MDG50PCC Installation Manual
50 lb Single Pocket / Phase 7 / Coin
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.
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.
—Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables à proximité de cet
appareil ou de tout autre appareil.
— WHATTO DO IF YOU SMELL GAS:
—QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ:
●
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
●
●
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
●
supplier, call the fire department.
●
fournisseur de gaz, appelez le service
des incendies.
— Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
—L’installation et l’entretien doivent être
assurés par un installateur ou un
service d’entretien qualifié ou par le
fournisseur de gaz.
RETAIN THESE
INSTRUCTIONS IN A
SAFE PLACE FOR
FUTURE REFERENCE
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State of California Proposition 65 Warnings:
WARNING: This product contains a chemical known to the State of California to cause
cancer.
WARNING: This product contains a chemical known to the State of California to cause
birth defects or other reproductive harm.
IMPORTANT
YOU MUSTDISCONNECTAND LOCK OUTTHE ELECTRIC SUPPLYANDTHE 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 HealthAdministration) STANDARDS.
“Caution: Label all wires prior to
disconnection when servicing
controls. Wiring errors can cause
improper operation.”
«Attention:Au moment de l’entretien des commandes,
étiquetez tous les fils avant de les débrancher. Des
erreurs de câblage peuvent entraîner un fonctionnement
inadéquat et dangereux.»
CAUTION
DRYERS SHOULD NEVER BE LEFT UNATTENDEDWHILE IN OPERATION.
WARNING
CHILDREN SHOULD NOTBEALLOWED TO PLAYON OR NEAR THE DRYER(S).
CHILDREN SHOULD BE SUPERVISED IFNEAR DRYERS IN OPERATION.
FORYOUR SAFETY
DO NOT DRYMOPHEADS INTHE DRYER.
DO NOT USE DRYER INTHE PRESENCE OF DRYCLEANING FUMES.
WARNING
UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, or
heat safety circuit ever be disabled.
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WARNING
The dryer must never be operated with any of the back guards, outer tops, or service
panels removed. PERSONALINJURYOR FIRE COULD RESULT.
WARNING
DRYER MUST NEVER BE OPERATED WITHOUTTHE LINT FILTER/SCREEN IN
PLACE, EVEN IFAN EXTERNALLINT COLLECTION SYSTEM IS USED.
IMPORTANT
PLEASE OBSERVEALLSAFETYPRECAUTIONS displayed on the equipment and/or
specified in the installation manual included with the dryer.
Dryer must not be installed or stored in an area where it will be exposed to water or weather.
The wiring diagram for the dryer is located in the front electrical control box area.
IMPORTANT
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).
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Table of Con t en t s
SECTION I
SAFETY PRECAUTIONS .................................................................................................................. 2
SECTION II
SPECIFICATIONS.............................................................................................................................. 4
SECTION III
A. Unpacking/Setting Up............................................................................................................................. 6
B. Location Requirements........................................................................................................................... 6
C. Dryer Enclosure Requirements .............................................................................................................. 7
D. FreshAir Supply Requirements .............................................................................................................. 8
E. Exhaust Requirements ............................................................................................................................ 9
F. Electrical Information ........................................................................................................................... 12
G. Gas Information .................................................................................................................................... 14
H. Preparation for Operation/Start-Up...................................................................................................... 17
I. Preoperational Tests ............................................................................................................................. 18
J. Preoperational Instructions ................................................................................................................... 19
K. Shutdown Instructions .......................................................................................................................... 19
SECTION IV
A. Service .................................................................................................................................................. 20
B. Parts...................................................................................................................................................... 20
SECTION V
WARRANTYINFORMATION ....................................................................................................... 21
A. Returning Warranty Cards ................................................................................................................... 21
B. Warranty ............................................................................................................................................... 21
SECTION VI
ROUTINE MAINTENANCE........................................................................................................... 22
A. Cleaning ................................................................................................................................................ 22
B. Adjustments .......................................................................................................................................... 23
C. Lubrication ............................................................................................................................................ 23
D. Lint Drawer Removal........................................................................................................................... 24
SECTION VII
DATALABELINFORMATION ...................................................................................................... 25
SECTION VIII
PROCEDURE FOR FUNCTIONAL CHECK
OF REPLACEMENT COMPONENTS........................................................................................... 26
SECTION IX
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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. PERSONALINJURY 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. Purchaser and user should consult the local gas supplier for proper instructions to be followed in the event
the user smells gas. The instructions should be posted in a prominent location.
