American Dryer Corp AD-95 User Manual
AD-95/ML-95
Service Manual
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
Telephone: (508) 678-9000 / Fax: (508) 678-9447
E-mail: techsupport@amdry.com
072298SL/cj
ADC Part No. 450188
Retain This Manual In A Safe Place For Future Reference
American Dryer Corporation 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 qualified 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.
The following FOR YOUR SAFETY caution must be posted near the dryer in a prominent location.
FOR YOUR SAFETY
Do not store or use gasoline or
other flammable vapors or liquids
in the vicinity of this or any other
appliance.
We have tried to make this manual as complete as possible and hope you will find it useful. ADC reserves the right to make
changes from time to time, without notice or obligation, in prices, specifications, colors, and material, and to change or
discontinue models.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser dessence
ni dautres vapeurs ou liquides
inflammables dans le voisinage de cet
appareil ou de yout autre appareil.
Important
For your convenience, log the following information:
DATE OF P URCHASE MODEL NO.
DISTRI BUTORS NAM E
Serial Number(s)
Replacement parts can be obtained from your distributor or the ADC factory. When ordering replacement parts from the
factory, you can FAX your order to ADC at (508) 678-9447 or telephone your orders directly to the ADC Parts Department at
(508) 678-9000. Please specify the dryer model number and serial number in addition to the description and part number, so
that your order is processed accurately and promptly.
The illustrations on the following pages may not depict your particular dryer exactly. The illustrations are a composite of the
various dryer models. Be sure to check the descriptions of the parts thoroughly before ordering.
IMPORTANT NOTE TO PURCHASER
Information must be obtained from your local gas supplier on the instructions
to be followed if the user smells gas. These instructions must be posted in a
prominent location near 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.
«Attention: Lor des opérations dentretien
Caution: Label all wires prior to
disconnection when servicing controls. Wiring
errors can cause improper operation.
des commandes étiqueter tous fils avant
de les déconnecter. Toute erreur de
câblage peut étre une source de danger et
de panne.»
CAUTION
DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION.
WARNING
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYER(S).
CHILDREN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATION.
FOR YOUR SAFETY
DO NOT DRY MOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
WARNING
UNDER NO CIRCUMSTANCES should the door switch or the heat circuit devices ever
be disabled.
WARNING
The dryer must never be operated with any of the back guards, outer tops, or service
panels removed. PERSONAL INJURY or FIRE COULD RESULT.
WARNING
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN
PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.
IMPORTANT
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or
specified in the installation and operator's manual included with the dryer.
Dryers 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.
Table of Content
SECTION I
Important Information...................................................................................................................................... 3
A. Safety Precautions .......................................................................................................................................... 3
SECTION II
Maintenance ...................................................................................................................................................... 4
A. Cleaning .......................................................................................................................................................... 4
B. Adjustments ..................................................................................................................................................... 5
C. Lubrication ...................................................................................................................................................... 5
SECTION III
Installation Requirements ............................................................................................................................... 6
A. Enclosure, Air Supply, and Exhaust Requirements ......................................................................................... 6
B. Electrical and Gas Requirements .................................................................................................................... 6
C. Operational Service Check Procedure ........................................................................................................... 7
SECTION IV
Desciption of Parts ........................................................................................................................................... 8
A. Computer Panel (Microprocessor) ................................................................................................................. 8
B. Reversing Relay Panel.................................................................................................................................... 9
C. HSI Module (for Gas Models ONLY) .......................................................................................................... 10
D. Gas Burner Assembly................................................................................................................................... 10
E. Drive Motor................................................................................................................................................... 11
F. Blower Motor and Impellor .......................................................................................................................... 11
G. Drive Shaft Assembly.................................................................................................................................... 12
H. Idler Shaft Assembly .................................................................................................................................... 13
I. Basket (Tumbler) .......................................................................................................................................... 14
J. Main Door Switch ......................................................................................................................................... 14
K. Sail Switch (for Gas Models ONLY)............................................................................................................ 15
L. Hi-Limit (for Gas Models ONLY) ................................................................................................................ 15
