Assessments - 3, GPA: 3.3 ( )

Fabricante : Bunn Arquivo Tamanho: 5.55 mb Arquivo Nome : Língua de Ensino:

10. Install shaft extension (11) and bushing (10) onto the grinder motor shaft. 11. Install stationary burr (9) inside the grind chamber and secure with two .250” -20 screws (8). 12. Install burr (7) on burr auger rotor/spring assembly (6) securing with two .250”-20 screws (20). 13. Slide burr auger rotor/spring assembly and burr (3) onto the motor shaft. 14. Align the slot in the shaft extension and the slot in the burr auger rotor/spring assembly and install shear plate (4). 15. Install burr rotor cup (5) onto the burr auger rotor/spring assembly (6). 16. Install the adjusting screw w/bearing (19) into the grind selector dial plate (18). 17. Install grind selector dial plate (18) with adjusting screw w/bearing (19) onto the grind chamber and secure with two .250”-20 screws (1). 18. Install grind selector knob (17) onto the grind selector dial plate (18). NOTE: Refer to ADJUSTMENTS in the Installation and Operating Manual, and reset the burrs. 41545 122209 SERVICE (Cont.) DC MOTOR AND GRIND CHAMBER - G1MD ONLY P1706 FIG. 6 DC MOTOR AND GRIND CHAMBER Location: The motor is located inside the upper part of the grinder housing. Test Procedures: 1. Remove the rear panel. Press the red “Reset” button visible on the rear of the motor. 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 #2. If the grinder stops operating shortly after starting, refer to removal and replacement instructions and inspect for foreign materials. 2. Disconnect the grinder from the power source and place a coffee bag behind the dispense chute. 3. Remove the black wire from the rectifier (+) terminal and the red wire from the (-) terminal. 4. Check the voltage across the (+) and (-) terminals with a voltmeter. Connect the grinder to the power source. When the Off/On/Start switch is momentarily placed in the “START” (lower) position and then left in the “ON” (center) position and a bag is in place behind the coffee dispense chute. The indication must be approximately 108 volts dc. 5. Disconnect the grinder from the power source. If voltage is present as described replace the motor. If voltage is not present as described, reconnect the white or red and white/blue wires to the motor, refer to the Wiring Diagrams and check the grinder wiring harness. Removal and Replacement - Motor (Refer to Fig. 8) 1. Disconnect all wires from the motor. 2. Remove the two .250”-20 screws (1) securing grind selector dial plate and grind selector knob (2) to the grind chamber. Remove dial plate and selector knob as an assembly. 3. Slide burr (7), auger rotor/spring assembly (3) and burr rotor disc (4) off the grinder motor shaft as an assembly. 4. Remove the two .250”-20 screws (8) securing the stationary burr (9) to the grind chamber. 5. Remove bushing (10) and washer (11) from the grinder motor shaft. 6. Remove the two #8 thread forming screws (12) securing the fill plate (13) to grinder housing and remove plate (13). 7. Remove the four #10-24 screws (14) securing the chute assembly (15) to the grind chamber and remove chute assembly (15). 8. Disconnect all the wires from the rectifier (23). 9. Remove the four .312”-18 screws (20), rubber washers (22) and flat washers (21) securing the motor and bracket to the grinder housing bracket. 41545 122209 SERVICE (Cont.) DC MOTOR AND GRIND CHAMBER - G1MD ONLY (cont.) BLU to BLU from Rectifier BLU to WHI/BLU from Relay (3) 10. Remove motor and bracket out the rear of the grinder housing. 11. Remove the two .250”-20 screws securing the motor to the front of the mounting bracket. 12. Remove the two #10-32 screws securing the motor to rear of the mounting bracket. 13 Remove motor from bracket. 14. Clean all grinding burrs and mounting surfaces before reassembly. 15 Place the new motor with hopper collar into position on the motor mounting bracket. 16. Using two .250”-20 screws secure the motor to the front of the mounting bracket. 17. Using two #10-32 screws secure the motor to the rear of the mounting bracket 18. Install motor and bracket through the rear of the grinder, position on the grinder housing bracket and secure with four .312”-18 screws (20), rubber washers (22) and flat washers (21). 19. Install stationary burr (9) to the grind chamber housing using two .250”-20 screws (8). 20. Install burr (7), burr auger rotor/spring assembly (3) and burr rotor disc (4) on to motor shaft. 21. Install grind selector dial plate and grind selector knob assembly (2) on the grind chamber housing and secure with two .250”-20 screws. 22. Refer to Fig. 7 and reconnect the wires to the motor and Fig. 37 and reconnect the wires to the rectifier. 23. Refer to ADJUSTMENTS section and reset the burrs. Removal and Replacement - Grind Chamber - Refer to Fig. 8: 1. Loosen the two set screws (16) securing the grind selector knob to the grind selector dial plate (18) and remove...

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