Инструкции По Обслуживанию для Bunn G9 HD

Page 9

Motor

of the grinder housing through the hole in the motor

mounting plate.

3. Remove both 6-32 screws beneath the upper front

inspection panel.

4. Remove the six 10-32, hex head screws on top of the

motor mounting plate.

5. Slowly slide the assembly out the rear of the grinder

housing. The mounting plate will have to be raised

to gain clearance for the motor hardware and wiring

harness bushing.

6. Remove the four 5/16”-18 bolts and nuts to separate

the motor from the mounting plate.

7. Mount the new motor and tighten the four bolts and

nuts. They should be tightened approximately one

full turn past snug.

8. Slide the motor mounting plate into the rear of the

grinder housing.

9. Feed the wiring harness into the top of the housing

through the hole in the motor plate.

10. Reinstall the six 10-32 hex head screws through the

motor plate and the two 6-32 screws through the

housing.

11. Reattach the green wire to the 10-32 stud on the

motor mounting plate.

12. Refer to the Off/On/Start switch section when recon-

necting the switch wires.

13. Refer to the illustration below when reconnecting the

motor wires.

SERVICE (cont.)

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P1309

10171 042707

Location:

The motor is located in the upper wrapper under the

hopper.

Test Procedure:

1. Remove the hole plug located on the right side of the

housing. Press the red “Reset” button visible through

the opening. Listen carefully for a “click”. This resets

the motor protection circuit and may indicate that

something other than coffee was inserted into the

hopper for grinding.

If the grinder remains unable to start, proceed to step

If the grinder stops operating shortly after starting,

refer to the removal and replacement steps to gain ac-

cess-to the grind chamber. Remove any foreign materials

that may be found.

2. Disconnect the grinder from the power supply.

3. Remove the electrical access panel at the rear of the

motor.

4. Check the voltage across terminals L1 & L2 of the

motor with a voltmeter when the Off/On/Start switch

is placed in the “START” (right) position and released.

Connect the grinder to the power supply. The indica-

tion must be:

(a) 120 volts ac for two wire 120 volt models.

(b) 240 volts ac for two wire 240 volt models.

5. Disconnect the grinder from the power supply.

If voltage is present as described and the grinder

remains unable to start, replace the motor.

If voltage is not present as described, refer to the Wir-

ing Diagrams, and check the grinder wiring harness.

Removal and Replacement - MOTOR

1. Remove all wires from the Off/On/Start switch, motor,

and motor mounting plate.

2. The entire wiring harness must be fed into the bottom

GRN to Chasis Ground

YEL to Snubber

P621

WHI/ BLU to Snubber

WHI/BLU to Relay

WHI/BLK to Snubber

WHI/BLK to Cordset

(120V models)

RED/BLK to Cordset

(230V models)

FRANKLIN MOTOR

MARATHON MOTOR