ADC AD-170SE User Manual

4 (1)

AD-170SE Installation Manual

Phase 7 / Non-Coin / S.A.F.E. System

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.

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 USA

Telephone: +1 (508) 678-9000 / Fax: +1 (508) 678-9447

e-mail: techsupport@amdry.com

www.amdry.com

ADC Part No. 113398-12

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 not depict your particular dryer exactly.

Important

For your convenience, log the following information:

AD-170 PH7

DATE OF PURCHASE __________________________________________________ MODEL NO. ________________________

RESELLER’S NAME ________________________________________________________________________________________

Serial Number(s)

________________________________________________________________________________________

 

________________________________________________________________________________________

 

________________________________________________________________________________________

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 +1 (508) 678-9447 or telephone your order directly to the ADC Parts Department at +1 (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.

“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.

! WARNING

Proposition 65

Use of this product could expose you to substances from fuel combustion that contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm.

IMPORTANT

YOUMUSTDISCONNECTANDLOCKOUTTHEELECTRICSUPPLYANDTHEGAS 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.

FOR YOUR SAFETY

DO NOT DRYMOPHEADS IN THE DRYER.

DO NOT USE DRYER IN THE PRESENCE OF DRYCLEANING FUMES.

WARNING

UNDER NO CIRCUMSTANCES should the dryer door switches, the lint drawer switch, or the heat circuit ever be disabled.

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).

 

Table of Contents

 

SECTION I

 

IMPORTANT INFORMATION ...............................................................................

3

A. ReceivingandHandling ...............................................................................................................

3

B.

Safety Precautions ......................................................................................................................

4

SECTION II

 

SPECIFICATIONS/COMPONENT IDENTIFICATION.....................................

6

A. Specifications .............................................................................................................................

6

B.

Component Identification ............................................................................................................

8

SECTION III

 

INSTALLATION PROCEDURES .........................................................................

10

A. Location Requirements .............................................................................................................

10

B. Unpacking/Setting Up ...............................................................................................................

11

C. Dryer Enclosure Requirements ..................................................................................................

13

D. FreshAir Supply Requirements .................................................................................................

14

E.

Exhaust Requirements ...............................................................................................................

15

F.

ElectricalInformation ................................................................................................................

21

G.

Gas Information ........................................................................................................................

25

H. Steam Information ....................................................................................................................

29

I. Preparation for Operation/Start-Up ...........................................................................................

33

J.

Preoperational Test ...................................................................................................................

34

K. Preoperational Instructions ........................................................................................................

36

L.

CompressedAir Requirements ..................................................................................................

36

M. Shutdown Instructions ...............................................................................................................

37

SECTION IV

 

SERVICE/PARTS INFORMATION ......................................................................

38

A. Service .....................................................................................................................................

38

B. Parts ........................................................................................................................................

38

SECTION V

 

WARRANTY INFORMATION...............................................................................

39

A.

Returning Warranty Cards .........................................................................................................

39

B.

Warranty ..................................................................................................................................

39

C.

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

39

SECTION VI

 

ROUTINE MAINTENANCE ..................................................................................

41

A. Cleaning ...................................................................................................................................

41

B. Adjustments .............................................................................................................................

43

C. Lubrication ...............................................................................................................................

43

SECTION VII

 

MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS ...............................

44

A. Phase 7 ....................................................................................................................................

44

B. DualTimer ................................................................................................................................

44

SECTION VIII

 

DATA LABEL INFORMATION .............................................................................

45

SECTION IX

 

REVERSING TIMER SPIN/DWELL ADJUSTMENTS.....................................

46

SECTION X

 

PROCEDURE FOR FUNCTIONAL CHECK

 

OF REPLACEMENT COMPONENTS ................................................................

47

SECTION XI

 

SENSOR ACTIVATED FIRE EXTINGUISHING (S.A.F.E.) SYSTEM ...........