3. WHAT TO DO IF YOU SMELL GAS:
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area of ALL occupants.
e. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
f. If you cannot reach your gas supplier, call the fire department.
4. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
5. Dryers must be exhausted to the outdoors.
6. Although Maytag produces a very versatile dryer, there are some articles that, due to fabric composition or
cleaning method, should not be dried in it.
WARNING: Dry only water washed fabrics. DO NOT dry articles spotted or washed in dry
cleaning solvents, a combustible detergent, or “all purpose” cleaner.
EXPLOSION COULD RESULT.
WARNING: DO NOT dry rags or articles coated or contaminated with gasoline, kerosene, oil, paint,
or wax. EXPLOSION COULD RESULT.
WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will create a
fire hazard.
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.
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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.
WARNING: The collection of lint in the burner area and exhaust ductwork can create a potential fire
hazard.
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the
National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the Canadian Electrical
Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
NOTE: Failure to electrically ground the dryer properly will VOID THEWARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, lint drawer switch, or heat safety circuit
ever be disabled.
WARNING: PERSONALINJURYOR FIRE COULD RESULT SHOULD THE DRYER
DOOR SWITCH, LINT DRAWER SWITCH, OR HEAT SAFETYCIRCUIT
EVER BE DISABLED.
10. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
11. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING: Articles left in the dryer after the drying and cooling cycles have been completed can
create a fire hazard.
12. READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE
DRYER.
13. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than sixty-six percent (66%) 33 lb (14.96 kg) of its rated capacity.
WARNING: YOU MUST DISCONNECTAND LOCK OUTTHE ELECTRIC SUPPLY
AND THE GAS SUPPLYOR THE STEAM SUPPLYBEFOREANYCOVERS
OR GUARDSARE REMOVED FROM THE MACHINE TOALLOW
ACCESS FOR CLEANING,ADJUSTING, INSTALLATION, OR TESTINGOF
ANYEQUIPMENT PER OSHA (Occupational Safety and HealthAdministration)
STANDARDS.
IMPORTANT: 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).
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SECTION II
SPECIFICATIONS
22.7 kg
83.2 cm
MAXIMUM CAPACITY (DRY WEIGHT)
50 lbs
32-3/4”
37-1/2”
3/4 hp
BASKET (TUMBLER) DIAMETER
BASKET (TUMBLER) DEPTH
BASKET (TUMBLER) MOTOR
DOOR OPENING (DIAMETER)
BASKET (TUMBLER) VOLUME
DRYERS PER 20’/40’ CONTAINER
DRYERS PER 45’/48’ TRUCK
VOLTAGE AVAILABLE
95.3 cm
0.560 kW
54.61 cm
0.518 cu m
21-1/2”
18.3 cu ft
10/20
24/26
120v 1ø 60 Hz
295.3 kg
APPROX. WEIGHT (UNCRATED)
APPROX. WEIGHT (CRATED)
HEAT INPUT
651 lbs
700 lbs
317.7 kg
37,800 kcal/hr
21 cmm
150,000 Btu/hr
750 cfm
AIRFLOW
INLET PIPE CONNECTION
1/2” M.N.P.T.*
Shaded areas are stated in metric equivalents
3/29/04
*
Size of piping to dryer varies with installation conditions. Contact factory for assistance.
NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or
obligation.
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SPECIFICATIONS – GAS ONLY
NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or
obligation.
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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 applicableAmerican 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 & 2 CSAC22.1-1990 or LATEST EDITION
(for Electrical Connections).
A. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer.
IMPORTANT: Dryer must be transported and handled in an upright position at ALL times.
