American Dryer Corp ADG-320D User Manual

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If voltage is present:

a.Manually push down the top of the contactor. If motor turns, replace the contactor.

b.If motor does not turn, problem is bad wire(s) or termination(s) from contactor down to the motor or faulty motor.

NOTE: Make sure high voltage(110-240V)is present across the top half of the contactor.

If voltage is not present:

a.Check for voltage across the appropriate 9-pincomputer connector, pin #4 and the “GND” terminal of the computer. If voltage is present, problem is bad wire or termination on that blue motor output wire (pin #4) to the contactor coil. Problem could also be a bad wire or termination on the green ground wire from the side of the coil to terminal block #7. If no voltage, replace computer.

C.No Heat Condition (gas)

1.Check to see if Direct Spark Ignition (DSI) module fault indicator light emitting diode (L.E.D.) is red. If red, refer to ADC DSI troubleshooting manual (ADC P/N: 450142).

2.Check for voltage across the “TH” and “GND” terminals of the module. If voltage is present, refer to ADC DSI technical manual (ADC P/N: 450142).

NOTE: In the following steps, when checking the voltage, leave one of your meter leads attached to terminal block #7 or any good ground connection. Make sure sail switch damper is closing properly.

IMPORTANT: By no means should the sail switch be tampered with or bypassed when under normal drying conditions!!

3.Check for voltage across both terminals of the sail switch. If voltage is present on both terminals, check for bad wire or termination on the red wire that leaves the sail switch and passes through the gas valve train connector to the “TH” terminal on DSI module. If voltage is present on one (1) terminal of the sail switch, replace the sail switch.

4.Check for voltage across both terminals of the burner hi-limitswitch. If voltage is present on both terminals, check for bad wire or termination on the red wire from the burner hilimit switch through the J19 connector (top basket [tumbler]) or the J20 connector (bottom basket [tumbler]), to the sail switch. If voltage is present on one (1) terminal of the burnerhi-limitswitch, replace thishi-limitswitch.

5.Check for voltage across both terminals of the basket (tumbler) hi-limitswitch. If voltage is present on both terminals, check for bad wire or termination on the red wire from the basket (tumbler)hi-limitswitch through the J19 connector (top basket [tumbler]) or J20 connector (bottom basket [tumbler]) to the burnerhi-limitswitch. If voltage is present on only one (1) terminal of the basket (tumbler)hi-limitswitch, replace the basket (tumbler)hi-limitswitch.

6.Check for the “heat out” voltage of the computer upper Dual Microprocessor Controller (DMC) connector J1 pin #1 for the top basket (tumbler), or the lower DMC connector J12 pin #1 for the bottom basket (tumbler). If voltage is present on the “heat out” pin of the computer, check for bad wire or termination on the red wire from the computer “heat out” which passes through the I/O connector in the back of the computer box to the basket (tumbler) hi-limitswitch.

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7.If no voltage, replace the computer.

D. “No Heat” Condition (electric models)

NOTE: The following sectionsmust be performed with the appropriate output light emitting diode (L.E.D.) and appropriate L.E.D. indicator dots on. Make sure sail switch damper is closing properly.

IMPORTANT: By no means should the sail switch be tampered with or bypassed when under normal drying conditions!!

1.Check for the incoming voltage across the top of the oven contactor. This voltage should be 208,240,380, etc... If this incoming voltageis not present, check the external circuit breaker or the dual element time delay fuses.

2.Check for the 24 volts across the coil of the oven contactor. If voltage is present, replace the oven contactor or the oven contactor coil.

3.Check for voltage across both terminals of the sail switch. If voltage is present on both terminals, check for bad wire or termination on the red wire that leaves the sail switch and goes to the oven contactor coil. If voltage is present on one (1) terminal of the sail switch, replace the sail switch.

4.Check for voltage across both terminals of the burner hi-limitswitch. If voltage is present on both terminals, check for bad wire or termination on the red wire from the burnerhi-limitswitch through the J19 connector (top basket [tumbler]) or the J20 connector (bottom basket [tumbler]), to the sail switch. If voltage is present on one (1) terminal of the burnerhi-limitswitch, replace thishi-limitswitch.

5.Check for voltage across both terminals of the basket (tumbler) hi-limitswitch. If voltage is present on both terminals, check for bad wire or termination on the red wire from the basket (tumbler)hi-limitswitch through the J19 connector (top basket [tumbler]) or J20 connector (bottom basket [tumbler]) to the burnerhi-limitswitch. If voltage is present on only one (1) terminal of the basket (tumbler)hi-limitswitch, replace the basket (tumbler)hi-limitswitch.

