Bunn FPG-2 Manual De Usuario

15

FIG. 1 BAG SENSOR SWITCH

P1704

Location:

The bag sensor switch is located inside the lower 

front of the grinder housing behind the coffee dispens-

ing chute.

Test Procedure:

1.  Disconnect the grinder and place a coffee bag 

behind the dispense chute.

2.  Remove the white/violet wire from the bag sensor 

switch.

3.  Check the voltage across the white/violet wire 

from the bag sensor switch and the white wire, 

red/black wire or red wire on the relay coil with 

a voltmeter.  Hold the Off/On/Start switch in the 

“START” (lower) position and connect the grinder 

to the power source. 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. 

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 hous-

ing and secure with two #8-32 keps nuts.

6.  Refer to Fig. 2 when reconnecting the wires.

WHI/ORA to

Terminal “A”

on Relay

FIG. 2 BAG SENSOR SWITCH TERMINALS

WHI/VIO from

Off/On/Start

Switch

P1705

41545 072710