The dryer can be moved to its final location while still attached to the skid or with the skid removed. To unskid
the dryer, locate and remove the four (4) bolts securing the base of the dryer to the wooden skid. Two (2) are
at the rear base (remove the back panel for access), and two (2) are located in the bottom of the lint chamber.
To remove the two (2) bolts located in the lint chamber area, remove the lint drawer.
With the skid removed, to make it easier to slide the dryer into its final position, slightly lower ALL four (4)
leveling legs, so that the dryer will slide on the legs instead of the base frame.
Leveling Dryer
The dryer is equipped with four (4) leveling legs, one (1) at each corner of the base. Two (2) are located at the
rear of the dryer base, and two (2) are located in the lint chamber (coop). To increase bearing life and improve
efficiency, the dryer should be tilted slightly to the rear.
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-B149.1-
M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for General Installation and
Gas Plumbing).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “The dryer must be installed on noncombustible floors only.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. The dryer is for use in noncombustible locations.
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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. The dryer must be installed with a proper exhaust duct connection to the outside as noted in this manual
(refer to Exhaust Requirements in Section E).
8. Dryer must be located in an area where correct exhaust venting can be achieved as noted in this manual
(refer to Exhaust Requirements in Section E).
IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will be necessary.
9. The dryer must be installed with adequate clearance for air openings into the combustion chamber.
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: 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).
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials. A minimum of 12-inches (30.48 cm)
above the dryer’s outer top is required, except along the front of the dryer. (18-inches [45.72 cm] or more is
recommended for ease of installation, maintenance, and service.) The bulkhead facing, along the front of the
dryer, will require a 1-inch (2.54 cm) clearance from the outer top. The bulkhead header may be a minimum of
4-inches (10.16 cm) above the dryer’s outer top and must not extend more than 4-inches (10.16 cm) to the rear.
NOTE: Allowances must be made for opening the control door.
NOTE: With the exception of the floor, clearances shown are for combustible construction.
X = 12-inch (30.48 cm) minimum, 24-inches (60.96 cm) is suggested for ease of maintenance.
*
1-inch (2.54 cm) maximum for electric dryers.
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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 page 7 for details.
D. FRESH AIR SUPPLY REQUIREMENTS
The air supply (make-up air) must be given careful consideration to ensure proper performance of 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 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 separate make-up air openings for each dryer. Common
make-up air openings are acceptable. However, they must be set up in such a manner that the make-up air is
distributed equally to the dryers. The dryer must be installed with provisions for adequate combustion and
make-up air supply.
EXAMPLE: For a bank of eight (8) dryers, two (2) unrestricted openings measuring 3 feet by 2 feet (0.914
meters by 0.61 meters) are acceptable.
IMPORTANT: Make-up air openings should not be located in an area directly near where exhaust
vents exit the building.
Allowances must be made for remote or constricting passageways or where dryers are located at excessive
altitudes or predominantly low-pressure areas.
IMPORTANT: Make-up air must be provided from a source free of contaminating fumes such as dry
cleaning solvent fumes. Make-up air that is contaminated by dry cleaning solvent
fumes will result in irreparable damage to the motors and other dryer components.
NOTE: Component failure due to dry cleaning solvent fumes willVOIDTHEWARRANTY.
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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.
When possible, it is suggested to provide a separate (single) exhaust duct for each dryer.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCTWORK CAN
CREATE APOTENTIAL FIRE HAZARD.
The exhaust ductwork should be laid out in such a way that the ductwork travels as directly as possible to the
outdoors with as few turns as possible. Single or independent dryer venting is recommended.
It is suggested that the use of 90° turns be avoided; use 30° or 45° angles instead.
The ductwork should be smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the ducts to be added should overlap the duct to which it is connected.
ALL ductwork joints must be taped to prevent moisture and lint from escaping into the building. Additionally,
inspection doors should be installed at strategic points in the exhaust ductwork for periodic inspection and
cleaning.
NOTE: When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible
materials, the opening must be 2-inches (5.08 cm) larger than the duct (all the way around).