6.Check for the “heat out” voltage of the computer upper Dual Microprocessor Controller (DMC) connector J1 pin #1 for the top basket (tumbler), or the lower DMC connector J12 pin #1 for the bottom basket (tumbler). If voltage is present on the “heat out” pin of the computer, check for bad wire or termination on the red wire from the computer “heat out” which passes through the I/O connector in the back of the computer box to the basket (tumbler) hi-limitswitch.

7.If no voltage, replace the computer.

E. “No Heat” Condition (steam models)

NOTE: Before proceeding in this section, be sure there is adequate steam pressure being applied to the coil. Adequate air pressure is also necessary (80 psi +/- 10 psi [5.51 bar +/- 0.68 bar]).

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NOTE: In the following steps, when checking the voltage leave one of your meter leads attached to terminal block #7 or any good ground connection.

NOTE: The following sectionsmust be performed with the appropriate output light emitting diode (L.E.D.) and appropriate L.E.D. indicator dots on.

1.Check for voltage across the two (2) black wires of the steam damper solenoid. You can check this voltage at the J21 top basket (tumbler) connector or the J22 connector for the bottom basket (tumbler). If voltage is present and damper is not opening, replace the solenoid.

2.Check for voltage across both terminals of the basket (tumbler) hi-limitswitch. If voltage is present on both terminals, check for bad wire or termination on the red wire from the basket (tumbler)hi-limitswitch through the J19 connector (top basket [tumbler]) or J20 connector (bottom basket [tumbler]) to the burnerhi-limitswitch. If voltage is present on only one (1) terminal of the basket (tumbler)hi-limitswitch, replace the basket (tumbler)hi-limitswitch.

3.Check for the “heat out” voltage of the computer upper Dual Microprocessor Controller (DMC) connector J1 pin #1 for the top basket (tumbler), or the lower DMC connector J2 pin #1 for the bottom basket (tumbler). If voltage is present on the “heat out” pin of the computer, check for bad wire or termination on the red wire from the computer “heat out” which passes through the I/O connector in the back of the computer box to the basket (tumbler) hi-limitswitch.

4.If no voltage, replace the computer.

F. “dOOr” Condition

NOTE: The following sectionsmust be performed with the appropriate output L.E.D. and appropriate L.E.D. indicator dots on.

NOTE: In the following sections, the voltage you are checking for is 24 VAC unless otherwise specified.

NOTE: If the L.E.D. indicator dot is on and the appropriate L.E.D. output lightis not on, replace computer.

NOTE: If the display reads “dOOr,” this indicates that there is an open circuit in the computer’s door switch circuit. This fault display involves the door switch, the computer, the transformer, the lint drawer switch, or the harnesses. If the L.E.D. input light on the component side of the computer is on and you are getting the “dOOr” code, replace the computer.

1.Remove the wires from the door switch and check for continuity while pushing down the plunger of the switch. If no continuity, replace door switch. If continuity, reassemble connections onto the switch.

2.Repeat the same process as in Step #1 for the lint drawer switch.

3.Check for voltage across terminal block #2 and #7. If no voltage is present, replace the 24 volt transformer.

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4.Check for voltage on pin #2 (yellow wire) of the computer 9-pinconnector (top9-pinconnector is for the top basket [tumbler] and bottom9-pinconnector is for the bottom basket [tumbler]). If voltage is present, replace the computer.

5.If the above steps were performed correctly, the problem could be a bad wire(s) or termination(s), from the 24 volt transformer through the I/O J4 (top basket [tumbler]) or J3 (bottom basket [tumbler]) connectors, or to the main and lint drawer switches.

G.“dSFL” Condition

When the display reads “dSFL” it is an indication that there is a fault in the microprocessor’s heat sensing circuit. This circuit includes the microprocessor controller (computer), the temperature sensor, or the wires or connectors leading to and from these two points.

1.Check to see if the 1/8-ampfuse located on the computer is blown. To verify, check with an ohm meter. If no continuity, replace withADC P/N: 136048 fuse. If fuse repeatedly blows out, refer toStep #4.

2.Replace the temperature sensor (ADC P/N: 880111).

3.Discontinue power to the dryer. Disconnect the 9-pinconnector from the computer top basket (tumbler) (top connector) or bottom basket (tumbler) (bottom connector). The temperature sensor is wired into pins 7 and 8 of that9-pinconnector. Check for continuity on each wire from the9-pinconnector to the temperature sensor connector above the lint screen. If there is no continuity on either one of these two wires, the problem is a bad wire or termination from the computer to the temperature sensor bracket.

4.If the computer fuse repeatedly blows, there is a short in one of the sensor wires.

