American Dryer Corp ML-55II User Manual

ML-55II Installation Manual

Phase 7, Non-Coin

Warning: For your safety the information
in this manual must be followed to
minimize the risk of fire or explosion or to
prevent property damage, personal injury
or death.

— Do not store or use gasoline or other flam-

mable vapors and liquids in the vicinity of
this or any other appliance.

— What To Do If You Smell Gas

• 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 supplier,
call the fire department.

— Installation and service must be performed

by a qualified installer, service agency or
the gas supplier.

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.

— Ne pas entreposer ni utiliser d’essence ni

d’autres vapeurs ou liquides inflammables
à proximité de cet appareil ou de tout autre
appareil.

— Que Faire Si Vous Sentez Une

Odeur De Gaz

• 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
fournisseur de gaz, appelez le service
des incendies.

— L’installation et l’entretien doivent être

assurés par un installateur ou un service
d’entretien qualifié ou par le fournisseur de
gaz.

American Dryer Corporation

88 Currant Road

Fall River MA 02720-4781

Telephone: [phone] / Fax: [phone]

e-mail: [e-mail]

www.amdry.com

ADC Part No. 113345

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 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 and liquids
in the vicinity of this or any other
appliance.

Pour Votre Sécurité

Ne pas entreposer ni utiliser
d’essence ni d’autres vapeurs ou
liquides inflammables à proximité
de cet appareil ou de tout autre
appareil.

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. The illustrations included in
this manual may nor depict your particular dryer exactly.

Important

For your convenience, log the following information:

DATE OF PURCHASE _____________ MODEL NO. _______________________________

RESELLER’S NAME ____________________________________________________________

Serial Number(s) ________________________________________________________________

ML-55 Phase 7

_________________________________________________________________

_________________________________________________________________

Replacement parts can be obtained from your reseller or the ADC factory. When ordering
replacement parts from the factory, you can FAX your order to ADC at [phone] or
telephone your order directly to the ADC Parts Department at [phone]. 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.

“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 lock out 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.

Please observe all safety precautions displayed
on the equipment and/or specified in the
installation manual included with the dryer.

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).

“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 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.

Under no circumstances should the dryer door
switch, lint drawer switch, or the heat safety circuit
ever be disabled.

Table of Contents __________

Safety Precautions ....................................... 2

Specifications/Component Identification ..... 3

Specifications ...................................................................... 3

Component Identification .................................................... 4

Installation Procedures ................................ 4

Location Requirements ...................................................... 4

Unpacking/Setting Up ......................................................... 5

Dryer Enclosure Requirements ......................................... 5

Fresh Air Supply Requirements ......................................... 6

Exhaust Requirements ....................................................... 6

Electrical Information .......................................................... 8

Gas Information ................................................................. 11

Steam Information............................................................. 12

Preparation For Operation/Start-Up.................................. 15

Preoperational Tests ........................................................ 15

Preoperational Instructions .............................................. 16

Shutdown Instructions ...................................................... 16

Service/Parts Information .......................... 17

Service ...............................................................................17

Parts...................................................................................17

Warranty Information ................................. 17

Returning Warranty Card ..................................................17

Warranty .............................................................................17

Returning Warranty Parts .................................................. 17

Routine Maintenance ................................. 18

Cleaning ............................................................................ 18

Adjustments ......................................................................18

Lubrication......................................................................... 18

Procedure for Functional Check of

Replacement Components ......................... 19

Data Label Information ............................... 20

Manual Reset Burner Hi-Limit Instructions 20

Phase 7 ............................................................................. 20

Dual Timer ......................................................................... 20

Fire Suppression System (F.S.S.) ................ 21

The dryer must never be operated with any of
the back guards, outer tops, or service panels
removed. Personal injury or fire could result.

Dryer must never be operated without the lint
filter/screen in place, even if an external lint
collection system is used.

For Your Safety

Do not dry mop heads in the dryer.

Do not use dryer in the presence of dry cleaning
fumes.

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.

2

American Dryer Corp.