The duct must be centered within this opening.
To protect the outside end of the horizontal ductwork from the weather, a 90° elbow bent downward should be
installed where the exhaust exits the building. If the ductwork travels vertically up through the roof, it should be
protected from the weather by using a 180° turn to point the opening downward. In either case, allow at least
twice the diameter of the duct between the duct opening and the nearest obstruction (i.e., roof or ground level).
IMPORTANT: DO NOT use screens, louvers, or caps on the outside opening of the exhaust
ductwork.
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must be
no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column (W.C.).
IMPORTANT: It is recommended that exhaust or booster fans not be used in the exhaust ductwork
system.
IMPORTANT: For ductwork runs that exceed what is stated in this manual a professional heating,
ventilating, and air-conditioning (HVAC) firm should be consulted for proper venting
information.
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 26
gauge (0.0195-inches [0.50 mm]) thick.”
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NOTE: Ductwork should be laid out in such a manner where allowances are made at rear area of the
dryer for removal of rear service panels or guards.
SINGLE DRYER VENTING
HORIZONTAL VENTING
When a single 8-inch (20.32 cm) horizontal vent is used, the ductwork to the outlet cannot exceed 20 feet
(6.1 meters), refer to Illus. A below. This calculation of 20 feet (6.1 meters) compensates or allows for the use
of a maximum of only one (1) elbow (which is the outside outlet protection).
Illus. A
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must
be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column (W.C.).
VERTICAL 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.
Illus. B
JEV 04/12/02
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MULTIPLE DRYER (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 the airflow.
The main duct should be tapered with the diameter increasing before each individual 8-inch (20.32 cm) duct is
added (refer to Illus. C for horizontal venting and Illus. D for vertical venting).
IMPORTANT: No more than four (4) dryers maximum should be connected to one (1) main
common duct.
Refer to the illustrations below for Multiple Dryer Horizontal Venting and Vertical Venting examples/
illustrations.
HORIZONTAL VENTING
Illus. C
VERTICAL VENTING
Illus. D
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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 CodeANSI/NFPANO. 70-LATEST EDITION or in
Canada, the Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
IMPORTANT: Failure to comply with these codes or ordinances, and/or the requirements stipulated
in this manual can result in personal injury or component failure.
NOTE: Component failure due to improper installation will VOID THEWARRANTY.
Each dryer should be connected to an independently protected branch circuit. The dryer must be connected
with copper wire only. DO NOT use aluminum wire; it could create a fire hazard. The copper
conductor wire/cable must be of proper ampacity and insulation in accordance with electric codes for
making ALL service connections.
NOTE: The use of aluminum wire willVOIDTHEWARRANTY.
IMPORTANT: Aseparate protected circuit must be provided to each dryer.
NOTE: An individual ground circuit must be provided to each dryer, do not daisy chain.
IMPORTANT: The dryer must be connected to the electric supply shown on the data label.
IMPORTANT: The wire size must be properly sized to handle the related current.
WARNING: Any damage done to dryer components due to improper voltage connections will
automatically VOIDTHEWARRANTY.
NOTE: Manufacturer reserves the right to make changes in specifications at any time without notice or
obligation.
2. Electrical Service Specifications
GAS
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)
NOTES: A.
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.
B. Circuit breakers are thermal-magnetic (industrial) motor curve type ONLY.
For others, calculate/verify correct breaker size according to appliance
amp draw rating and type of breaker used.
APPROX.
AMP DRAW
SERVICE
VOLTAGE
WIRE
SERVICE
CIRCUIT
BREAKER
PHASE
60 Hz
50 Hz
120
1ø
2
12.0
—
20
9/23/08
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IMPORTANT: Figures shown are for non-reversing models only. For reversing models contact the
factory.
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 & 2 CSA C22.1-1990 or LATEST EDITION. The ground
connection may be to a proven earth ground at the location service panel.