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SECTION V

DATALABEL INFORMATION

A. DATA LABEL

Contact American Dryer Corporation

When contacting American Dryer Corporation, certain information is required to insure proper service/parts information fromADC. This information is on the data label located on the inside of the control door. When contactingADC, please have themodel number andserial number available.

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THE DATA LABEL

1.MODEL NUMBER

The model number is an ADC number, which describes the size of the dryer and the type of heat (gas, electric, or steam).

2.SERIAL NUMBER

The serial number allows ADC to gather information on your particular dryer.

3.MANUFACTURING CODE NUMBER

The manufacturing code number is a number issued by ADC, which describesALL possible options on your particular model.

4.TYPE OF HEAT

This describes the type of heat for your particular dryer: gas (either natural gas or liquid propane [L.P.] gas),electric, or steam.

5.HEAT INPUT (for GAS DRYERS)

This describes the heat input in British Thermal Units per Hour (Btu/hr).

6.ORIFICE SIZE (for GAS DRYERS) Gives the number drill size used.

7.ELECTRIC SERVICE

This describes the electric service for your particular model.

8.GAS MANIFOLD PRESSURE (for GAS DRYERS)

This describes the manifold pressure taken at the gas valve tap.

9.APPLICABLE APPROVAL SEAL(S)

I.E., Canadian Standards Association International.

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B. TESTING AND ADJUSTING GAS PRESSURE

There are two (2) types of devices commonly used to measure water column pressure. They are spring/mechanical-typegauge and manometer. The spring/mechanical-typegaugeis not recommended, because it is easily damaged and not always accurate. A manometer is simply a glass or transparent plastic tube with a scale in inches. When filled with water and pressure applied, the water in the tube rises showing the exact water column pressure.

NOTE: Manometers are available from the factory by orderingADC

Part No. 122804.

1.To Test Gas Water Column Pressure:

a.Connect water column test gauge connection to gas valve pressure tap (1/8” N.P.T.). This pressure tap is located on the outlet (manifold) side of the valve.

b.Start dryer. With burner on, the correct water column reading in inches would be:

Natural Gas ..................................... 3.5 Inches (8.7 mb) water column. Liquid Propane (L.P.) Gas .............. 10.5 Inches (26.1 mb) water column.

2.To Adjust Water Column (W.C.) Pressure (natural gas only, liquid propane [L.P.] gas must be regulated at source):

a.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. Turn clockwise (CW) to increase manifold pressure and counterclockwise (CCW) to decrease.

NOTE: If correct water column pressurecannot be achieved, problems may be due to an undersized gas supply line, a faulty or underrated gas meter, etc.

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C. L.E.D. DISPLAY CODES

A

Automatic Cycle (Slope Program Factor)

ACOn

Accumulative Coin

Adrt

Maximum Auto Dryness Time

AFAt

Amount for Additional Time

AGt

Active Anti-WrinkleGuard Time

AtIn

Accumulative Time

AtSt

Amount to Start

AUtO

Automatic Mode (Patent No. 4,827,627)

b

Automatic Cycle (Heat Loss [offset] Factor)

bCLO

Bad Coin Lockout

bCrS

Bad Coin Reset

bUZ

Buzzer (Tone)

CEL

Degree in Celsius

CLCC

Clear Left Coin Count

COIn

Coin Mode

CrCC

Clear Right Coin Count

donE

Drying and Cooling Cycles Complete or Dryer is in Anti-WrinkleCycle

dOOr

Door Circuit is Open

dSFL

Dryer Sensor Circuit Failure

FAr

Degree in Fahrenheit

FILL

No Cycle in Progress

FLS

Flash Display Active

FrEE

Free Dry Mode

GdLY

Anti-WrinkleDelay Time

Gont

Anti-WrinkleOn Time

Grd

Anti-WrinkleProgram Active

HICd

High Cool Down

Hot

Overheating Condition

LCC

Left Coin Count

LCdE

Left Coin Denomination

LOCd

Low Cool Down

nbUZ

No Buzzer (Tone)

nFLS

No Flash Display

nGrd

No Anti-Wrinkle

nSEn

No Rotational Sensor Selected

PdrY

Percent Dry

PL

Program Location

PLOC

Program Location Automatic Review

PPCd

Permanent Press Cool Down

PP

Permanent Press

PUSH

Amount to Start has been Inserted

rCC

Make Temperature Selection

Right Coin Count

rCdE

Right Coin Denomination

SEFL

Rotational Sensor Circuit Failure

SEn

Rotational Sensor Selected

tFAS

Time For Amount to Start

tInE

Timed Mode

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SECTIONVI

PHASE 5 DUAL MICROPROCESSOR CONTROLLER (DMC)

SYSTEM DIAGNOSTICS

ALL major circuits, including door, lint drawer, microprocessor temperature sensor, heat and motor circuits are monitored. The Phase 5 DMC computer will inform the user, via the light emitting diode (L.E.D.) display and at the outputs of each relay (and door switch circuit) to easily identify failures.

