American Dryer Corp. Phase 6 Microprocessor Controls ML-190HS User manual

ML-190HS

Service Manual

Phase 6

Microprocessor Controls

112999SL/tcosta ADC Part No. 450410

American Dryer Corporation

88 Currant Road

Fall River, MA02720-4781

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

E-mail: techsupport@amdry.com

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.

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.

Important

For your convenience, log the following information:

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

from the various dryer models. Be sure to check descriptions of the parts thoroughly before ordering.

DATE OF PURCHASE MODEL NO.

DISTRIBUTORS NAME

Serial Number(s)

ML-190HS

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.

FORYOUR SAFETY

Do not store or use gasoline or

other flammable vapors or 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 dans le voisinage de cet

appareil ou de yout autre appareil.

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.

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE

VAPOR AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER

APPLIANCE.

FORYOUR SAFETY

DO NOT DRY MOP HEADS IN THE DRYER.

DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.

CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR

THE DRYERS.

WARNING

CHILDREN SHOULD BE SUPERVISED IF NEAR DRYER(S) IN

OPERATION.

DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN

OPERATION.

CAUTION

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.

IMPORTANT

PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the

equipment and 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.

DRYER MUST NEVER BE OPERATED WITHOUT THE LINT

FILTER OR SCREEN IN PLACE, EVEN IF AN EXTERNAL LINT

COLLECTION SYSTEM IS USED.

WARNING

Table of Contents

SECTION I

IMPORTANT INFORMATION ............................................................................... 3

A. Safety Precautions ...................................................................................................................... 3

SECTION II

ROUTINE MAINTENANCE .................................................................................... 5

A. Cleaning ..................................................................................................................................... 5

B. Adjustments ............................................................................................................................... 6

C. Lubrication ................................................................................................................................. 6

SECTION III

INSTALLATION REQUIREMENTS ...................................................................... 7

A. Enclosure,Air Supply, and Exhaust Requirements ........................................................................ 7

B. Electrical and Gas Requirements ................................................................................................. 7

C. Operational Service Check Procedure ........................................................................................ 8

SECTION IV

DESCRIPTION OF PARTS ................................................................................... 10

A. Control Panel (Microprocessor)................................................................................................ 10

B. Control Box ............................................................................................................................. 10

C. HSI Module (Gas Models Only) ............................................................................................... 10

D. Gas BurnerAssembly ............................................................................................................... 11

E. Drive Motor ............................................................................................................................. 11

F. Blower Motor and Impellor (Gas and Steam) ............................................................................ 11

G. Speed Reducing Shaft ............................................................................................................... 12

H. Tumbler (Basket) BearingArrangement ..................................................................................... 12

I. Tumbler (Basket) ...................................................................................................................... 12

J. Main Door Switch .................................................................................................................... 13

K. Sail Switch (Gas Models Only) ................................................................................................. 13

L. Hi-Limit (Gas Models Only) ..................................................................................................... 13

M. Manual Reset Thermostat ......................................................................................................... 14

N. Lint Drawer .............................................................................................................................. 14

O. Lint Drawer Switch ................................................................................................................... 14

P. Steam Damper System ............................................................................................................. 15

Q. CompressedAir Requirements .................................................................................................. 15

SECTION V

SERVICING .............................................................................................................. 16

A. Computer Controls ................................................................................................................... 17

B. Ignition Controls ....................................................................................................................... 18

C. Thermostats .............................................................................................................................. 21

D. Sail SwitchAssembly (Gas Models Only).................................................................................. 23

E. Front Panel and Main DoorAssemblies ..................................................................................... 23

F. Pulleys ...................................................................................................................................... 25

G. Tumbler (Basket)Alignment ...................................................................................................... 28

H. Bearings ................................................................................................................................... 29

I. Basket and Support .................................................................................................................. 32

J. V-Belts ..................................................................................................................................... 32

K. Motors ..................................................................................................................................... 34

L. Impellor .................................................................................................................................... 35

M. Lint DrawerAssembly .............................................................................................................. 35

SECTION VI

TROUBLESHOOTING ........................................................................................... 37

SECTION VII

ELECTRICAL TROUBLESHOOTING ............................................................... 41

SECTION VIII

PHASE 6 OPL SYSTEM DIAGNOSTICS ........................................................... 42

A. Diagnostic (L.E.D. [light emitting diode] Display) Failure Codes ................................................. 42

B. L.E.D. (light emitting diode) Display Indicators .......................................................................... 44