M. Automatic Reset Thermostat ....................................................................................................................... 16
N. Lint Screen ................................................................................................................................................... 16
O. Lint Drawer Switch ...................................................................................................................................... 17
SECTION V
Servicing .......................................................................................................................................................... 18
A. Computer Controls ........................................................................................................................................ 18
B. Ignition Controls ............................................................................................................................................ 20
C. Thermostats .................................................................................................................................................. 23
D. Sail Switch Assembly (for Gas Models ONLY) ........................................................................................... 24
E. Front Panel and Main Door Assemblies ....................................................................................................... 25
F. Pulleys .......................................................................................................................................................... 28
G. Basket Assembly ........................................................................................................................................... 32
H. Bearings ........................................................................................................................................................ 33
I. V-Belts .......................................................................................................................................................... 33
J. Motors ........................................................................................................................................................... 34
K. Impellor ......................................................................................................................................................... 37
L. Lint Drawer Assembly .................................................................................................................................. 37
SECTION VI
Troubleshooting .............................................................................................................................................. 38
SECTION VII
Phase 6 OPL System Diagnostics ................................................................................................................ 41
A. Diagnostic (L.E.D. Display) Failure Codes .................................................................................................. 41
B. LED Display Indicators ................................................................................................................................ 43
C. L.E.D. Codes ................................................................................................................................................ 48
D. Computer Logic and Wiring Diagram........................................................................................................... 50
SECTION VIII
Technical Information .................................................................................................................................... 56
A. Motor Plate (High and Low Voltage) ........................................................................................................... 56
B. Data Label .................................................................................................................................................... 57
C. Using a Manometer ...................................................................................................................................... 58
D. Tool List ........................................................................................................................................................ 59
SECTION I
Important Information
A. Safety Precautions
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. Purchaser or 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. Dryer must be exhausted to the outdoors.
4. Although ADC's dryer is a very versatile machine, 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" cleaners. Fire or
explosion could result.
WARNING: DO NOT dry rags or articles coated with gasoline, kerosene, paint, or wax. Fire or
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 rubberlike materials. Drying in a heated tumbler may damage plastic
or rubber and also may be a fire hazard.
5. A program should be established for the inspection and cleaning of lint in the burner area and exhaust duct
work. The frequency of cleaning can best be determined from experience at each location.
WARNING: The collection of lint in the burner area and exhaust duct work can create
a potential fire hazard.
6. For personal safety, the dryer must be electrically grounded in accordance with local codes and the National
Electric Code ANSI/NFPA No. 70-LATEST EDITION.
NOTE: Failure to do so will void the warranty.
7. Under no circumstances should the dryer door, lint drawer switches or heat safety devices ever be disabled.
WARNING: PERSONAL INJURY OR FIRE COULD RESULT.
8. Articles should never be left unattended for an extended period of time in the basket after completion of the
drying and cooling cycles.
9. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
10. Read and follow
WARNING: CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR IN THE DRYERS
ALL caution and direction labels attached to dryer.
CHILDREN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATION.
3
SECTION II
Routine Maintenance
A. Cleaning
A program and 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 airflow. If the guidelines in this section are met, an ADC dryer will provide
many years of efficient, trouble free, and most importantly safe operation.
WARNING: LINT FROM MOST FABRICS IS HIGHLY COMBUSTIBLE. THE
ACCUMULATION OF LINT CAN CREATE A POTENTIAL FIRE HAZARD.
WARNING: KEEP DRYER AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS,
GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
NOTE: Suggested time intervals shown for average usage which is considered six (6) to eight (8)
operational (running) hours per day.
Clean lint drawer and screen every third load.
NOTE: Frequency can best be determined at each location.
Daily (beginning) of each work shift.
Clean lint from the drawer and screen. Inspect lint screen and replace if torn.