113345-9

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.
The dryer must never be operated with any of the back guards,

outer tops, or service panels removed. Personal injury or fire
could result.

Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.

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.

What to do if You Smell Gas

• 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 supplier, call the fire

department.

Installation and service must be performed by a qualified
installer, service agency, or gas supplier.

Dryer(s) must be exhausted to the outdoors.
Although ADC 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

!

Explosion could result.
Do not dry rags or articles coated or contaminated with

gasoline, kerosene, oil, paint, or wax. Explosion could result.
Do not dry mop heads. Contamination by wax or flammable

solvents will create a fire hazard.
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.

A program should be established for the inspection and
cleaning of lint in the heating unit area, exhaust ductwork,
and inside the dryer. The frequency of inspection and cleaning
can best be determined from experience at each location.

combustible detergent, or “all purpose” cleaner.

Note

Failure to electrically ground the dryer properly will

void the warranty.

!

Under no circumstances should the dryer door switch, lint
drawer switch, or the heat safety circuit ever be disabled.

Warning

Personal injury or fire could result should the dryer

door switch, lint drawer switch, or the heat safety

!

circuit ever be disabled.

This dryer is not to be used in the presence of dry cleaning
solvents or fumes.

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.

Do not operate steam dryers with more than 125 psi (8.6 bar)
steam pressure. Excessive steam pressure can cause
damage to the steam coil and/or harm personnel.

Replace leaking flexible hoses or other steam fixtures
immediately. Do not operate the dryer with leaking flexible
hoses. Personal injury may result.

The normal pH level for copper type steam coils must be
maintained between a value of 8.5 to 9.5. For steel type
steam coils the pH level must be maintained between a value
of 9.5 to 10.5. These limits are set to limit the acid attack of
the steam coils.

Important

Coil failure due to improper pH level will void the

warranty.

!

Read and follow all caution and direction labels attached to
the dryer.

For safety, proper operation, and optimum performance, the
dryer must not be operated with a load less than sixty-six
percent (66%), 36 lbs (16 kg) of its rated capacity.

Warning

You must disconnect and lock out the electric supply

and the gas supply or the steam supply before any

!

allow access for cleaning, adjusting, installation, or testing of
any equipment per OSHA (Occupational Safety and Health
Administration) standards.

covers or guards are removed from the machine to

Important

Dryer must be installed in a location/environment,

which the ambient temperature remains between

!

40º F (4.44º C) and 130º F (54.44º C).

Warning

The collection of lint in the burner area and exhaust

ductwork can create a potential fire hazard.

!

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.

113345-9

www.amdry.com

3

SPECIFICATIONS/COMPONENT
IDENTIFICATION________________

Note

ADC reserves the right to make changes in

specifications at any time without notice or obligation.

!

Dryer Notes

Ductwork size varies with installation conditions.

Exhaust static pressure must be no less than 0 and

!

must not exceed 0.3 inches (0.74 mb) water column.

Steam Dryer Notes

Operating height of steam dryer is 81-inches

(205.74 cm).

!

Contact factory for assistance.
Steam dryers must be provided with clean, dry, regulated
80 psi + 10 psi (5.5 bar + 0.69 bar) air supply.

Size of piping varies with installation conditions.

Specifications _________________________

MAXIMUM CAPACITY (DRY WEIGHT) 55 lb 25 kg

TUMBLER DIAMETER 37” 94 cm
TUMBLER DEPTH 30”
TUMBLER VOLUME 18.67 cu ft
TUMBLER/DRIVE MOTOR 3/4 hp

DOOR OPENING (DIAMETER) 31-3/8”

WATER CONNECTION 3/4-11.5 NH
DRYERS PER 20’/40’ CONTAINER 10 / 20
DRYERS PER 48’/53’ TRUCK 26 / 28

VOLTAGE AVAILABLE 120-480v 1,3ø 2,3,4w 50/60 Hz
APPROX. NET WEIGHT 585 lb 269.9 kg
APPROX. SHIPPING WEIGHT 645 lb 292.6 kg
AIRFLOW 600 cfm 17 cmm

