American Dryer Corp ADG-320D User Manual

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5.Pull up the two (2) metal fingers where the door switch harness is secured to the frame and right side panel of the dryer.

6.Remove ALL nine (9) screws from the front panel. There are four (4) on the left side, four (4) on the right side, and one (1) at the bottom of the panel behind the control door.

7.Gently remove the front panel assembly from dryer.

8 Reverse procedure to reinstall the front panel assembly.

9. Reestablish power to the dryer.

F. TO REMOVE/REPLACE LINT DRAWER SWITCH ASSEMBLY

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.If the top basket (tumbler) is being serviced, remove the control box assembly (follow Control Box Removal Procedure inSection D).

4.To remove the lint drawer switch box assembly, remove the two (2) screws inside the lint drawer area that secure box to the side of the lint coop.

5.Disassemble the lint drawer box assembly from the dryer by disconnecting the two (2) harness connectors from the box assembly.

6.Remove the two (2) Phillips head screws securing the cover to the switch mounting bracket.

7.Disassemble the switch from the box by removing the two (2) slotted head screws securing switch to the bracket and disconnect the terminals from the switch.

8.Reverse procedure to reinstall the lint drawer switch assembly.

9.Reestablish power to the dryer.

G. TO REMOVE/REPLACE SENSOR BRACKET AND/OR ITS COMPONENTS

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.Pull the front of the sensor bracket forward to remove it from the “S” clips. Pivot bracket downward and assembly will separate from the sensor bracket holder.

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4.To disassemble bracket assembly from dryer, disconnect the two (2) harness connectors.

5.To remove the temperature sensor and the connecting harness with its connectors:

a.Disassemble microprocessor sensor probe from the bracket by removing the 1/4” push on fastener from the outside of the bracket.

b.Remove harness connectors by squeezing sides and pushing towards the center of the bracket.

c.Disconnect the two (2) wires from the 170º thermostat.

d.Reverse procedure to install new sensor probe assembly.

6.To replace the 170º thermostat:

a.Remove the two (2) slotted head screws, washers, and nuts securing the 170º thermostat to bracket assembly.

b.Reverse procedure to install new 170º thermostat.

7.Reverse procedure for reinstalling the sensor bracket.

IMPORTANT: When reinstalling the sensor bracket assembly to the dryer, be sure the internal wiresDO NOT get pinched between the sensor bracket and the holder.

8. Reestablish power to the dryer.

H. TO REMOVE/REPLACE BELT

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.If the top basket (tumbler) is being serviced, remove the control box assembly and belt guard from idler arm (follow Control Box Removal Procedure inSection D).

4.Remove front panel from basket (tumbler) being serviced (follow Front Panel Removal Procedure in

Section E).

5.Loosen the tension on the idler arm adjusting spring by loosening the two (2) 9/16” nuts on the spade bolt.

6.Remove the front motor bushing from the motor shaft by the Phillips head screw. (NOTE: This screw has left hand thread.)

7.Slide belt off the idler bracket and motor shaft.

8.Push belt up into basket (tumbler) area through the brushes and opening in the wrapper.

9.Remove the belt by maneuvering it back and forth and sliding it forward with your hands up through the lint drawer area.

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10.The belt will come out from the front of the dryer between the basket (tumbler) and the wrapper.

11.Reverse procedure to install new belt.

IMPORTANT: Be sure to set the proper belt tension at idler adjustment (followBelt/Idler Tension Adjustment Procedure inSection K).

12. Reestablish power to the dryer.

I. TO REMOVE/REPLACE MOTOR

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control/lint door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.If top basket (tumbler) is being serviced, remove the control box from the dryer (follow Control Box Removal Procedure inSection D).

4.Remove the two (2) 9/16” OD nuts that are on the idler tension spade bolt.

5.Remove the belt from the idler bracket and the motor shaft.

6.Remove the idler bracket; one (1) 1/2” OD bolt in the front and two (2) 1/2” OD bolts on the right side of the bracket.

7.Loosen the four (4) 1/2” OD nuts that hold the motor to the motor mount. These nuts are at the underside of the motor mount assembly.

IMPORTANT: DO NOT remove these four (4) bolts.

8.Remove the lower half of the rear split back guard panel to either the top or the bottom basket (tumbler), depending on which basket (tumbler) is being serviced.

9.Remove the four (4) 7/16” OD nuts, which secure the impellor (fan/blower) cover to the blower housing.

10.Remove the two (2) 7/16” OD nuts and lock washers, which secure the impellor (fan/blower)/shaft bearing to the impellor (fan/blower) housing cover.

11.Loosen the two (2) setscrews on the impellor (fan/blower)/shaft bearing.

