Bunn Fast Cup Series Service & Repair Manual page 79

RIGHT PANEL
Upper and Lower Door Interrupt Switch
Purpose: The upper and lower door interrupt switch
disables the operation of the coffee machine. With a
door open, the switch requires a service key to actu-
ate the switch to On position for a technician to per-
form testing purposes with an operational machine.
TEST INSTRUCTION
Enter Service Technician Mode and Select
Service icon
Step 1: Select and enter the Sensors tab.
Step 2: Located left side, Upper or Lower Door
Switch.
Door closed: reads: CLOSED.
Door open reads: OPEN
Step 3: Open and close door while monitoring the
service screen. If machine does not see
the door switch as being closed when the
door is closed, visually inspect that the
door rear panel has a stud that will align
with the switch hole on the trunk frame
before moving onto testing the switch for
continuity.
When the door is closed, the stud pushes
on the spring loaded door switch to unlock
the User Panel/Touchscreen.
Volt/Ohm Meter - Continuity Check
Step 4: Disconnect or unplug machine from power.
Step 5: Remove right panel to access door inter-
rupt switches.
Step 6: Isolate the door switch being tested in
preparation of checking the switch for con-
tinuity by disconnecting the wires from the
switch terminals labeled "Normally Open".
Step 7: Select the lowest resistance (OHMS) range
on the voltmeter. Install black meter lead in
the meter COM terminal and red meter
lead in the terminal labeled with the OHM
symbol.
Note: Various voltmeters may have a sym-
bol to indicate audible tone or sound. The
meter will alert with a loud tone or sound to
indicate continuity.
SERVICE
1
79
N/C
N/O
N/O
N/C
2
3
OPEN
Continued >
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