American Dryer Corp WDA-385, ADG-385 User Manual
ADG-385/WDA-385
Service Manual
1996 thru 1998
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
Telephone: (508) 678-9000 / Fax: (508) 678-9447
E-mail: techsupport@amdry.com
121396MFM/tf ADC Part No. 450179
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 properly licensed 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.
WARNING:
WARNING: The dryer must never be operated with any of the back guards, outer tops, or
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.
UNDER NO CIRCUMSTANCES should the door switch or the heat circuit devices
ever be disabled.
service panels removed. PERSONAL INJURY or FIRE COULD RESULT.
Important
For your convenience, log the following information:
DATE OF PURCHASE MODEL NO.
DISTRIBUT ORS NAME
Seria l Nu mber (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.
CAUTION
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGER-
OUS OPERATION.
VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION
DRYER(S) 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 DRYER(S) IN
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.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPOR AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE
DO NOT DRY MOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
.
IMPORTANT
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the
equipment and/or specified in the installation/operator's manual included with
the dryer.
Dryer(s) must not be installed or stored in an area where it will be exposed to
water and/or weather.
The wiring diagram for the dryer is located in the front electrical control box
area.
Table of Contents
SECTION I
Important Information
A. Safety Precautions .......................................................................................................................................... 3
SECTION II
Maintenance
A. Cleaning .......................................................................................................................................................... 4
B. Adjustments .................................................................................................................................................... 5
C. Lubrication .....................................................................................................................................................5
SECTION III
Installation Requirements
A. Enclosure, Air Supply, and Exhaust Requirements ....................................................................................... 6
B. Electrical and Gas Requirements ................................................................................................................... 7
C. Operational Service Check Procedure ............................................................................................................ 7
SECTION IV
Description of Parts
A. Control Panel .................................................................................................................................................. 9
B. Control Box .................................................................................................................................................... 9
C. Coin Box and Vault ........................................................................................................................................ 9
D. Main Door Switch ........................................................................................................................................ 10
E. Lint Coop ...................................................................................................................................................... 10
F. Tumbler ........................................................................................................................................................ 10
G. Tumbler Bearing and Pulley Arrangement .................................................................................................. 11
H. Idler Bearing .................................................................................................................................................11
I. Motor Assembly ........................................................................................................................................... 11
J. Temperature Sensors .................................................................................................................................... 12
K. Sail Switch .................................................................................................................................................... 12
L. Motor Contactor (1Ø Motor) ........................................................................................................................ 13
M. Non-Reversing Contactor (3Ø Motor) ........................................................................................................ 13
N. Hi-Limit Thermostat..................................................................................................................................... 13
SECTION V
Servicing
A. Burner Controls (Gas) .................................................................................................................................. 18
B. Thermostats and Temperature Sensor........................................................................................................... 22
C. Sail Switch Assembly (Gas and Electric Models).........................................................................................24
D. Front Panel and Main Door Assemblies ....................................................................................................... 25
E. Tumbler and Bearing Assembly (Remove backguard to access assembly) .................................................28
F. Idler and Bearing Assembly ......................................................................................................................... 31
G. Drive Pulley .................................................................................................................................................. 32
H. Tumbler (basket) .......................................................................................................................................... 33
I. V-Belts (refer to illustration in Sections I, J and K) ..................................................................................... 36
J. Motor ............................................................................................................................................................ 37
K. Impellor ........................................................................................................................................................ 37
L. Lintscreen ..................................................................................................................................................... 37
SECTION VI
Trouble Shooting
A. Phase 5 Coin System Diagnostics ................................................................................................................ 38
B. No Heat Condition ........................................................................................................................................ 41
C. No Start Condition ........................................................................................................................................ 43
D. No Display Condition ................................................................................................................................... 44
E. "dSFL" Display Condition............................................................................................................................ 46
F. "dOOr" Display Condition ........................................................................................................................... 47
SECTION VII
Technical Information
A. Data Label..................................................................................................................................................... 48
B. Using A Manometer ..................................................................................................................................... 49
C. L.E.D. Display Codes ................................................................................................................................... 50
D. Computer Logic and Wiring Diagram.......................................................................................................... 51
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/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 mopheads. 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/or the
National Electric Code ANSI/NFPA No. 70-LATEST EDITION.
7. Under no circumstances should the dryer door or lint drawer switch(es) or heat safety devices ever be
disabled.
WARNING: PERSONAL INJURY or FIRE COULD RESULT.
8. Read and follow ALL caution and direction labels attached to dryer.
WARNING: CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR IN THE
DRYER(S). CHILDREN SHOULD BE SUPERVISED IF NEAR DRYER(S)
IN OPERATION.
3
SECTION II
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 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.
SUGGESTED INTERVAL FUNCTION
DAILY Clean Lint screen. Inspect lint screen and replace if torn.
