ADC Phase 5 Microprocessor AD-170 Service Manual

American Dryer Corporation88 Currant RoadFall River, MA 02720-4781Telephone: (508) 678-9010 / 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

7B. Electrical and Gas RequirementsIt is your responsibility to have ALL electrical connections made by a properly licensed and competentelectrician t

8B. Control BoxLifting the control door and opening the computer panelwill reveal the control box. Inside the control box areALL the electronic contr

9E. Drive MotorThe T.E.F.C. (totally enclosed, fan-cooled) drive motoris located approximately lower center of the dryer. It sitson an adjustable bas

10H. Idler Assembly(Viewing from the rear of the dryer) the idler assemblyis located approximately on the lower center of the dryer.The idler assembly

11L. Sail Switch (Gas Models ONLY)The sail switch is located on the front of the burnerbox. A sail switch consists of a round damper plate ona lever

12O. Lint DrawerThe lint drawer is a pullout type and is located at thebottom of the dryer in the lint compartment. Simplygrab the lint drawer handle

13SECTION VServicingIntroductionALL electrical/mechanical service or repairs should be made with the electrical power to the dryer disconnected(power

14A. Computer ControlsTo Replace Computer1. Disconnect power to the dryer.2. Disconnect main power harness from rear of computer by squeezing locking

154. Peel paper backing off new keyboard label assembly.5. Holding the new keyboard label assembly close tothe panel, insert the keyboard ribbon throu

Retain This Manual In A Safe Place For Future ReferenceAmerican Dryer Corporation products embody advanced concepts in engineering, design, and safety

16B. Ignition ControlsTo Remove Spark Ignitor (see above burner illustration)1. Discontinue power to dryer.2. Disconnect HV connector and flame probe

17To Replace Gas Valve (see burner illustration on page 16)1. Discontinue power to dryer.2. Close shut-off valve(s) in gas supply line.3. Disconnect g

18To Test and Adjust Gas (Water Column) PressureThere are two (2) types of devices commonly used to measure water column pressure. They are spring/me

19To Convert from Natural Gas to L.P. GasNOTE: ALL dryers are sold as natural gas, unless otherwise specified at the time the dryerorder was placed.

20To Replace Burner Tubes1. Refer to "Replace Gas Valve"and follow steps 1 through 6.2. Remove four (4) screwssecuring manifold rest andremo

21To Replace DSI Module1. Discontinue power to the dryer.2. Remove the wires connected to the terminalstrip at the bottom of the module.3. Remove the

22To Replace Lint Compartment Hi-Heat Protector (225 Degree) ThermostatThis thermostat is part of the "sensor bracket assembly" and is secur

23To Replace Sail Switch1. Disconnect power to dryer.2. Remove the two (2) screws which hold sail switch box cover to sail switch box.3. Disconnect th

24IMPORTANT: Under no circumstances should the door switch be disabled.To Replace Main Door Assembly1. Remove screws holding main door to maindoor hin

25To Replace Front Panel1. Discontinue power to dryer.2. Remove main door switch and bracket assembly.3. Follow procedure for removal of main door ass

IMPORTANTYOU MUST DISCONNECT and LOCKOUT THE ELECTRICSUPPLY and THE GAS SUPPLY or THE STEAM SUPPLY BEFORE ANYCOVERS or GUARDS ARE REMOVED FROM THE MAC

26F. PulleysTo Replace Tumbler Pulley1. Loosen V-belts. Rotate pulley and roll V-belts out of grooves.2. Remove cap screws from the bushings.3. Inser

277. Tighten cap screws progressively. There should remain a gap between the sheave hub and the flange of thebushing.IMPORTANT: Tighten screws evenl

284. Remove bushing, pulley, and key.5. Assemble bushing and sheave as shown in figure "B". When cap screws are loosely inserted, bushing r

29Basket Alignment (Lateral) (Side to Side Adjustment)1. Discontinue power to dryer.2. Remove backguard.3. Loosen rear pillow block bearing bolts (C).