For added personal safety, when possible, it is suggested that a separate ground wire (no. 18 minimum) be
connected from the ground connection of the dryer to a grounded cold water pipe. DO NOT ground to a gas
pipe or hot water pipe. The grounded cold water pipe must have metal-to-metal connection ALL the way to the
electrical ground. If there are any nonmetallic interruptions, such as, a meter, pump, plastic, rubber, or other
insulating connectors, they must be jumped out with no. 4 copper wire and securely clamped to bare metal at
both ends.
IMPORTANT: For personal safety and proper operation, the dryer must be grounded.
Provisions are made for ground connection in each dryer at the electrical service connection area.
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 relief must be installed where the wiring enters the dryer.
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.
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FOR 110VAPPLICATIONS
Single-Phase Electrical Lead Connections
White or Red
Black
+
Positive
Green
+
Ground
+
Neutral
or L2
A ground lug is provided in the rear electrical box to connect your
service ground.
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 CodeANSI 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.
IMPORTANT: Failure to comply with codes or ordinances, and/or requirements in this manual, can
result in personal injury and improper operation of the dryer.
The dryer and its individual shutoff valves 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). The dryer must be isolated
from the gas supply piping system by closing its individual manual shutoff valve during any pressure test of the
gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).
IMPORTANT: Failure to isolate or disconnect the dryer from supply as noted can cause irreparable
damage to the gas valve, which will VOID THEWARRANTY.
WARNING: FIRE OR EXPLOSION COULD RESULT DUE TO FAILURE OF
ISOLATINGOR DISCONNECTINGTHE GAS SUPPLYAS NOTED.
1. Gas Supply
The gas dryer installation must meet the American National Standard...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 (L.P. Gas) or LATEST EDITION, as well as local codes and ordinances
and must be done by a qualified professional.
NOTE: Undersized gas piping will result in ignition problems, slow drying, increased use of energy, and
can create a safety hazard.
The dryer must be connected to the type of heat/gas indicated on the dryer data label. If this information
does not agree with the type of gas available, DO NOT operate the dryer. Contact the dealer who sold
the dryer or contact the Maytag Co.
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IMPORTANT: Any burner changes or conversions must be made by a qualified professional.
The input ratings shown on the dryer data label are for elevations up to 2,000 feet (610 meters), unless
elevation requirements of over 2,000 feet (610 meters) were specified at the time the dryer order was
placed with the factory. The adjustment or conversion of dryers in the field for elevations over 2,000 feet
(610 meters) is made by changing each burner orifice. If this conversion is necessary, contact the dealer
who sold the dryer or contact the Maytag Co.
2. Technical Gas Data
a. Gas Specifications
TYPE OF GAS
NATURAL
LIQUID PROPANE
8.7 mb
26.1 mb
27.4 mb
Manifold Pressure*
In-Line Pressure
3.5 inches W.C.
10.5 inches W.C.
11.0 inches W.C.
14.92 - 29.9 mb
6.0 - 12.0 inches W.C.
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 kcal/hr)
1) Natural Gas
Regulation is controlled by the dryer’s gas valve’s internal regulator. Incoming supply pressure
must be consistent between a minimum of 6.0 inches (14.92 mb) and a maximum of 12.0 inches
(29.9 mb) water column (W.C.) pressure.
2) Liquid Propane (L.P.) Gas
Dryers made for use with L.P. gas have the gas valve’s internal pressure regulator blocked open so
that the gas pressure must be regulated upstream of the dryer. The pressure measured at each
gas valve pressure tap must be a consistent 10.5 inches (26.1 mb) water column. There is no
regulator or regulation provided in an L.P. dryer. The pressure must be regulated at the source
(L.P. tank) or an external regulator must be added to each dryer.
Liquid
Propane
Conversion Kit
Part Number
TYPE OF GAS
Natural
Liquid Propane
kcal/hr
Rating
Btu/hour
Rating
Qty. D.M.S.* Part No. Qty. D.M.S.* Part No.
37,800
150,000
3
#29
140820
3
#46
140806
883325
Shaded area is stated in metric equivalent
* Drill Measurement Size (D.M.S.) equivalents are as follows:
Natural Gas ..................... #29 = 0.1360” (3.4540 mm).