12.Remove the impellor (fan/blower)/shaft bearing from the shaft. To do so, wedge a slotted screwdriver blade between the bearing and impellor (fan/blower) cover and walk bearing back off shaft. The impellor (fan/blower) cover will now separate from the impellor (fan/blower) housing.

13.Remove impellor (fan/blower) lock nut (right hand) and lock washer securing impellor (fan/blower) to motor shaft. This can be done by turning the lock nut to the left with an adjustable wrench, or more advisable, with a 1-1/8”deep socket ratchet wrench in an effort to avoid damaging the lock nut.

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14.Align impellor (fan/blower) to the center of the blower housing hole and remove impellor (fan/blower) by grasping fan with both hands and pulling outward. The key will also come off of the motor shaft in this procedure.

15.Return to the front of the dryer and disconnect the wiring harness from the motor.

16.Disassemble the motor from the motor mount by removing the four (4) 1/2” OD nuts (loosened in Step #7) securing the motor to the motor mount. Remove the motor through the front of the dryer. Reverse this procedure for installing the new motor.

17.Reconnect the wiring harness disconnected from the motor in Step #15.

18.Insert key into the motor shaft removed in Step #14, line up keyway in impellor (fan/blower) with the key in the shaft and slide impellor (fan/blower)ALL the way onto shaft.

19.Reinstall the lock washer and lock nut (right hand) removed in Step #13 and tighten securely.

20.Reassemble the impellor (fan/blower)/shaft bearing to the impellor (fan/blower) cover and secure (hand tighten only) with the two (2) lock washers and nuts removed in Step #10. Install the housing cover and bearing assembly onto the shaft and housing. Secure with the four (4) nuts removed inStep #9. Secure the two (2) setscrews on the impellor (fan/blower)/shaft bearing. Be sure that these setscrews are securely in place.

21.The impellor (fan/blower) must now be adjusted/centered in the blower housing. Align the center of the motor shaft at impellor (fan/blower) shaft bearing, so that the center of the motor shaft is exactly8-inches(20.32 cm) from the left side panel.

a.Once the impellor (fan/blower) is properly centered, tighten the two (2) nuts of the impellor (fan/blower)/shaft bearing that were hand tightened in Step #20.

IMPORTANT: Failure to have the impellor (fan/blower) properly aligned can result in the impellor (fan/blower) being damaged.

22.Reinstall the lower half of the rear split back guard panel removed in Step #8.

23.The motor must now be aligned and secured in place. To do so, position the motor so that there is exactly8-inches(20.32 cm) from the center of the motor shaft bushing (Phillips head screw securing the bushing to motor shaft) to the right side panel and tighten the four (4) nuts (loosened inStep #7), which secures the motor to the motor mount.

24.Reassemble idler bracket and hardware removed in Step #6. Assemble the two (2) 9/16” OD nuts onto the idler tension spade bolt removed inStep #4.DO NOT tighten these two (2) 9/16” nuts at this time.

25.Reconnect drive belt and then make necessary belt tension adjustment (follow Belt/Idler Tension Adjustment Procedure inSection K).

26.Reverse Step #1 through Step #3.

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J. TO REMOVE/REPLACE IMPELLOR (FAN/BLOWER)

1.Discontinue power to the dryer.

2.Remove the lint drawer, the control/lint door, and the control box from the dryer (follow Control Box Removal Procedure inSection D).

NOTE: If lower basket (tumbler) is being serviced, the control boxdoes not have to be removed.

3.Loosen, (DO NOT remove) the four (4) 1/2” OD nuts that hold the motor to the motor mount. These nuts are at the underside of the motor mount assembly.

4.Remove the lower half of the rear split back guard panel to either the top or the bottom basket (tumbler), depending on which basket (tumbler) is being serviced.

5.Remove the four (4) 7/16” OD nuts, which secure the impellor (fan/blower) housing cover to the blower housing.

6.Remove the two (2) 7/16” OD nuts and lock washers, which secure the impellor (fan/blower)/shaft bearing to the impellor (fan/blower) housing.

7.Loosen the two (2) setscrews on the impellor (fan/blower)/shaft bearing.

8.Remove the impellor (fan/blower)/shaft bearing from the shaft. To do so, wedge a slotted screwdriver blade between the bearing impellor (fan/blower) cover and walk bearing back off the shaft. The impellor (fan/blower) cover will also now separate from impellor (fan/blower) housing.

9.Remove impellor (fan/blower) lock nut (right hand) and lock washer securing the impellor (fan/blower) to the motor shaft. This can be done by turning the lock nut to the left with an adjustable wrench, or more advisable, with a 1-1/8”deep socket ratchet wrench in an effort to avoid damaging the lock nut.

