Bunn FPG-2 Manual De Usuario

16

FIG. 3 AC MOTOR AND GRIND CHAMBER

P1704

Location:

 

The motor is located inside the upper part of the 

grinder housing.

Test Procedure:

1.  Remove the 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 #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 electrical access panel at the rear of 

the motor.

4.  Check the voltage across the white, red or red/

black and white/blue wires on terminals L1 & L2 

with a voltmeter.  Connect the grinder to the power 

source. When the Off/On/Start switch is momen-

tarily 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:

 

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

 

b.  230 volts ac for two wire 230 volt models

 

c.  240 volts ac for two wire 240 volt models. 

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, red or red/black and white/blue wires to the mo-

tor, refer to the Wiring Diagrams and check the grinder 

wiring harness.

Removal and Replacement - Motor (Refer to FIG.6):

1.  Remove the plate on the rear of the motor and 

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), 

shear plate (4) and burr rotor cup (5) 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 shaft extension (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.  Remove the four .250”-20 screws, flat washer and 

rubber washers securing the motor to the mount-

ing bracket.

9.  Remove motor out the rear of the grinder hous-

ing.

10.  Remove the four .250”-20 cage nuts from the 

motor mount.

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