49

SECTION I

IMPORTANT INFORMATION

A. RECEIVING AND HANDLING

The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or optional box) as a means of preventing damage in transit. Upon delivery, the dryer and/or packaging, and wooden skid should be visually inspected for shipping damage. If any damage whatsoever is noticed, inspect further before delivering carrier leaves.

Dryers damaged in shipment:

1.ALL dryers should be inspected upon receipt and before they are signed for.

2.If there is suspected damage or actual damage, the trucker’s receipt should be so noted.

3.If the dryer is damaged beyond repair, it should be refused. Those dryers, which were not damaged in a damaged shipment should be accepted, but the number received and the number refused must be noted on the receipt.

4.If you determine that the dryer was damaged after the trucker has left your location, you should call the delivering carrier’s freight terminal immediately and file a claim. The freight company considers this concealed damage. This type of freight claim is very difficult to get paid and becomes extremely difficult when more than a day or two passes after the freight was delivered. It is your responsibility to file freight claims. Dryer/parts damaged in transit cannot be claimed under warranty.

5.Freight claims are the responsibility of the consignee, and ALL claims must be filed at the receiving end. ADC assumes no responsibility for freight claims or damages.

6.If you need assistance in handling the situation, please contact the ADC Traffic Manager at +1 (508) 678-9000.

IMPORTANT: The dryer must be transported and handled in an upright position at ALL times.

3

B. SAFETY PRECAUTIONS

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

WARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY OR FIRE COULD RESULT.

1.DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

2.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.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.Dryer(s) must be exhausted to the outdoors.

6.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 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 rubberlike materials. Drying in a heated basket (tumbler) may damage plastics or rubber and may be a fire hazard.

4

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 do so will VOID THE WARRANTY.

9.UNDER NO CIRCUMSTANCES should the dryer door switches, the lint drawer switch, or the heat safety circuit ever be disabled.

WARNING: PERSONAL INJURY OR FIRE COULD RESULT.

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.DO NOT operate steam dryers with more than 125 psi (8.62 bar) steam pressure. Excessive steam pressure can damage the steam coil and/or harm personnel.

13.Replace leaking flexible steam hoses or other fixtures immediately. DO NOT operate the dryer with leaking flexible hoses. PERSONAL INJURY MAY RESULT.

14.READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE DRYER.

15.For safety, proper operation, and optimum performance, the dryer must not be operated with a load less than sixty-six percent (66%), 112 lb (51 kg) of its rated capacity.

WARNING: YOU MUST DISCONNECTAND LOCKOUT THE ELECTRIC SUPPLYAND THE GAS SUPPLY OR THE STEAM SUPPLY BEFOREANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOWACCESS FOR CLEANING,ADJUSTING, INSTALLATION, OR TESTING OFANY EQUIPMENT 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).

5

SECTION II

SPECIFICATIONS/COMPONENT IDENTIFICATION

A. SPECIFICATIONS

MAXIMUM CAPACITY (DRY WEIGHT)

 

170 lb

 

 

77.11 kg

TUMBLER DIAMETER

 

51-1/2”

 

130.81 cm

TUMBLER DEPTH

 

 

 

42-1/2”

 

107.95 cm

TUMBLER VOLUME

 

 

 

51.20 cu ft

 

1,449.82 L

TUMBLER/DRIVE MOTOR

 

1 hp

 

 

0.75 kW

BLOWER/FAN MOTOR

 

7-1/2 hp

 

 

5.59 kW

DOOR OPENING (DIAMETER)

 

31-3/8”

 

 

79.69 cm

DOOR SILL HEIGHT

 

 

 

33-3/8”

 

 

84.77 cm

WATER CONNECTION

 

3/4”-11.5 NH

(North America)

 

 

 

 

 

 

3/4” B.S.P.T. (Outside North America)

DRYERS PER 20’/40’ CONTAINER

 

 

3 / 7

 

DRYERS PER 48’/53’ TRUCK

 

 

8 / 9

 

 