90 DAYS Remove lint accumulation from lint chamber thermostats and
sensors.
WARNING: To avoid the hazard of electrical shock, discontinue electrical supply to dryer.
90 DAYS Remove lint from the motor air vents and surrounding area.
IMPORTANT: Lint accumulation will restrict internal motor air flow, causing overheating and
irreparable damage. Motor failure due to lint accumulation WILL VOID THE
MANUFACTURER'S WARRANTY.
120 DAYS Remove lint from gas burner area with a dusting brush or vacuum cleaner
attachment.
6 MONTHS Inspect and remove lint accumulation in customer-furnished
exhaust duct work system. Inspect exhaust back draft dampers to
insure they are not binding. Inspect and remove ALL lint
accumulation from in and around control box area, including coin
acceptors. Clean lint accumulation from around tumbler wrapper
area.
WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK CAN
CREATE A POTENTIAL FIRE HAZARD.
4
AS REQUIRED In cleaning and care of the cabinet, avoid using harsh abrasives. A
product intended for the cleaning of appliances is recommended.
B. Adjustments
SUGGESTED INTERVAL FUNCTION
6 MONTHS Motor and drive belts should be examined. Cracked or seriously
frayed belts should be replaced. Tighten loose belts when necessary,
and check belt alignment.
6 MONTHS Complete operational check of controls and valves.
6 MONTHS Complete operational check of
sail switch, burner and lint chamber thermostats.)
12 MONTHS Inspect bolts, nuts, screws, non-permanent gas connections,
(unions, orifices, etc.) electrical terminals, and grounding
connections.
ALL safety devices (door switches,
C. Lubrication
The motor bearings, idler bearings and tumbler bearings are permanently lubricated, and no lubrication is
necessary.
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
and/or
National Electric Code ANSI/NFPA No. 70-LATEST EDITION
A. Enclosure, Air Supply, and Exhaust Requirements
NOTE: The following information is very brief and general. For detailed description, refer
to the Installation Manual for coin machines.
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. Also, allowances should be
made in the rear for ease of maintenance. (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 out-
doors. If the make-up 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: Make-up air must be provided from a source free of dry cleaning fumes.
Make-up 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.
6
B. Electrical and Gas 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 regula-
tions or codes. In the absence of such codes,
must conform to the applicable requirements of the National Electric Code ANSI/NFPA No. 70-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.
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.
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.
ALL electrical connections, material, and workmanship
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
After performing any service or maintenance function, an operational check should be performed to
insure that
1. Make a complete operational check of
temperature selection switches are functioning properly.
2. Make a complete operational check of
sail switch, cycling thermostats, etc.
3. On gas models, 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.
ALL components are performing properly.
ALL the operating controls to insure that the timing is correct,
ALL safety related circuits, door switch(es), hi-limit thermostat,
NOTE: Water column pressure requirements: (measured at the pressure tap on the gas valve body.)
Natural Gas - 3.5 to 4 inches W.C.L.P. Gas - 10.5 to 11 inches W.C.
7
4. The dryer should be operated through one complete cycle to assure that no future adjustments are
necessary and that
5. For 3Ø motor models 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, L3 of power supply to the dryer.
ALL components are functioning properly.
8
SECTION IV
Description of Parts
A. Control Panel
Lifting the control door will reveal the control panel
assembly. Opening the control panel will allow
access to the major components which include the
coin acceptors, computer board, and keypad. The
coin acceptor sends the signal to the computer that a
coin has been inserted. The keypad inputs to the
computer what temperature has been selected. The
computer controls the entire operation of the machine.
It accepts inputs and gives outputs to various parts
throughout the machine. Some models are shipped
as dual coin machines, however, the basic operation
remains the same.
B. Control Box
The computer control box is made up of fuse(s),
24VAC transformer, and a 30 position terminal block.
The fuse(s) protect the incoming voltage from
shorting. The transformer is used to break down the
incoming voltage to 24VAC for the control voltage
of the machine. The 30 position terminal block is
used to combine the various common wires
throughout the machine for simplicity and ease of
service.
C. Coin Box and Vault
The coin box and vault are located in the control box.
When a coin passes the coin sensor, it drops into the
coin vault. Lifting the control doors reveals the coin
box. To remove the coin box turn the key and pull
out.
9
D. Main Door Switch
The main door switch is located behind the main door
on the right hand side. When the main door is opened,
the switch will also open preventing the dryer from
operating. The main door switch is a safety device and
should never be disabled.
E. Lint Coop
The lint coop is the bottom portion of the dryer behind
the lint door. Inside the lint coop is the lint screen which
prevents lint from entering the exhaust system. The
lint screen should be kept clean at all times. On the WDA-
385/ADG-385 models there are two (2) lint screens. The
lint screens should be cleaned on a daily basis. Lint screens
with tears or holes should be replaced immediately.