C. Phase 6 OPL Microprocessor Controller Relay Output L.E.D. (light emitting diode) Indicators ... 45

SECTION IX

L.E.D. DISPLAY/CODES ........................................................................................ 46

A. L.E.D. (light emitting diode) Display Operating Status ................................................................ 46

B. Phase 6 OPL Microprocessor L.E.D. (light emitting diode) Displays .......................................... 47

C. L.E.D. Codes ........................................................................................................................... 48

D. Computer Logic and Wiring Diagram ........................................................................................ 49

SECTION X

TECHNICAL INFORMATION .............................................................................. 55

A. Motor Plate (High and LowVoltage) ......................................................................................... 55

B. Data Label ............................................................................................................................... 56

C. Using a Manometer .................................................................................................................. 57

D. Tool List ................................................................................................................................... 58

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.

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 (basket) 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 Electrical Code ANSI/NFPA No. 70-LATEST EDITION.

NOTE: Failure to do so will VOID THE WARRANTY.

7. UNDER NO CIRCUMSTANCES should the dryer door or lint drawer switch(es) or heat safety devices

ever be disabled.

WARNING: PERSONALINJURY or FIRE COULD RESULT.

8. Articles should never be left unattended for an extended period of time in the tumbler (basket) after

completion of the drying and cooling cycles.

WARNING: ARTICLES LEFT IN THE DRYERAFTER THE DRYING and COOLING CYCLES

HAVE BEEN COMPLETED CAN CREATEAFIRE HAZARD.

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

10. Read and follow ALL caution and direction labels attached to the 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.

11. DO NOT operate dryers with more than 125 PSI steam pressure. Excessive steam pressure can damage

steam coil and/or harm personnel.

12. Replace leaking flexible steam hoses or other steam fixtures immediately. DO NOT operate dryer with

leaking flexible hoses. Personal injury may result.

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, anADC

dryer will provide many years of efficient, trouble free, and  most importantly  safe operation.

WARNING: LINT FROM MOST FABRICS IS HIGHLY COMBUSTIBLE. THE

ACCUMULATION OFLINT CAN CREATEAPOTENTIALFIRE HAZARD.

WARNING: KEEPDRYERAREACLEAR 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/screen every third or fourth load.

NOTE: Frequency can best be determined at each location.

DAILY

(beginning) of each work shift.

Clean lint from the drawer/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.

STEAM DRYERS

Clean steam coil fins using compressed air and a vacuum cleaner with brush attachment.

NOTE: When cleaning steam coil fins, be careful not to bend the fins. If fins are bent, straighten by

using a fin comb which is available from local air conditioning supply houses.

90 DAYS

Remove lint from tumbler (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 and/or touching ignitor/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.

WARNING: THEACCUMULATION OFLINT IN THE EXHAUST DUCTWORK CAN

CREATEAPOTENTIALFIRE HAZARD.

WARNING: DO NOT OBSTRUCT THE FLOW OF COMBUSTION and VENTILATION

AIR. CHECK CUSTOMER FURNISHED BACK DRAFT DAMPER IN

EXHAUST DUCT WORK. INSPECT and REMOVEANY 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 shut down

of the heat circuit safety switches or thermostats.

NOTE: When cleaning dryer cabinet(s), avoid using harsh abrasives. Aproduct intended for the

cleaning of appliances is recommended.

B. ADJUSTMENTS

7 DAYS AFTER INSTALLATION and EVERY 6 MONTHS

Inspect bolts, nuts, screws, (bearing set screws), nonpermanent gas connections (unions, shut-off valves, orifices,

and grounding 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 under normal/most conditions the tumbler bearings are permanently

lubricated. It is physically possible to re-lubricate the tumbler bearings if you choose to do so even though this

practice is not necessary. Use Shell Alvania #3 or its equivalent. The tumbler bearings used in the dryer DO

NOT HAVE a great fitting. Provisions are made in the bearing housing for the addition of a grease fitting which

can be obtained elsewhere, or from ADC by ordering kit Part No. 882159, which includes two (2) fittings.

Table of contents

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