VOLTAGE AVAILABLE

 

208-575V

3,4w

50/60 Hz

 

APPROXIMATE NET WEIGHT

 

2,103 lb

 

953.90 kg

 

APPROXIMATE SHIPPING WEIGHT

2,269 lb

 

1,029.20 kg

Gas

AIRFLOW

 

 

60 Hz

3,700 cfm

 

104.77 cmm

 

 

 

 

50 Hz

3,083 cfm

 

87.30 cmm

 

 

 

 

 

 

 

HEAT INPUT

 

 

 

550,000 Btu/hr

138,598 kcal/hr

 

EXHAUST CONNECTION (DIAMETER)

18”

 

 

45.72 cm

 

COMPRESSED AIR CONNECTION

1/4” Quick Connection

 

COMPRESSED AIR VOLUME

 

4.25 cfh

 

 

0.12 cmh

 

INLET PIPE CONNECTION

 

1-1/2” F.N.P.T.

 

 

 

 

 

 

1-1/2” B.S.P.T. (CE and Australia Only)

 

VOLTAGE AVAILABLE

 

416-460V

3,4w

50/60 Hz

Electric

APPROXIMATE NET WEIGHT

 

2,103 lb

 

953.90 kg

APPROXIMATE SHIPPING WEIGHT

2,269 lb

 

1,029.20 kg

AIRFLOW

 

 

60 Hz

3,700 cfm

 

104.77 cmm

 

 

 

 

 

 

 

 

 

50 Hz

3,083 cfm

 

87.30 cmm

 

EXHAUST CONNECTION (DIAMETER)

18”

 

 

45.72 cm

 

COMPRESSED AIR CONNECTION

1/4” Quick Connection

 

COMPRESSED AIR VOLUME

 

4.25 cfh

 

 

0.12 cmh

 

 

 

OVEN SIZE

 

 

 

 

 

 

kW

 

Btu/hr

 

kcal/hr

 

 

 

 

 

126

 

429,900

 

108,300

 

 

 

 

 

VOLTAGE AVAILABLE

 

208-575V

3,4w

50/60 Hz

 

APPROXIMATE NET WEIGHT

 

2,259 lb

 

1,024.67 kg

 

APPROXIMATE SHIPPING WEIGHT

2,425 lb

 

1,099.96 kg

Steam

AIRFLOW

 

 

60 Hz

4,400 cfm

 

124.59 cmm

 

 

 

 

50 Hz

3,666 cfm

 

103.80 cmm

 

 

 

 

 

 

 

STEAM CONSUMPTION

 

725 lb/hr

 

328.85 kg/hr

 

OPERATING STEAM PRESSURE

125 psi max

 

8.62 bar

 

EXHAUST CONNECTION (DIAMETER)

20”

 

 

50.80 cm

 

COMPRESSED AIR CONNECTION

1/4” Quick Connection

 

COMPRESSED AIR VOLUME

 

4.25 cfh

 

 

0.12 cmh

 

BOILER HORSEPOWER (NORMAL LOAD)

19 Bhp

 

 

 

 

SUPPLY CONNECTION

 

1-1/2” F.N.P.T.

 

 

 

RETURN CONNECTION

 

1-1/2” F.N.P.T.

 

 

Shaded areas are stated in metric equivalents

 

 

 

5/26/06

IMPORTANT: Gas dryers and steam dryers must be provided with a clean, dry, and regulated 80 psi

± 10 psi (5.51 bar ± 0.68 bar) air supply.

NOTE: ADC reserves the right to make changes in specifications at any time without notice or obligation.

6

ADC AD-170SE User Manual

Specifications – Gas and Steam

NOTE: ADC reserves the right to make changes in specifications at any time without notice or obligation.