Weekly
Clean lint accumulation from lint chamber, thermostat and microprocessor temperature sensor (sensor bracket)
area.
WARNING: To avoid the hazard of electrical shock, discontinue electrical supply to dryer.
90 Days
Remove lint from basket, drive motors and surrounding areas. Remove lint from gas valve burner area with a
dusting brush or vacuum cleaner attachment.
NOTE: To prevent damage, avoid cleaning or touching ignitor and flame-probe assembly.
Remove lint accumulation from inside control box and at rear area behind control box.
6 Months
Inspect and remove lint accumulation in customer-furnished exhaust duct work system and from dryer's internal
exhaust ducting.
4
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. Check customer furnished back
draft damper in exhaust duct work. Inspect and remove any lint accumulation which can
cause damper to bind or stick.
NOTE: A back draft damper that is sticking partially closed can result in slow drying and shutdown of the
heat circuits safety switches or thermostats.
NOTE: When cleaning dryer cabinets, avoid using harsh abrasive. A product intended for cleaning
appliances is recommended.
B. Adjustments
Seven Days after Installation and every 6 Months
Inspect bolts, nuts, screws (bearing set screws), nonpermanent gas connections (union, shut-off valves, orifices,
and ground connections). 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 switch, lint drawer switch, sail switch, burner and hi-limit thermostats).
C. Lubrication
The motor bearings, idler bearings, and basket (tumbler) bearings are permanently lubricated. No lubrication is
necessary.
The impeller (fan) shaft bearing should be lubricated every three (3) months.
5
SECTION III
Installation Requirements
Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, 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 Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION
(for Electrical Connections).
A. Enclosure, Air Supply, and Exhaust Requirements
NOTE: The following information is very brief and general. For detailed description, refer
to the AD-95 Installation Manual supplied with dryer. (ADC P/N 112197)
Bulkheads and partitions around the dryer should be made of noncombustible materials. Allowances should
be made for the opening and closing of the control door and lint door. (Refer to appropriate installation manual for
recommended distances and minimum allowances required.)
When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and
exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the
makeup air is inadequate, drying time and drying efficiency will be adversely affected. Ignition problems and sail
switch "fluttering" problems on gas dryers may result, and you also could have premature motor failure from
overheating. The air supply must be given careful consideration to insure proper performance of each dryer.
IMPORTANT: Makeup air must be provided from a source free of dry cleaning fumes. Makeup air
that is contaminated by dry cleaning fumes will result in irreparable damage to motors
and other dryer components.
Exhaust duct work should be designed and installed by a competent technician. Improperly sized duct work will
create excessive back pressure which will result 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. (Refer to appropriate
Installation Manual for more detail.)
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCT WORK CAN
CREATE A POTENTIAL FIRE HAZARD.
B. Electrical and Gas Requirements
It is your responsibility to have ALL electrical connections made by a properly licensed and competent
electrician to assure 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 Electric Code ANSI/NFPA No. 70-LATEST EDITION, or Canadian
Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION (for Electrical Connections).
IMPORTANT: Failure to comply with these codes or ordinances and the requirements
stipulated in this manual can result in personal injury or component failure.
6
The dryer installation must meet the AMERICAN NATIONAL STANDARD, NATIONAL FUEL GAS CODE
ANSI Z223.1-LATEST EDITION, as well as, local codes and ordinances, and must be done by a qualified
technician, or Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION
(for Electrical Connections).
NOTE: Undersized gas piping will result in ignition problems and slow drying and can create a safety
hazard.
The dryer must be connected to the type of gas (natural or L.P.) indicated on the dryer data label. If this
information does not agree with the type of gas available, contact the distributor who sold the dryer or contact the
factory.
The gas input ratings shown on the dryer data label are for elevations up to 2,000 feet, unless elevation requirements of over 2,000 feet were specified at the time the dryer order was placed with the factory. The adjustment
for dryers in the field for elevations over 2,000 feet are made by changing the burner orifices. If this adjustment
is necessary, contact the distributor who sold the dryer or contact the factory.
