Bunn G9-2T DBC - Manual (Page 34)

34
SERVICE (Cont.)
Location:
The Off/On/Start switch is located to the left side on
the front of the housing above the upper front inspec-
tion panel.
Test Procedure:
1. Unplug the grinder.
2. Remove the black wire from the switch.
3. Check for continuity across the black wire from the
Off/On/Start switch and the left blade of the cordset
connector (see illustration below).
If continuity is present as described, proceed to #4.
If continuity is not present as described, refer to the
Wiring Diagrams and check the grinder wiring har-
ness.
4. Remove the remaining wires from the switch.
5. Check for continuity across the left terminals when
the switch is placed in both the “ON” (center) and
“START” (lower) positions. Continuity must not be
present in the “OFF” position.
If continuity is present as described, proceed to #6.
If continuity is not present as described, replace the
switch.
6. Check for continuity across the right terminals
when the switch is placed in the “START” (lower)
position only. Continuity must not be present in the
“OFF” position.
If continuity is present as described, the Off/On/Start
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 wrapper 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 hood.
4. Refer to the following illustration when reconnect-
ing the wires.
P594
CORDSET CONNECTOR
Looking Strait-on
Black
Ground
White
WHI/RED timer to P4-6
BLK to Cordset
BLK to timer P4-1
VIO to timer P1-2
BLU to SW2
PNK to Intf conn. 2
BLK to Cordset
WHI/RED timer to P4-6
BLK to timer P4-1
VIO to timer P1-2
BLU to SW2
PNK to Intf conn. 2
P606
FIG 29 OFF/ON/START SWITCH TERMINALS
Grinders with Digital Timer
Grinders with Analog Timer
Off/On/Start Switch (Models LPG, LPG-2E, FPG, G-1,G-2,G-3, G9, G9-2, G2 trifecta)
FIG 28 OFF/ON/START SWITCH
41545 072710