10.Align impellor (fan/blower) to the center of the impellor (fan/blower) housing hole and remove impellor (fan /blower) by grasping fan with both hands and pulling outward. The key will also come off motor shaft in the procedure.

11.To install the impellor (fan/blower):

Insert key into motor shaft removed in Step #10. Line up keyway in impellor (fan/blower) with key in the shaft and slide impellor (fan/blower)ALL the way onto shaft.

12.Reinstall the lock washer and lock nut removed in Step #9 and tighten securely.

13.Reassemble the impellor (fan/blower)/shaft bearing to the impellor (fan/blower) cover and secure (hand tighten only) with the two (2) lock washers and nuts removed in Step #6. Install the housing cover and bearing assembly onto the shaft and housing. Secure with the four (4) nuts removed inStep #5. Secure the two (2) setscrews on the impellor (fan/blower)/shaft bearing. Be sure that these setscrews are securely in place.

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14.The impellor (fan/blower) must now be adjusted/centered in the blower housing. Align the center of the motor shaft (at impellor [fan/blower]/shaft bearing), so that the center of the motor shaft is exactly 8- inches (20.32 cm) from the left side panel.

a.Once the impellor (fan/blower) is properly centered, tighten the two (2) nuts of the impellor (fan/blower)/shaft bearing that were hand tightened in Step #13.

IMPORTANT: Failure to have the impellor (fan/blower) properly aligned can result in the impellor (fan/blower) being damaged.

15.Reinstall the lower half of the rear split back guard panel removed in Step #4.

16.The motor must now be realigned and secured in place. To do so, position the motor so that it is exactly8-inches(20.32 cm) from the center of the motor shaft to the right side panel. Tighten the four (4) nuts which secure motor to the motor mount loosened inStep #3.

17.Make the necessary belt/idler tension adjustment (follow Belt/Idler Tension Adjustment Procedure in

Section K).

18.Reverse Step #1 and Step #2.

K. BELT/IDLER TENSION ADJUSTMENT

1.Discontinue power to the dryer.

2.Remove the lint drawer, the control/lint door, and the control box assembly from the dryer (follow Control Box Removal Procedure inSection D).

NOTE: If lower basket (tumbler) is being serviced, the control boxdoes not have to be removed.

3.To adjust tension, while holding spade tension bolt in place (i.e., with channel lock pliers), loosen the 9/16” OD locking nut. To increase tension, tighten the inner 9/16” OD nut; to decrease tension, loosen the inner nut.

NOTE: Approximate proper belt tension - when there is a1-inch(2.54 cm) space between the idler adjustment bracket and the first thread on the right hand side of the spade tension bolt.

4.Once proper adjustment is achieved, secure the 9/16” locking nut.

5.Reverse Step #1 and Step #2.

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L. TO REMOVE DUAL MICROPROCESSOR CONTROLLER (DMC) COMPUTER PANEL ASSEMBLY

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.Remove screw in the lower right hand corner of the control panel, securing the panel to the control box.

4.Open the control panel and disconnect ALL the harnesses (the two [2]9-pinwire harness connectors and the4-pinconnector wiring harness) that are connected to the DMC computer.

5.To remove the control panel assembly from the control box, gently tap the bottom edge of the control panel while lifting panel upward off hinges.

6.Reverse procedure to reinstall the control panel assembly.

7.Reestablish power to the dryer.

M. TO REPLACE DMC COMPUTER

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.Remove screw in the lower right hand corner of the control panel, securing panel to control box.

4.Open control panel and disconnect ALL the harnesses (the two [2]9-pinwire harness connectors, the3-pinconnector wiring harness coming from coin acceptor optic switch[es], and the one [1]4-pinpower wire harness connector) that are connected to the DMC computer.

NOTE: These connectors can be removed from the DMC computer by squeezing the side tabs while pulling the connector outward.

5.Depending on the service function to be performed, the control panel assembly can be left on the control box or removed entirely from the dryer. To remove the control panel, follow Control Panel Removal Procedure inSection L, Step #5.

6.Disconnect the keyboard (touch pad) ribbon connector by holding onto the blue ribbon connector and pulling outward.

7.Remove the two (2) screws securing the DMC computer to the metal control panel and gently disassemble the DMC computer from the panel.

8.Install the new DMC computer by reversing the procedure in Step #7.

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IMPORTANT: When installing the new Dual Microprocessor Controller (DMC) computer, make sure that the transformer on the DMC computer is located at the bottom area of the control panel.

9. Reverse Step #1 through Step #6.

NOTE: When reconnecting the optic switch harness connector for single coin acceptor models, connect the harness to the lower of the two (2) connectors on the DMC computer.