GasSteam*

HEAT INPUT 160,000 Btu/hr 40,320 kcal/hr
INLET PIPE CONNECTION 3/4” F.N.P.T.

kW Btu/hr kcal/hr
20 68,250 17,200
30 102,400 25,800

Electric

VOLTAGE AVAILABLE 120-480v 1,3ø 2,3,4w 50/60 Hz
APPROX. NET WEIGHT 625 lb 283.5 kg
APPROX. SHIPPING WEIGHT 675 lb 306.2 kg
AIRFLOW 600 cfm 17 cmm
STEAM CONSUMPTION 144.7 lb/hr 65.7 kg/hr
OPERATING STEAM PRESSURE 125 psi max 8.6 bar
COMPRESSED AIR CONNECTION 1/8” F.N.P.T.
COMPRESSED AIR VOLUME 0.75 cfh 0.02 cmh
BOILER HP (NORMAL LOAD) 4.2 Bhp
SUPPLY CONNECTION 1” F.N.P.T.
RETURN CONNECTION 1” F.N.P.T.

Shaded areas are stated in metric equivalents 12/01/04
* Specify air-operated steam damper system or electromechanical steam damper system when

ordering. Air-operated steam damper system must be provided with a clean, dry, regulated 80
psi ± 10 psi (5.52 bar ± 0.68 bar). Air connection is 1/8” N.P.T. Air volume requirement is 0.75

cfh (0.02 cmh).

OVEN SIZE

76.2 cm

0.528 cu m

0.56 kW

79.7 cm

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American Dryer Corp.

113345-9

Component Identification _____________

Dryer Front View

Illus. No. Description

1 Controls
2 Control (top access) Door Assembly
3 Main Door Assembly
4 Lint Compartment Area (lint screen located behind door)
5 Data Label and Installation Label

Dryer Rear View

INSTALLATION PROCEDURES _____

Installation should be performed by competent technicians
in accordance with local and state codes. In the absence of
these codes, the installation must conform to applicable
American National Standards: 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-B149.2­M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for
General Installation and Gas Plumbing) or Canadian
Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST
EDITION (for Electrical Connections).

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).

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.”

!

Illus. No. Description

1 Heating Unit
2 1/8” Compressed Air Supply Inlet

(Note: located behind the electric service relay box on

steam models only)
3* Electric Service Relay Box
4 Basket (tumbler) Bearing Mount Assembly
5 Idler Bearing Mount Assembly
6 Blower Motor Assembly (reversing models only)
7 Leveling Leg (rear)
8 Basket (tumbler) Drive Motor Assembly
9 Dryer Exhaust

* Electric service connections for gas and steam models are made in this box.

The dryer must not be installed or stored in an area where it
will be exposed to water and/or weather.

The dryer is for use in noncombustible locations.
Provisions for adequate air supply must be provided as noted

in this manual (refer to Fresh Air Supply Requirements).
Clearance provisions must be made from noncombustible

construction as noted in this manual (refer to Dryer Enclosure
Requirements).

Provisions must be made for adequate clearances for
servicing and for operation as noted in this manual (refer to
Dryer Enclosure Requirements).

Dryer must be exhausted to the outdoors as noted in this
manual (refer to Exhaust Requirements).

Dryer must be located in an area where correct exhaust venting
can be achieved as noted in this manual (refer to Exhaust
Requirements).

Important

Dryer should be located where a minimum amount

of exhaust duct will be necessary.

!

The dryer must be installed with a proper exhaust duct
connection to the outside.

The dryer must be installed with provisions for adequate
combustion and make-up air supply.

Caution

This dryer produces combustible lint and must be

exhausted to the outdoors. Every 6 months, inspect

!

the exhaust ducting and remove any lint build up.

Important

Dryer must be installed in a location/environment,

which the ambient temperature remains between

!

40º F (4.44º C) and 130º F (54.44º C).

113345-9

www.amdry.com

5

Unpacking/Setting Up_________________

Remove protective shipping material (i.e., plastic wrap, and/
or 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 door.

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.

