American Dryer Corp. Dyer AD-26 Service Manual

American Dryer Corporation88 Currant RoadFall River, MA 02720-4781Telephone: (508) 678-9000 / Fax: (508) 678-9447E-mail: [email protected]

6Installation should be performed by competent technicians in accordance with local and state codes. In theabsence of these codes, installation must

7The dryer installation must meet the AMERICAN NATIONAL STANDARD, NATIONAL FUEL GAS CODEANSI Z223.1-LATEST EDITION, as well as, local codes and ordina

8SECTION IVDescription of PartsA. Control Panel (Microprocessor)Lifting the control door will reveal the control panel as-sembly. Opening the control

9B. Reversing Relay PanelLifting the control door will reveal the reversing relaybox. Located on the back of the relay box is the revers-ing relay pa

10D. Gas Burner AssemblyGas-heated dryers are equipped with a gasburner assembly consisting of three (3) burnertubes, gas valve, glo bar, flame sensor

11E. Drive MotorThe TEFC (totally enclosed, fan-cooled) drive mo-tor is located in the front left corner (viewing fromfront) behind the front panel of

12G. Drive Shaft Assembly(Viewing from the front of the dryer.) Behind front panelon the left side of the dryer, you can view the drive shaftassembly

13H. Idler Shaft Assembly(Viewing from the front of the dryer.) Behind the front panel on the right side of the dryer you will view theidler shaft ass

14J. Main Door SwitchThe main door switch is mounted to the front panelbehind the main door. When the main door opens,the switch will also open, prev

15K. Sail Switch (Gas Models Only)The sail switch is located on the front of the burner box. A sail switchconsists of a round damper plate on a lever

Retain This Manual In A Safe Place For Future ReferenceReplacement parts can be obtained from your distributor or the ADC factory. When ordering repl

16M. Automatic Reset ThermostatThis is located inside the dryer in the lint com-partment above the lint screen. This thermostatsenses the heated air

17O. Lint Drawer SwitchThe lint door switch is located in the lint compartment and at-tached to the side of the lint coupe. The lint door switch ensu

18SECTION VServicingIntroductionALL electrical and mechanical service or repairs should be made with the electrical power to the dryerdisconnected (po

19To Replace Keyboard Label Assembly1. Discontinue power to dryer.2. Unplug keyboard ribbon from rear of computer.3. Slowly peel off and remove key

20B. Ignition ControlsTo Remove Hot Surface Ignitor (seeburner illustration on page 10)1. Discontinue power to dryer.2. Disconnect wire from S1 and

21To Replace Gas Valve (See burner illustration on page 10)1. Discontinue power to dryer.2. Close shut-off valves in gas supply line.3. Disconnect

22a. Remove the slotted vent cap on the top of the valve.b. Turn the slotted adjustment screw located on the top of the valve next to the terminals

23To Replace HSI Module1. Discontinue power to the dryer.2. Remove the wires connected to the terminal strip at the bottomof the module. (Mark correc

24To Replace Sail Switch1. Discontinue power to dryer.2. Remove the two (2) screws which hold the sail switch box cover to sail switch box.3. Disco

25CAUTION: Do not abort this switch by taping or screwing sail switch damper to burner. PERSONAL INJURY OR FIRE COULD RESULT.E. Front Panel and Ma

IMPORTANTYOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GASSUPPLY or THE STEAM SUPPLY BEFORE ANY COVERS or GUARDS AREREMOVED FROM THE MAC

26IMPORTANT: Do not press hard or silicone thickness between the glass and door will be reduced, resulting in poor bonding.6. The door asse

277. The door assembly should now be put in an area where it will not be disturbed for a few hours. This will give the silicone a chance to harden.N

285. Reestablish power to dryer.F. PulleysTo Replace Drive Shaft Pulley1. Discontinue power to dryer.2. Remove front panel from dryer (Follow frontre

2910. Remove the pulley and key.NOTE: A gear pulley may be required to remove the pulley.11. Remove cap screws from bushing.12. Insert cap screws in

30NOTE: One wrench must be on the transtorque and one on the axle. The wrench on the transtorqueshould have pressure applied in a counterclockwise d

31IMPORTANT: Tighten screws evenly and progressively. Never allow the sheave to be drawn incontact with the flange of the bushing. This gap should

32IMPORTANT: Tighten screws evenly and progressively. Never allow the sheave to be drawn incontact with the flange of the bushing. This gap should

334. Place a level on the shafts to verify if level.5. Measure distance between basket and wrapper 1/2" to 3/4" gap should be derived.6. Loo

348. Retighten motor mount bolts and jam nuts.9. Assemble front panel lint door assemblies back to dryer.10. Reestablish power to dryer.To Replace Dri

