Bunn LPG Service Manual

14
SERVICE (cont.)
OFF/ON/START Switch
Location:
The Off/On/Start switch is located on the right
front side of the hopper housing.
Test Procedure:
1. Disconnect grinder from the power source.
2. Remove all wires from the switch terminals.
3. Check for continuity across the .187" terminals of
the switch when it is held in the lower “START”
position. Continuity must not be present across
these terminals in the center or upper position.
If continuity is present as described, proceed to #4.
If continuity is not present as described, replace the
switch.
4. Check for continuity across the .25" terminals of
the switch when it is in the “ON” position. Continu-
ity must not be present in the upper “OFF” posi-
tion.
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 all wires from the switch terminals.
2. Compress the clips inside the front of the hopper
housing and gently push the switch through the
opening.
3. Push the new switch into the opening and spread
the clips to retain the switch in the hopper housing.
4. Reconnect all the wires to the switch terminals.
5. Refer to Fig. 16 when reconnecting the wires.
P1057
P1028
Solenoid (Model LPG-2E)
P1058
Location:
The solenoids are located inside the hopper hous-
ing behind the left and right side of the motor.
Test Procedure:
1. Disconnect grinder from the power source.
2. Remove both wires from the solenoid coil termi-
nals.
3. Check the voltage across the red wire and the violet
wire removed from the right solenoid or the red
wire and the orange wire removed from the left
FIG. 15 OFF/ON/START SWITCH
FIG. 16 OFF/ON/START SWITCH TERMINALS
(Viewed from rear)
FIG. 17 SOLENOIDS
RED from Motor
RED to Left and Right
Solenoid - LPG-2E
BLK to Power
Cord - LPG
YEL to Timer P1-5 - LPG-2E
WHI/BRN to Timer P1-5 - LPG
WHI from Power Cord to Hopper
Selector Switch - LPG-2E
WHI/BLU to Timer P1-4 - LPG
27091 111598

Bunn LPG Specifications

General

Brand	Bunn
Model	LPG
Category	Coffee Grinder
Language	English