Bunn G1 Manuales De Servicio
10
4. Disconnect the grinder from the power source.
If voltage is present as described, proceed to
#5.
If voltage is not present as described, refer to the
Wiring Diagrams and check the grinder wiring
harness.
5. Check for continuity across the terminals on the
bag sensor switch.
If continuity is present as described, reconnect the
wires, the switch is operating properly.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
1. Remove the wires from the switch.
2. Remove the two #8-32 keps nuts securing the
bag sensor assembly to the grinder housing.
3. Remove the two #2-56 screws, nuts and external
tooth lockwashers securing the switch to the bag
sensor assembly.
4. Mount the new switch to the bag sensor assembly
using two #2-56 screws, nuts and external tooth
lockwashers. Adjust the assembly by locating the
corner of the switch housing to the top edge of
the black metal mounting bracket.
5. Reattach the sensor assembly to the grinder
housing and secure with two #8-32 keps nuts.
6. Refer to Fig. 3 when reconnecting the wires.
SERVICE (cont)
BAG SENSOR SWITCH (cont.)
WHI/ORA to
Terminal “A”
on Relay
FIG. 3 BAG SENSOR SWITCH TERMINALS
AC MOTOR AND GRIND CHAMBER
FIG. 4 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.
WHI/VIO from
Off/On/Start
Switch
P1705
10191 011500