Bunn S, Operating & Service Manual

Page: 19 / 44

Page 19
SERVICE (cont.)
29251 052500
START SWITCH (Models ST, STA, STF & STFA)
Location:
The START switch is located far right on the switch
panel.
Test Procedures:
1.
Disconnect the brewer from the power supply.
2. Disconnect the WHI/YEL wire from the top switch
terminal and the WHI/ORA wire from the bottom
switch terminal.
3. Check for continuity across the two terminals on
the switch when it is held in the lower position.
Continuity must not be present across these
terminals in the upper position.
If continuity is present as described, reconnect the
WHI/YEL wire to the top terminal and the WHI/ORA
wire to the bottom terminal.
If continuity is not present as described, replace the
switch.
P1591
P1589
FIG. 10 START SWITCH
WHI/YEL to Brew Timer TL3
WHI/ORAto Brew Timer TL5
Removal and Replacement:
1.
Remove the WHI/YEL and WHI/ORA wires from
the start switch.
2. Compress the clips inside the hood and gently
push the switch through the opening.
3. Push new switch into the opening and spread the
clips to hold the start switch in the hood.
4. Refer to FIG. 11 when reconnecting the wires.
FIG. 11 START SWITCH TERMINALS