NOTE: Any burner changes must be made by a qualified technician.
C. Operational Service Check Procedure
1. Turn on electric power to the dryer.
2. To start dryer:
a. Display will read "READY"
b. Press "E" touch pad on the keyboard of microprocessor controller (computer).
c. The dryer will start and display will show "dRYING MANUAL CYCLE, 30 MIN REMAIN,"
then display the drum temp.
NOTE: Pressing touch pads A, B, C, D and F will also start the dryer. Six (6) preprogrammed drying
cycles (A through F) have been stored in the computer's memory. (See computer operator's
manual for details.)
3. Make a complete operational check of all the operating controls to assure that the timing is correct,
temperature selection switches are functioning, etc.
4. Make a complete operational check of all safety-halted circuits: door switches, hi-limit thermostat, sail
switch, cycling thermostats, etc.
5. For gas dryers a gas pressure test should be taken at the gas valve pressure tap of each dryer to assure
that the water column pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at the pressure tap on the gas valve body):
Natural Gas - 3.5 to 4 inch water column
L.P. Gas - 10.5 to 11 inch water column.
6. If computer program changes are required, refer to the Phase 6 OPL Operator's Manual (ADC P/N
113022) for details.
7. The dryer should be operated through one complete cycle to assure that no further adjustments are neces-
sary and that all components are functioning properly.
8. Check the electric service phase sequence. While the dryer is operating, check to see if the blower wheel
is rotating in the proper direction. Looking from the front, the blower wheel should spin in the clockwise
direction. If so, the phasing is correct. If the phasing is incorrect, reverse two (2) leads at connections L1,
L2 or L3 of power supply to the dryer.
7
SECTION IV
Description of Parts
prior to February 11, 1998
A. Control Panel (Microprocessor)
Lifting the control door will reveal the control panel assembly. Opening the control panel will allow access to
the major components which include the computer board
and keypad. The keypad inputs to the computer what
temperature and program has been selected. The computer controls the entire operation of the machine. It
accepts inputs and gives outputs throughout the machine.
as of February 11, 1998
8
...with circuit breaker
B. Reversing Relay Panel
Lifting the control door will reveal the reversing relay
box. Located on the back of the relay box is the reversing relay panel. Included on this panel is a four (4) position terminal block, blower overload, blower contactor,
reversing contactor, 24VAC transformer, fuse or circuit
breaker, ground lug and an arc suppressor (A.S.) board.
...with fuses
9
C. HSI Module (Gas Models
Only)
The HSI system consists of a microprocessorbased control module, along with a hot surface
ignitor probe and a flame probe assembly. The
hot surface ignitor is a silicon carbide ignitor that
upon application of 24VAC will glow bright
orange for the inter-purge time period. Upon
ignition, the resistance in the flame sensor
electrode changes and the information is sent
to the HSI module via the sensor probe lead
connection to the module. Once the resistance
is changed and sensed, the HSI module will
sustain the gas flow (provide 24VAC power to
the gas valve).
10
D. Gas Burner Assembly
Gas-heated dryers are equipped with a gas
burner assembly consisting of three (3) burner
tubes, gas valve, glo bar, flame sensor, sail
switch, and hi-limit thermostat. The inlet
piping enters through the rear of the dryer on
the left-hand side (viewing from the front)
and runs to the front of the dryer where the
gas valve is located.
E. Drive Motor
The TEFC (totally enclosed, fan-cooled) drive motor is located in the front left corner (viewing from
front) behind the front panel of the dryer. It sits
on an adjustable base so the motor can be easily
adjusted to the left or right, up or down, forward
or backward. The drive motor is a 1/2 HP motor
and operates on 208 to 460 volts, 50/60 hertz, 3phase.