Liquid Propane Gas ........ #46 = 0.810” (2.0574 mm).
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3. Piping Connections
ALL components/materials must conform to National Fuel Gas Code SpecificationsANSI 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. 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 being supplied.
The dryer is provided with a 1/2” N.P.T. inlet pipe connection extending out the back area of the burner
box. The minimum pipe size (supply line) to the dryer is 1/2” diameter. For ease in servicing, the gas supply
line of each dryer must have its own shutoff valve.
The size of the main gas supply line (header) will vary depending on the distance this line travels from the
gas meter or, in the case of L.P. gas, the supply tank, other gas-operated appliances on the same line, etc.
Specific information regarding supply line size should be determined by the gas supplier.
NOTE: Undersized gas supply piping can create a low or inconsistent pressure, which will result in
erratic operation of the burner ignition system.
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.) pressure. (Refer to the illustrations above.)
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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.
IMPORTANT: Test ALL connections for leaks by brushing on a soapy water solution (liquid
detergent works well).
WARNING: NEVER TEST FOR LEAKS WITHA FLAME!!!
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 test of the gas supply system at test pressures equal to or less
than 1/2 psig (3.5 kPa).
H. PREPARATION FOR OPERATION/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.
3. GAS MODELS – check to ensure that the dryer is connected to the type of heat/gas indicated on the
dryer data label.
4. GAS MODELS – the sail switch damper assembly was installed and adjusted at the factory prior to
shipping. However, each sail switch adjustment must be checked to ensure that this important safety
control is functioning.
5. Check bolts, nuts, screws, terminals, and fittings for tightness and security.
6. GAS MODELS – be sure that ALL gas shutoff valves are in the open position.
7. Check that ALL back guard panels and service box covers have been replaced.
8. Check the lint drawer to ensure that it is closed and secured in place.
9. Rotate the basket (tumbler/drum) by hand to be sure it moves freely.
10. Check basket (tumbler) bearing setscrews to ensure that they are ALL tight.
11. Check vent is connected to the dryer and is exhausted to the outdoors.
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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. When a gas dryer is first started (during initial start-up), it has a tendency not to ignite on the first ignition
attempt. This is because the gas supply piping is filled with air, so it may take a few minutes for the air to
be purged from the lines.
NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open.
NOTE: Gas model dryers are equipped with an ignition system, which has internal diagnostics. If
ignition is not established after one (1) time, the heat circuit in the ignition module will attempt
two (2) more ignitions (total of three [3] ignition attempts). If there is no flame after the third
ignition attempt, the module will lock out until it is manually reset. To reset the ignition system,
open and close the main door and restart the dryer.
A gas pressure test should be taken at the gas valve pressure tap of each dryer to ensure that the water
column pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at the pressure tap of the gas valve body):
Natural Gas---------------------- 3.5 Inches (8.7 mb) Water Column
Liquid Propane (L.P.) Gas ----- 10.5 Inches (26.1 mb) Water Column
IMPORTANT: There is no regulator provided in an L.P. dryer. The water column pressure must be
regulated at the source (L.P. tank), or an external regulator must be added to each
dryer.
4. Make a complete operational check of ALL safety related circuits:
a. Door Switch(es)
b. Hi-Limit Thermostats
c. Cycling Thermostat
d. Sail Switch
NOTE: The sail switch can be checked for proper operation by opening the lint drawer. While pushing
the lint drawer switch in, start a drying cycle. The heating unit should not activate (wait
30-seconds). If heat does activate, make the necessary adjustments to the sail switch.
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.
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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. We suggest dampening old garments or cloth material
with a solution of water and nonflammable mild detergent and tumbling them in the basket (tumbler) to remove
this coating.
J. PREOPERATIONAL INSTRUCTIONS
Microprocessor Controller (Computer)
1. When the microprocessor controller (computer) is in the ready state, the liquid crystal display (L.C.D.)
screen will display “Ready, Insert $XX.XX (amount) to Start.”