The lint coops of all dryers are supported during shipping by
a bracket. Remove this bracket before starting the dryer.

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.

Dryer Enclosure Requirements________

Bulkheads and partitions should be
made of noncombustible materials
and must be located a minimum of
12-inches (30.48 cm) (18-inches
[45.72 cm] or more is recommended
for ease of installation,
maintenance, and service) above
the dryer outer top, except along the
front of the dryer which may be
partially closed in if desired. The
clearance between the bulkhead
header and the dryer must be a
minimum of 4-inches (10.16 cm) and
must not extend more than 4-inches
(10.16 cm) to the rear of the front.
The bulkhead facing must not be
closed in all the way to the top of the
dryer. A 1-inch (2.54 cm) clearance
is required.

Note

Allowances must be made

for opening the control

!

door.

Dryers may be positioned sidewall
to sidewall. However, a 1/16” (1.58
mm) minimum allowance must be
made for the opening and closing of
the control door and the lint 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 above for details.

Note

Air considerations are important for proper and

!

efficient operation.

Important

When fire sprinkler systems are located above the

!

dryers, a minimum of 18-inches (45.72 cm) above

be positioned sidewall to sidewall however, a 1/16” (1.58 mm)
minimum allowance is required between dryers (or wall) for
ease of installation and maintenance. Allowances must be
made for the opening and closing of the control door and the
lint door.

the dryer console (module) is required. Dryers may

6

American Dryer Corp.

113345-9

Important

Even though a minimum of only 12-inches (30.48

cm) is required, 18-inches (45.72 cm) or more is

! !

advantageous for ease of installation and service.

suggested. The additional clearance is

Fresh Air Supply Requirements _______

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 make-up air is
inadequate, drying time and drying efficiency will be adversely
affected. Ignition problems and sail switch “fluttering”
problems may result, as well as premature motor failure from
overheating.

Air supply (make-up air) must be given careful consideration
to ensure proper performance of each dryer. An unrestricted
source of air is necessary for each dryer. An airflow of 600
cfm (cubic feet per minute [17 cmm] [cubic meters per minute])
must be supplied to each gas, electric, and steam dryer. As
a general rule, an unrestricted air entrance from the outdoors
(atmosphere) of a minimum of 1-1/4 square foot (0.12 square
meters) is required for each dryer. The dryer must be installed
with provisions for adequate combustion and make-up air
supply.

Note

Component failure due to dry cleaning solvent fumes

will void the warranty.

Exhaust Requirements_________________

General Exhaust Ductwork Information

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, overheating of the dryer, and
shutdown of the burner by the airflow (sail) switches, burner
hi-limits, or basket (tumbler) hi-heat thermostats. The dryer
must be installed with a proper exhaust duct connection to
the outside.

Caution

This dryer produces combustible lint and must be

exhausted to the outdoors.

!

Improperly sized or installed exhaust ductwork can create a
potential fire hazard.

Important

It is recommended that exhaust or booster fans not

!

be used in the exhaust ductwork system.

The 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.

To compensate for the use of registers or louvers used over
the openings, this make-up air must be increased by
approximately thirty-three percent (33%). Make-up air
openings should not be located in an area directly near where
exhaust vents exit the building.

It is not necessary to have a separate make-up air opening
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 all the dryers.

Example: For a bank of four (4) dryers, two (2)

unrestricted openings measuring 2 feet by 1-1/4 feet
(0.61 meters by 0.38 meters) are acceptable.

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

dry cleaning solvent fumes. Make-up air that is

!

result in irreparable damage to the motors and other dryer
components.

contaminated by dry cleaning solvent fumes will

Horizontal Venting

When single dryer venting is used, the length of the ductwork
from the dryer to the outside exhaust outlet must not exceed
30 feet (9.1 meters). The minimum diameter of this ductwork
must be at least 8-inches (20.32 cm). In the case of multiple
(common) dryer venting, the distance from the last dryer to
the outside exhaust outlet must not exceed 15 feet
(4.6 meters). The shape of the ductwork is not critical as
long as the minimum cross-sectional area is provided. It is