355. Loosen the tension on the blower motor v-belts by loosening the jam nuts and then the adjustment bolt.6. Remove the bolts securing the motor moun

WARNINGThe dryer must never be operated with any of the back guards, outer tops, or servicepanels removed. PERSONAL INJURY or FIRE COULD RESULT.IMPOR

362. Remove the front panel. Follow front panel removal instructions on page 27 for removal.3. Remove thruster wheel assembly.4. Remove the wheel fro

375. Remove the four (4) nuts mounting the impeller assembly to the blower housing.6. Remove the two (2) set screws and two (2) left hand jam nuts tha

38SECTION VIThe information provided will help isolate the most probable components associated with the difficulty described.The experienced technicia

39C. Restriction in exhaust system.D. Insufficient makeup air.E. Poor housekeeping. Dirty or clogged lint screen.F. Washing machine extractors are no

40C. Open circuit in either one of two (2) wires leading from the sensor probe to the computer1. Connection at sensor bracket assembly connector.2. Co

41SECTION VIIPHASE 6 OPL SYSTEM DIAGNOSTICS IMPORTANT: You must disconnect and lock out electric, gas or steam supply before any covers orguards

427. bURNER FLAME FAIL- This routine allows two (2) Flame out retries to occur before proceedinginto the error. The count of two (2) will be establi

43NOTE: RPM- This routine monitors the timing response from the existing rotational sensor input andderives a RPM measurement. To display this RPM

445. L.E.D DISPLAY INDICATOR NUMBER 5a. Air Jet Circuit - OPTIONAL1.This indicator dot is on at the end of the dryer cycle for approximately 60 second

451. "FAN" (BLOWER) Output L.E.D. IndicatorA. If the dryer is started and the blower motor is not operating, yet the Phase 6 OPL microproces

Table of ContentSECTION IImportant Information...

466. "FUSE" (MAIN FUSE) Input L.E.D. IndicatorA. Should be on ALL the time (even if the dryer is not running.) If the L.E.D. is not on; the

4712. "FLAME" (bURNER CONTROL FAIL) Input L.E.D. IndicatorA. This routine monitors the ignition control's gas valve output response. I

48C. L.E.D. CODES1. Display CodesAALL REVANTI WRINKL dELAY TIMEANTI WRINKL GUARd ACTIVEANTI WRINKL GUARd ON TIMEAUTO CYCLEbbURNER CONTROL FAILbURNER F

492. FAULT CODESbURNER CONTROL FAIL- GAS MODELS ONLY POWER (24VAC) IS NOT EVIDENT AT GAS VALVEbURNER FLAME FAIL- The Phase 6 Microprocessor Contro

50D. Computer Logic and Wiring Diagram1. Operator enters desired selections.2. Information entered is sent to the microprocessor via the keyboard.3. T

511. No Display ConditionA. Check position of emergency stop to verify it is in operating position (pull or twist for operatingposition).B. Check fuse

522. Drive motor reverses but does not forward, blower motor runsA. If computer dot (first dot on the left) does not come on replace the computer.B. C

53If there is voltage present at the two BS1 terminals, the problem is bad wires or terminationsbetween the two BS1 terminals and the coil (A1 and A2)

548. MicroprocessorA. Replace the temperature sensor underneath the basket on a bracket (the bullet shaped device).B. If it still read "TEMP SENS

55IMPORTANTMANUAL RESET HI-LIMIT INSTRUCTIONSFOR PHASE 6 MODELSThis dryer was manufactured with a manual reset burner hi-limit thermostat which is mon

SECTION VITroubleshooting ...

56SECTION VIIITechnical InformationThe following section contains various technical information important to the service person in servicing andmainta

57B. DATA LABELContacting American Dryer Corporation (ADC)When contacting ADC, certain information is required to ensure proper service and parts inf

58C. HOW TO USE A MANOMETER1. With dryer in nonoperating mode, remove plug on the gas valve pressure tap.2. Attach plastic tubing to pressure tap. F

59D. AD-95/ML-95 TOOL LISTStraight Head ScrewdriverPhillips Head ScrewdriverSensor Pin and Socket Tool (P/N 122801)Pliers1/4" Nut Driver3/8"

ADC 450188 1- 01/14/99-25 2- 09/15/99-25

3SECTION IA. Safety Precautions1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any otherappliance.2.

4A. CleaningA program and schedule should be established for periodic inspection, cleaning, and removal of lint from variousareas of the dryer, as wel

5WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK CAN CREATE A POTENTIAL FIRE HAZARD.WARNING: Do not obstruct the flow of combustion and