Main Power Switch - Bunn TITAN DUAL Service & Repair Manual

COMPONENT ACCESS (cont)
CONTACTOR (cont)
ing Diagrams and check the brewer wiring harness.
5. Locate the black, red and blue wires on the L1, L2
and L3 terminals on the contactor.
6. With a voltmeter, carefully check the voltage across
L1-L2, L1-L3 and L2-L3. The indication must be,
208 volts ac for 120/208 volt models, 240 volts
ac for 120/240 volt models or 230 volts ac for
230/400 volt models.
7. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #8.
If voltage is not present as described, refer to the
Wiring Diagrams and check brewer wiring harness.
8. Check for continuity across the terminals on the
left side of the contactor by manually closing the
contacts. Continuity must not be present when the
contact is released.
9. Check for continuity across the terminals in the
center of the contactor by manually closing the
contacts. Continuity must not be present when
the contact is released.
10. Check for continuity across the terminals on the
right side of the contactor by manually closing the
contacts. Continuity must not be present when the
contact is released.
If continuity is present as described, the contactor is
operating properly.
If continuity is not present as described, replace the
contactor.
Removal and Replacement:
1. Remove all wires from the contactor.
2. Remove the four #10-32 slotted head screws secur-
ing contactor to the inside of the hood.
3. Securely install the new contactor inside the hood.
4. Connect wires to the contactor terminals.
RELEASED FOR PRODUCTION
DIR Num: 41747.0000
POWER SWITCH
FIG 7 MAIN POWER SWITCH
Location:
The main power switch is located under the
brewer in front of the right rear leg.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Disconnect the wires from the power switch. With
the switch in the ON position, check for continuity
between terminals opposite each other.
There should be continuity between terminals opposite
each other when the switch is in the ON position, no
continuity when in the OFF position.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
1. Disconnect the brewer from the power source.
2. Disconnect the wires from the power switch.
3. Remove the switch mounting screws from the
under the base.
4. Install new switch in trunk with the two 6-32 x ¼˝
mounting screws.
5. Connect wires to the switch terminals.
Page 24
12, December 2018

Main Power Switch

41747 112608