2. Insert coin(s). Once the correct “Amount To Start” has been inserted, the L.C.D. will display “Select
Temperature.”
3. Select temperature by pressing “HI,” “MED,” or “LO.” The cycle will start and the L.C.D. will display the
Dry Cycle selected and the remaining time.
4. The dryer will continue through the drying and cooling cycles, until the vended time has expired.
NOTE: To stop dryer, open main door or press the pause key. Continuation of the cycle will resume
only after the door has been closed and any of the three (3) temperature selections is pressed.
5. Upon completion of drying and cooling cycles, the tone (buzzer) will sound and the dryer will go into the
Anti-Wrinkle mode for 99 minutes, or until the main door has been opened.
IMPORTANT: For more detailed information regarding the microprocessor controller (computer) on
your dryer, refer to the MPUser’s manual included with the dryer.
K. 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. Discontinue the gas supply:
a. SHUT OFF external gas supply shutoff valve.
b. SHUT OFF internal gas supply shutoff valve located in the gas valve burner area.
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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 them the correct model number and
serial number so that your inquiry is handled in an expeditious manner.
B. PARTS
Replacement parts should be purchased from 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 ordering replacement parts from the Maytag dealer or the Maytag Co. be sure to give
them the correct model number and serial number so that your parts order can be
processed in an expeditious manner.
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SECTION V
WARRANTYINFORMATION
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.
IMPORTANT: Aseparate warranty card must be completed and returned for each individual dryer.
NOTE: Be sure to include the installation date when returning the warranty card(s).
B. WARRANTY
For a copy of the manufacturer’s commercial warranty covering your particular dryer(s), contact the Maytag
dealer from whom you purchased the equipment and request a dryer warranty form. If the dealer cannot be
contacted or is unknown, warranty information can be obtained from the Maytag Co.
NOTE: Whenever contacting the Maytag Co. for warranty information, be sure to have the dryer’s
model number and serial number available so that your inquiry can be handled in an
expeditious manner.
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SECTIONVI
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 airflow.
The accumulation of lint can restrict this airflow. If the guidelines in this section are met, a Maytag dryer will
provide many years of efficient, trouble free, and most importantly safe operation.
WARNING: LINT FROM MOST FABRICS IS HIGHLYCOMBUSTIBLE. THE
ACCUMULATION OFLINT CAN CREATEAPOTENTIALFIRE HAZARD.
WARNING: KEEPDRYERAREACLEARAND FREE FROM COMBUSTIBLE
MATERIALS, GASOLINE, AND OTHER FLAMMABLE VAPORSAND
LIQUIDS.
NOTE: Suggested time intervals shown are for average usage, which is considered six (6) to eight (8)
operational (running) hours per day.
IMPORTANT: Dryer produces combustible lint and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any lint buildup.
SUGGESTED CLEANING SCHEDULE
EVERY THIRD OR FOURTH LOAD
Clean the lint screen every third or fourth load. A clogged lint screen will cause poor dryer performance. The
lint drawer is located below the main door (refer to the illustration on page 24). Open the lint drawer, brush or
vacuum the lint off the lint screen, and remove the lint. Inspect lint screen and replace if torn.
NOTE: The frequency of cleaning the lint screen can best be determined from experience at each
location.
WEEKLY
Clean lint accumulation from lint chamber, thermostat, and microprocessor temperature sensor (sensor bracket)
area.
WARNING: TOAVOID THE HAZARD OFELECTRICALSHOCK, DISCONTINUE
ELECTRICALSUPPLYTOTHE DRYER.
90 DAYS
Inspect and remove lint accumulation in customer furnished exhaust ductwork system and from dryer’s internal
exhaust ducting.
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WARNING: THEACCUMULATION OFLINT IN THE EXHAUST DUCTWORK CAN
CREATEAPOTENTIALFIRE HAZARD.
WARNING: DO NOT OBSTRUCTTHE FLOW OF COMBUSTIONANDVENTILATIONAIR.