A. DIAGNOSTIC (L.E.D. DISPLAY) FAILURE CODES

1.“dOOr” - indicates door or lint drawer switch circuit is open.

a.Keyboard (touch pad) entry was made while main door is open or

b.There is a fault in the door switch circuit (external of the Phase 5 DMC computer).

2.“dSFL” - indicates a fault in the microprocessor temperature sensor circuit.

a.If a fault is detected in the microprocessor heat sensor circuit, the L.E.D. display will read “dSFL” and the buzzer (tone) will sound for approximately 5 seconds every 30 seconds until...

1)problem is corrected or

2)power to the dryer is discontinued...and the problem is then corrected.

IMPORTANT: The Phase 5 DMC computer has its own internal heat sensing circuit fuse protection located on the back side of the Phase 5 DMC computer. If a “dSFL” condition occurs, check to see if this fuse has blown. If it has,DO NOT replace the entire microprocessor controller (computer). Replace only the fuse and do so only with a1/8-amp(Slo-Blo)fuse only.

NOTE: Once the Phase 5 DMC computer detects a problem in the heat circuit, it updates every30-seconds,so if the problem was a loose connection in this circuit which corrected itself, the “dSFL” condition would automatically be cancelled.

3.“SEFL”

a.Indicates rotational sensor circuit failure, meaning that there is a fault somewhere in the basket (tumbler) rotation detection circuit that the Phase 5 DMC computer program related to this circuit (PL01) is set incorrectly in the active mode (“SEn”) where the dryeris not equipped with the optional rotation sensor andshould be set in the inactive mode (“nSEn”).

NOTE: If the dryer is equipped with the rotational sensor and the display reads “SEFL,” reset by closing and opening the Program Switch (PS). Restart the dryer and if the “SEFL” code appears again, investigate further.

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4.Hot

a.Indicates a possible overheating condition. The Phase 5 Dual Microprocessor Controller (DMC) computer monitors the temperature in the dryer at ALL times. If the Phase 5 DMC computer detects that the temperature in the dryer has exceeded 170º F (77º C), it will disableALL the outputs (shut the dryer down), the tone (buzzer) will sound for approximately5-secondsand the display will read “Hot.” The light emitting diode (L.E.D.) display will continue to read “Hot” until the temperature sensed has dropped to 170º F (77º C) or lower and the Phase 5 DMC computer is manually reset by closing and opening the Program Switch (PS).

B. L.E.D. DISPLAY INDICATORS (DOTS)

The L.E.D. indicator dots located at the top portion of the display (refer to the illustration on page 44) indicate the various microprocessor controller (computer) output functions while a cycle is in progress. These dotsDO NOT necessarily mean that the outputs are functioning. They are only indicating that the function (output)should be active (on).

1. Heat Circuit Indicator - This indicator dot is on whenever the Phase 5 DMC computer is calling for the heating circuit to be active (on).

2. Motor Circuit Indicator - This indicator dot is on whenever a cycle is in progress.

C. PHASE 5 DMC COMPUTER RELAY OUTPUT L.E.D. INDICATORS

There are six (6) L.E.D. indicators (red lights) located on the back side area of the Phase 5 DMC computer (refer to the illustration on page 47), which are identified or labeled “U” (upper) and “L” (lower) for the appropriate circuit (i.e. door, motor, or heat). These L.E.D.s indicate that the outputs of the Phase 5 DMC computer, or in the case of the door/lint drawer circuit, the inputs are functioning.

1.dOOr” L.E.D. Indicators

a.Should be on atALL times (even if dryeris not running) unless the main door or lint drawer is open or there is a problem (open circuit) in either of these circuits.

NOTE: If the dryer is started (the display L.E.D. indicator dots are on) and there are no outputs (heat and/or motor outputs L.E.D.s are off) and the appropriate “dOOr” input L.E.D. is on, the fault is in the Phase 5 DMC computer itself.

NOTE: If the failure was elsewhere, (i.e. dryer’s door/lint drawer circuit) the display would read “dOOr” if a keyboard (touch pad) entry was attempted. If the display L.E.D. indicators are on, and the door L.E.D. input and motor/heat output L.E.D.s are on, and yet the motor and/or heatis not active (on); then the problemis not the door switch circuit or the Phase 5 DMC computer, the problem is elsewhere in the dryer.

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