Bunn U3A - Manual (Page 24)

Page 24
SERVICE (cont.)
SWING ARM SWITCH
FIG. 22 SWING ARM SWITCH
Location:
The swing arm switch is attached to the cupola
cover.
Test Procedures:
1. Disconnect the brewer from the power source.
2. Remove the cupola cover end caps, swing spout
and cupola cover.
3. Disconnect the two black wires connected to the
switch.
4. Check for continuity across the terminals on the
switch.
5. Continuity should be present when switch plunger
is depressed.
If continuity is present as described, the switch is
operating properly.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
NOTE: Measure the distance from the top of the switch
plunger to the hood cover. The same distance is
needed when the new switch is installed.
1. Remove nut securing switch to hood cover and
remove switch.
2. Install new switch and reconnect the wires to the
switch. See Fig. 23 for reconnecting the wires.
3. Install all panels.
4. Test action of swing arm and switch for activation.
5. Adjust switch assembly up or down as needed for
proper operation.
NOTE: Do not remove cam assembly from swing
spout.
FIG. 23 SWING ARM SWITCH TERMINALS
BLK from Pump
BLK from Timer
P2140.70
P2168.50
10060.3 070102