WARNING: INSPECTAND REMOVEANYLINTACCUMULATION, WHICH CAN CAUSE
THE BACK DRAFT DAMPER TO BIND OR STICK.
NOTE: A back draft damper that is sticking partially closed can result in slow drying and shutdown of
heat circuit safety switches or thermostats.
NOTE: When cleaning the dryer cabinet(s), avoid using harsh abrasives. Aproduct intended for the
cleaning of appliances is recommended.
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. Tighten loose V-belts when necessary. Complete operational check of controls and valves. Complete
operational check of ALL safety devices (door switches, lint drawer switch, sail switch, burner, and hi-limit
thermostats).
C. LUBRICATION
The motor bearings, idler bearings, and under normal/most conditions the basket (tumbler) bearings are permanently
lubricated. It is physically possible to relubricate the basket (tumbler) bearings if you choose to do so even
though this practice is not necessary. Use Shell Alvania #2 grease or its equivalent. The basket (tumbler)
bearings used in the dryer DO NOT have a grease fitting. Provisions are made in the bearing housing for the
addition of a grease fitting, which can be obtained elsewhere, or from the Maytag dealer by ordering kit P/N
882159 (includes two [2] fittings).
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D. LINT DRAWER REMOVAL
To 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.
IMPORTANT: 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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SECTIONVII
DATALABELINFORMATION
When contacting the Maytag dealer certain information is required to ensure proper service/parts information.
This information is on the 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 size of the dryer and the type of heat (gas, electric, or steam).
2. SERIALNUMBER –Allows the manufacturer to gather information on your particular dryer.
3. MANUFACTURING CODE NUMBER – The number issued by the manufacturer, which describes ALL possible options
on your particular model.
4. TYPE OFHEAT – This describes the type of heat for your particular dryer, gas (either natural gas or liquid propane [L.P.]
gas), electric, or steam.
5. HEAT INPUT (for GAS DRYERS) – This describes the heat input in British thermal units per hour (Btu/hr).
6. ORIFICE SIZE (for GAS DRYERS) – Gives the number drill size used.
7. ELECTRIC SERVICE – This describes the electric service for your particular model.
8. GAS MANIFOLD PRESSURE (for GAS DRYERS) – This describes the manifold pressure taken at the gas valve tap.
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SECTIONVIII
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 temperature selection keys (HI, MED, or LO).
c. Verify that the applicable indicator lights on the microprocessor controller (computer) board are lit.
(Refer to the illustration below.)
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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. The trial for ignition period will
be repeated for a total of three (3) retries/trials (the initial try and
two [2] more retries/trials). If the flame is not sensed at the end
of the third retry/trial (inter-purge period of 30-seconds), the DSI
module will “LOCKOUT” (light emitting diode [L.E.D.] diagnostic
indicator flashes).
A steady L.E.D. indicator indicates normal operation.
No L.E.D. indicator indicates a power or an internal failure has occurred.
3. For Models with DSI Module (Type II)
Theory of Operation:
Start the drying cycle. When the gas burner ignites within the
chosen trial for ignition time (8-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. The trial for ignition period will
be repeated for a total of three (3) retries/trials (the initial try and
two [2] more retries/trials). If the flame is not sensed at the end
of the third retry/trial (inter-purge period of 30-seconds), the DSI
module will “LOCKOUT” (a red L.E.D. diagnostic indicator will
flash).
An unlit red L.E.D. diagnostic indicator indicates normal operation.
Alit green L.E.D. diagnostic indicator indicates dryer controller is calling for heat and that ALL interlocks
have been satisfied.
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SECTION IX
MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS
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” with an audio indication.
If the burner hi-limit opens during a drying cycle, the Phase 7 computer will also display the same error code
described above, along with an audio indication. If the drum temperature is above 100° F (38° C), the dryer will
continue to run with no heat for 3 minutes or until the drum temperature has dropped below 100° F (38° C). The
pause key must be held down for 3-seconds to clear the fault. The open burner hi-limit must be reset “manually”
prior to the start of the next cycle.
WARNING: Discontinue power to dryer before attempting to reset hi-limit.
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