction in exhaust. 2. Fault in burner hi-limit circuit or thermostat.
6. Lint screen not being cleaned on a regular basis or often enough. 7. Extractors (washers) not performing properly. 8. Sail switch is fluttering, restriction in exhaust. 9. Failed microprocessor controller (computer), temperature calibration is inaccurate. 10. Failed microprocessor temperature sensor, calibration is inaccurate. 11. Failed burner or oven hi-limit. 12. Failed lint compartment hi-limit. P. Condensation on main door glass 1. Too long, undersized, or improperly installed duct work. 2.
S. Main burners are burning with a yellow flame 1. Burner air shutters are out of adjustment. 2. Insufficient makeup air. 3. Dust or lint in burner. 4. Insufficient gas pressure. MECHANICAL COIN MODELS A. Heating unit not operating (ALL temperature selections) 1. Fault in sail switch circuit a. Sail switch out of adjustment or failed. b. Sail switch not closing or fluttering 1) Check blower (impellor/fan) motor and rotation direction. 2) Restriction in location exhaust system. 2.
8. Gas supply may have low heating value 9. Sail switch is fluttering a. Restriction in location exhaust system. 10. Exceptionally cold, humid or low barometric pressure atmosphere. 11. Blower (impellor and fan) motor rotation direction is incorrect. (3 phase models only) D. Dryer is cycling on hi-limit thermostat 1. Blower (impellor and fan) motor failure. 2. Blower (impellor and fan) motor rotation direction is incorrect. (3 phase models only.) 3. Insufficient makeup air. 4.
SECTION VIII TECHNICAL INFORMATION A. DATA LABEL Contact Maytag Company When contacting the Maytag Co. certain information is required to ensure proper service and parts information from the manufacturer. This information is on the data label located on the inside of the control door. When contacting the Maytag Co. please have the model and serial numbers available.
THE DATA LABEL 1. MODEL DRYER The model number is a Maytag number which describes the size of the dryer and the type of heat. 2. SERIAL NUMBER The serial number allows the manufacturer to gather information on your particular dryer. 3. MANUFACTURING CODE NUMBER The manufacturing code number is a number issued by manufacturer which describes ALL possible options on your particular model. 4.
SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor (computer) Board a. Upon completing installation of the replacement microprocessor (computer) board, reestablish power to the dryer. b. Start the drying cycle. c. Verify that the motors and the heat indicator dots, in the microprocessor (computer) L.E.D. (light emitting diode) display are on. (Refer to the illustration below.) d.
e. Open main door. The dryer must stop and ALL output indicator lights on the back side of the microprocessor (computer) board must go out. (Refer to illustration on previous page [page 46].) f. Try to restart the dryer with the main door open. g. The microprocessor (computer) board's L.E.D. display must read "DOOR." h. Close the main door and restart the dryer. i. Functional check of microprocessor (computer) board is complete. 2. Direct Spark Ignition (DSI) System a.
MAYTAG-113069 1-01/29/99-250