F. Blower Motor and Impeller
The impeller is shaft driven. The blower motor drives the shaft on which the impeller is
mounted. This enables the impeller to run at
a higher RPM, thereby producing a higher
airflow (CFM).
NOTE: The bearing on this type of blower assembly should be greased according to the maintenance
section of this manual.
11
taperlock
trantorque
G. Drive Shaft Assembly
(Viewing from the front of the dryer.) Behind front panel
on the left side of the dryer, you can view the drive shaft
assembly which consists of a 9" drive pulley, two (2) 6"
wheels, two (2) trantorques, on models manufactured prior
to December 15, 1997; or with two (2) taperlock bearings, on models manufactured after December 15, 1997;
and two (2) 1" pillow block bearings.
12
H. Idler Shaft Assembly
(Viewing from the front of the dryer.) Behind the front panel on the right side of the dryer you will view the
idler shaft assembly which consists of two (2) 6" wheels, two (2) transtorque on models manufactured
prior to December 15, 1997; or with two (2) taperlock bearings on models manufactured after December
15, 1997; and two (2) 1" pillow block bearings.
transtorque
taperlock
13
I. Basket (Tumbler)
The basket consists of a basket (tumbler) weldment
which have four (4) ribs and four (4) removable
perforated panels which are mounted to the rib
sections of the basket (tumbler) weldment with
1/4-20 x 1/4" socket button head screws.
J. Main Door Switch
The main door switch is mounted to the front panel
behind the main door. When the main door opens,
the switch will also open, preventing the dryer from
operating. The main door switch is a safety device
and should never be disabled.
14
K. Sail Switch (Gas Models Only)
The sail switch is located on the front of the burner box. A sail switch
consists of a round damper plate on a lever arm which is in contact with
an electric switch. When the fan or air blower comes on, it draws air
through the gas burner. This creates a negative pressure inside the
burner box, and this negative pressure pulls in the round damper and
activates the sail switch. If there is improper air flow, the damper will
not pull in, preventing the burner from starting. The display will also
read "no airflow flow" with an audio indication. Improper airflow can be
caused by improperly designed exhaust ducting where the duct run is
too long or has too many sharp bends in it. It can also be caused by a
lack of makeup air.
L. Hi-Limit (Gas Models Only)
Prior to May 26, 1998. The high limit thermostat is an
automatic reset disc-type thermostat set at 330º F and
located near the burner. If the burner flame gets too hot,
this thermostat will shut off the burner. This is generally
caused by low airflow through the dryer. In a hi-limit
situation the display will read "bURNER SAFETY FAIL"
with an audio indication.
As of May 26, 1998. The high limit thermostat is a
manual reset disc-type thermostat set at 330º F and located near the burner. If the burner flame gets too hot,
this thermostat will shut off the burner. This is generally
caused by low airflow through the dryer. In a hi-limit
situation the display will read "bURNER SAFETY FAIL"
with an audio indication. The manual reset thermostat
must be reset manually or the 24VAC burner circuit will
never be complete. This will cause the phase 6 to continue to go off on "bURNER SAFETY FAIL" with an
audio indication.
15
M. Automatic Reset Thermostat
This is located inside the dryer in the lint compartment above the lint screen. This thermostat
senses the heated air after it passes through the
basket. If the air temperature gets too hot, the
thermostat will shut off the burner. The dryer
will not run until the air temperature cools down.
At this time, the thermostat will reset. Basket
and blower will run but the dryer will not heat. If
the temperature sensor opens the display will read
"TEMP SENSOR FAIL CHECK TEMP SENSOR FUSE" with an audio indication. If the thermostat opens the display will read "dRUM
SAFETY FAIL" with an audio indication.
N. Lint Screen
The lint screen is located in the front of the dryer
behind the lint door it is a non-removable framed
screen which is screwed into the lint coupe. To
clean the lint off the screen simply brush the screen
clean. The lint screen must be kept clean in order
for the dryer to operate properly and efficiently.
Inspect the screen for tears and replace as needed.
16
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