NOTE: For models with the dual coin option, the lower denomination harness connector (red/green and orange wires) are connected to the lower connector on the DMC computer. The higher denomination harness (black/green/orange wires) are connected to the higher connector on DMC computer.

N. TO REPLACE KEYBOARD (TOUCH PAD)

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Drawer Removal Procedures inSection A andSection B).

3.Remove screw located in the bottom right hand corner of the control panel.

4.Open the control panel and disconnect keyboard (touch pad) ribbon connector from the DMC computer by holding onto the blue ribbon connector and pulling outward.

5.Remove the “U” shaped coin reject/return holder located on the bottom of the keyboard (touch pad) by removing the two (2) hex nuts (with a 1/4” nut driver) at the back side of the control panel securing the “U” coin reject/return holder to panel.

6.Peel the keyboard (touch pad) off the panel. The ribbon cable/connector will come out through the slot in the control panel.

7.To replace the keyboard (touch pad), peel the paper backing off the new keyboard (touch pad). Put the ribbon cable/connector through the slot in the control panel. Holding the new keyboard (touch pad) close to the panel, align it into position and gently press into place.

8.Replace the “U” shaped coin reject/return holder removed in Step #5.

9.Reverse Step #1 through Step #4.

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O. TO REPLACE COIN ACCEPTOR

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.Remove the screw located in the bottom right hand corner of the control panel.

4.Disconnect the optic switch connector(s) from the jumper connector(s). This is done by squeezing the optic switch connector tabs and pulling it apart.

5.Remove the two (2) nuts holding the “U” shaped coin reject/return holder by using a 1/4” nut driver.

6.Remove the two (2) nuts located at the top of the coin acceptor with the same 1/4” nut driver. The coin acceptor can now be removed.

7.Reverse procedure for installing the new coin acceptor.

8.Reestablish power to the dryer.

P. TO REPLACE EITHER MOTOR RELAY

1.Discontinue power to the dryer.

2.Remove the lint drawer and the control door from the dryer (follow Lint Drawer and Control/Lint Door Removal Procedures inSection A andSection B).

3.Remove screw located in the bottom right hand corner of the control panel and open control panel.

4.Either the relay can be removed with the control box in place on the dryer, or the control box can be removed from the dryer and placed on a flat surface. To remove the control box, follow Control Box Removal Procedure inSection D.

5.Disconnect the wires on the particular relay that needs to be replaced. (NOTE: the location of each wire on the relay.)

6.Remove the motor relay from the control box by removing the two (2) screws and nuts securing it to the control box.

7.Install new relay by reversing the steps above.

IMPORTANT: Be sure to note the location of wires on the relay before removal.

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Q. BASKET (TUMBLER) ALIGNMENT - VERTICAL (REFER TO PAGE 17)

1.Discontinue power to the dryer.

2.Remove the upper half of the rear split back guard panel to either the top or the bottom basket (tumbler), depending on which basket (tumbler) is being serviced.

3.Loosen the four (4) hex head bolts on the sides of the bearing box (two [2] on each side).

4.Back off jam nuts on the two (2) Allen head adjustment screws.

5.Turn the screws clockwise (CW) evenly to raise the basket (tumbler) or counterclockwise (CCW) evenly to lower the basket (tumbler).

6.Rotate the basket (tumbler) from the front and check alignment with the main door opening.

IMPORTANT: Leave a larger gap from the inside ring on the top of the front panel opening to the basket (tumbler), and a smaller gap on the bottom to compensate for the weight of the clothes being dried.

7.Tighten the four (4) hex head bolts on the sides of the bearing box and the two (2) jam (hex) nuts on the Allen head adjustment screws.

8.Check the belt tension and make the necessary adjustments (follow Belt/Idler Tension Adjustment Procedure inSection K).

9.Reinstall the upper half of the rear split back guard panel removed in Step #2.

10.Reestablish power to the dryer.

R. BASKET (TUMBLER) ALIGNMENT (LATERAL)

1.Discontinue power to the dryer.

2.Remove the upper half of the rear split back guard panel to either the top or the bottom basket (tumbler), depending on which basket (tumbler) is being serviced.

3.Loosen the two (2) hex head bolts (one [1] turn is enough) that hold the pillow block bearing to the bearing box.

4.Back off the two (2) jam (hex) nuts on the side adjustment bolts. Rotate the basket (tumbler) from the front of the dryer, checking the space between the basket (tumbler) and the front panel. Door opening should be equal on each side.

5.The lateral adjustment (Refer to illustration onnext page)

a.To increase gap R, loosen (turn counterclockwise [CCW]) adjustment bolt A and tighten (turn clockwise [CW]) adjustment bolt B.

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