7

B. COMPONENT IDENTIFICATION

1. Dryer Front View

Illus. No. Description

1Microprocessor Control/Keypad Panel Assembly (controls)

2Control (top access) Door Assembly

3Main Door Assembly

4Lint Drawer

5Lint Door

6Wire Diagram (located behind control door)

7Data Label and Installation Label

8Top Console (module) Assembly

8

2. Dryer Rear View

Illus. No. Description

1Basket (drive) Motor Assembly

2Blower Motor Mount Assembly

3Idler Bearing Mount Assembly

4Basket (tumbler) Bearing Mount Assembly 5* Electric Service Relay Box

6Heating Unit

7Data Label and Installation Label

81/8” Compressed Air Supply Inlet (behind gusset)

9Side Access Opening

10Front Access Opening

11Impellor (fan) Assembly

*Electric service connections are made in this box.

9

SECTION III

INSTALLATION PROCEDURES

Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, the installation must conform to applicable American National Standards: 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 CSA C22.1-1990 or LATEST EDITION (for Electrical Connections).

A. 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 CodeANSI.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.

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.The 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: The 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.

10

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: The 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).

B. 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 remove skid from the dryer, locate and remove the four (4) lag bolts securing the base of the dryer to the wooden skid. Two (2) are at the rear base, and two (2) are located in the bottom of the lint chamber. To remove the two (2) lag bolts located in the lint chamber area, remove the lint drawer and the three (3) Phillips head screws securing the lint door in place.

1.Leveling Dryer

a.To level the dryer, place 4-inch (10.16 cm) square metal shims or other suitable material under the base pads. It is suggested that the dryer be tilted slightly to the rear (refer to the illustration above).

b.The V-belts are disconnected from the basket (tumbler) drive motor for shipping. Reconnect V-belts before starting the dryer.

11

2.If more headroom is needed when moving the dryer into position, the top console (module) may be removed. To Remove Top Console (module)...

a.Disconnect the ground wire (A in the illustration below) located at the rear upper left corner of the dryer.

b.Remove the eight (8) sets of nuts and washers (B in the illustration below) holding the console (module) to the base.

c.Disconnect the white plug connector (C in the illustration below) located on the top of the rear electric service/relay box (provides power to the heat circuit).

d.Disconnect air connection from the 3-way micro valve.

e.Lift the console (module) off of the dryer base.

IMPORTANT: The dryer must be transported and handled in an upright position at ALL times.

12

C. DRYER ENCLOSURE REQUIREMENTS

Even though a 12-inch (30.48 cm) clearance is acceptable, it is recommended that the rear of the dryer be positioned approximately 24-inches (60.96 cm) from the nearest obstruction (i.e., wall) for ease of installation, maintenance, and service. Bulkheads and partitions should be made from noncombustible materials. 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. A 2-inch (5.08 cm) clearance is required between the bulkhead facing and the top of the dryer.

NOTE: Bulkhead facing should not be installed until after the dryer is in place. Ceiling area must be located a minimum of 12-inches (30.48 cm) above the dryer top console (module) and 18-inches (45.72 cm) for steam models.

NOTE: When fire sprinkler systems are located above the dryers, a minimum of 18-inches (45.72 cm) above the dryer console (module) is required. Dryers may be positioned sidewall to sidewall, however, 1 or 2-inches (2.54 or 5.08 cm) is suggested for ease of installation and maintenance. Allowances must be made for the opening and closing of the control door and the lint door.

13

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

Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An unrestricted source of air is necessary for each dryer. An airflow of 3,700 cfm (cubic feet per minute [104.77 cmm] [cubic meters per minute]) must be supplied to each gas dryer and 4,400 cfm (124.59 cmm) must be supplied to each steam dryer. As a general rule, an unrestricted air entrance from the outdoors (atmosphere) of a minimum of 4 square feet (0.37 square meters) is required for each gas dryer and a minimum of 4.75 square feet (0.44 square meters) for each steam dryer.

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 six (6) dryers, 2 unrestricted openings measuring 3 feet by 4 feet (12 square feet [0.91 meters by 1.22 meters] [1.11 square 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 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 will VOID THE WARRANTY.

14

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