30IMPORTANT: Never strike the shaft directly with a hammer.8.Remove basket from basket support.a. Remove the bolt in the center of the basket back wal

31To Replace Front Basket Support Pillow Block Bearing1. Discontinue power to dryer.2. Remove backguard.3. Follow steps 3 through 6 from "Replace

32To Replace Rear Idler Shaft Pillow Block Bearing1. Follow steps 1 through 3 from "To Replace Front Idler Shaft Bearing".2. Remove retainin

33V-Belt Tension Adjustment (Motor to Idler)1. Discontinue power to dryer.2. Loosen the nuts on the four (4) studs holding the drive motor mount to th

346. Align motor pulley with idler pulley and align motor shaft with idler shaft and tighten bolts.7. Replace belts and adjust belt tension.8. Retight

35K. Impellor1. Discontinue power to the dryer.2. Remove the left side panel to access the fan shaft mount assembly.3. Remove the two (2) left handed

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLEVAPOR AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHERAPPLIANCE.FOR YOUR SAFETYDO NOT DRY MOP HEADS IN

36The information provided will help isolate the most probable component(s) associated with the difficulty described.The experienced technician realiz

373. Dryer will not start, but computer display indicators are on.A. Failed contactorsB. Failed arc suppressor (A.S.) boardC. Failed microprocessor (c

386. Dryer operates, probe sparks, but gas does not flow.A. Dryer gas shut-off valve is closedB. Failed gas valve (open coil in valve)C. Loose wiring

399. Thermal overload for drive motor is tripping.A. Either an exceptionally low or high voltage supplyB. Motor bearing failureC. Bearing failure in d

4012. Display reads "dSFL". Dryer Sensor Circuit Failure.A. Check 1/8 amp fuse on computerB. Faulty microprocessor temperature sensor probe

41The information provided will help isolate the most probable components associated with the difficulty described.The experienced technician realizes

42A. Phase 5 OPL System DiagnosticsAll major circuits, including door, microprocessor temperature sensor, heat and motor circuits are monitored.The Ph

431. Blower Motor Circuit Indicator - indicator dot is on whenever a cycle is in progress.2. Heat Controller Indicator - indicator dot is on whenever

442. "MTR" Output LED Indicator -If the dryer is started and the motor is not operating, yet both the microprocessor controller displaymotor

455. "DOOR" LED Indicator -The indicator should be on all the time (even if the dryer is not returning) unless the main door or lintdrawer i

Table of ContentsSECTION IImportant Information ...

46C. LED Display/CodesThe LED display informs the user of cycle status and program verification and displays important diagnosticand fault codes.1. Di

47Illus. No 5 - REVERSE INDICATOR - This indicator is functional for models with the reversing action optiononly. This indicator will be on when the

48donE Drying or Cooling Cycles Complete or Dryer is in Anti-Wrinkle Programdoor Door Circuit is Open or Fault in Door Switch Circuitdr Drying Cycle i

49SEFL Rotational Sensor Circuit FailureSEn Rotational Sensor SelectedSPIn-tInE Spin TimeSr Select ReverseStoptInE Stop TimetEnP-tInE Temperature Dis

502. Information entered is sent to the microcontroller via the keyboard.3. The input information is sorted/processed and executed by the microcompute

511. No Display ConditionA. Check main fuses or circuit breakerB. Check blower motor overload...If tripped, resetC. Check fuse 1 or fuse 2 and if eith

523. Drive motor works in forward mode but does not reverse, blower motor runs.A. If computer dot (second one from left) does not come on, check progr

534. Blower motor does not operate, drive motor runs.A. Check for voltage across terminals A1 and A2 of the impellor contactor. This is the single co

546. "No Heat" drive and blower motors run, display reads normal (Steam Models).A. Check for voltage across terminal block nos 3 and 7.If no

55B. If voltage is not evident at both points (nos. 1 & 2 of the 15 pin modular connector located incomputer box area) with respect to ground.If n

SECTION VServicing ...

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 insure proper service/parts informa

58HOW TO USE A MANOMETER1.With dryer in non-operating mode, remove plug on the gas valve pressure tap.2.Attach plastic tubing to pressure tap. Fittin

59D. AD-170SE Tool ListStraight Head ScrewdriverPhillips Head ScrewdriverSensor Pin and Socket Tool (P/N 122801)Pliers1/4" Nut Driver3/8" Op

ADC 450400 1- 02/27/98-50

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/or schedule should be established for periodic inspection, cleaning, and removal of lint fromvarious areas of the dryer, as

56 MONTHS Inspect and remove lint accumulation in customer-furnished exhaustduct work system. Inspect exhaust back draft dampers to insure theyare no