F. Tumbler
The tumbler consists of three or four ribs and a
perforated basket along with a front and back which
are riveted or screwed together as an assembly. The
tumbler also consists of tie rods which support the
tumbler from front to back. The tumbler support is
used to mate the tumbler to the drive system in the rear.
Some models also have a felt band which helps to keep
lint from accumulating behind the basket.
10
G. Tumbler Bearing and Pulley Arrangement
The tumbler bearing and the pulley arrangement is located
(viewing from the rear of the dryer) approximately at the upper
center of the dryer. The arrangement consists of a pulley,
bearing box, and bearing which serve to adjust, drive, and
support the tumbler. The bearing box has various nuts and bolts
that are made to adjust the basket vertically and horizontally.
H. Idler Bearing
(Viewing from the rear of the dryer)
The idler assembly is located approximately on the lower
left hand side of the dryer. The idler assembly consists
of one (1) compound pulley. The idler's main purpose
is to reduce the speed and increase the torque provided
to the tumbler bearing. Also, the idler assembly belt
tension can be adjusted.
I. Motor Assembly
The drive motor is located on the back, approximately
lower center of the dryer. It sits on an adjustable base
so that the motor can be easily adjusted to the left or
right, up or down. The blower end of the motor is
connected to the impellor, a backward curved paddle
wheel. The impellor provides air flow in the dryer. It
creates a vacuum which pulls the hot air from the burner
into the basket through the lint screen and out the
exhaust. The single phase machine will have plug type
motor as shown to the right.
11
J. Temperature Sensors
The temperature sensor used in a transducer that
converts heat into microamps that the computer board
then uses to calculate the temperature.
K. Sail Switch
The sail switch consists of a round damper plate on a
lever arm which acts like an actuator for a
micro-switch. When the air blower comes on, it draws
air through the burner. This creates a negative
pressure inside the burner box, and this negative
pressure pulls in the round damper which activates
the sail switch. If there is improper airflow, the damper
will not pull in, preventing the burner from coming
on. Improper air flow can be caused by improperly
designed exhaust ducting, where the duct run is too
long or has too many sharp bends on it. It can also
be caused by a lack of make up air. Sail switch is
located in the back of the burner.
12
L. Motor Contactor (1Ø Motor)
This motor contactor used on single phase dryers, is
located in the rear of the machine, in the Electrical
Panel Box. It's purpose is to transfer the higher
voltage to the motor when the contactor coil voltage
has been achieved. The contactor will have a filter ca-
pacitor across the coil connections. This helps smooth
out the 24 volt signal from the computer board.
M. Non-Reversing Contactor (3Ø Motor)
The non-reversing contactor is used on 3 phase
non-reversing dryers and is located on the upper left hand
side of the dryer (view from rear). It is through the contactor
that the voltage inputs are fed. Its purpose is to transfer the
higher voltage to the motor when the contactor coil voltage
have been achieved. The contactor will have a filter
capacitor across the coil connections. This helps smooth
out the 24 volt signal from the computer board.
N. Hi-Limit Thermostat
The hi-limit thermostat is another safety
device that we use on gas and electric
models. The hi-limit is located in the
burner or oven area. The hi-limit switch
cuts off the heat if the temperature exceeds
330° for gas models. Under normal conditions
the only way this device would shut off the
heat is when the air flow changes to the extent
of making the flame brush up against it.
13
SECTION V
Servicing
ALL electrical/mechanical service or repairs should be made with the electrical power to the dryer
disconnected (power off).
WARNING: PERSONAL INJURY COULD RESULT
The information provided in this section should not be misconstrued as a device for use by an untrained
person making repairs. Service work should be performed by competent technicians in accordance with
local, state, and federal codes.
When contacting the factory for assistance, always have the dryer model and serial numbers available.
CAUTION: Observe ALL safety precautions displayed on the dryer or specified in this manual
before and while making repairs.
Before considering replacement, make sure that ALL connectors are in place and making proper contact.
Check input voltages and temperature sensor. After replacing any parts or performing adjustments or
service run through a complete cycle.
To Replace Control Panel Assembly
1. Disconnect power to the dryer.
2. Disconnect main power harness from rear of
computer by squeezing locking tab and pulling
connector straight back.
3. Disconnect the green ground wire from the
computer.
4. Disconnect coin acceptor optic switch connector
from 15 pin harness.
5. To remove control panel assembly from the
control box, gently tap the bottom of the control
panel upward and lift off the hinges.
6. Install new control panel assembly by reversing
this procedure.
7. Be sure to check or reset programs.
NOTE: Use caution when handling MP Controller. Easily damaged by static electricity.
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