Index Motor - Bunn My Cafe AP Technical Training Manual

Sensors
Sensor signals from the Index Sensor and Flow Meter can be tested and viewed from the following load components
testing menus under "Test Outputs".
Index Sensor
You can use the "Test Index Motor" menu to view the signal operation of the index sensor. The filled in black square
means the position disc is interrupting the index sensor (blocked). The unfilled square means the position disc is not
interrupting the index sensor or the position disc slot is lined up with the index sensor (unblocked). The "Dump" and
"Load" switches are used as a momentary button to check the positioning of the pod holder. You will need to press
and hold the switch to rotate the index motor, which will automatically stop at the corresponding dump, load and brew
INDEX
position.
DUMP NEXT
Index D Black Square Motor - Dump position, sensor signal blocked.
INDEX D
DUMP NEXT
MOTOR INDEX
T LOAD DUMP NEXT
Index L Hollow Square Motor - Load position, sensor signal unblocked.
MOTOR INDEX L
T LOAD DUMP NEXT
Index B Hollow Square Motor - Brew position, sensor signal unblocked.
MOTOR INDEX B
T LOAD DUMP NEXT
MOTOR
T LOAD
Flow Meter
You can use the "Water Inlet xxx" menu to view the signal operation of the flow meter. Drain the tank partially be-
fore testing of the water inlet by turning off the water supply and activating the hot water dispense. Once the partial
draining of the tank is complete, turn the water supply back on before continuing with the flow meter test. Access the
"Water Inlet xxx" test screen. Activate the water inlet and watch the flow count number to increase at a rapid pace.
Water will flow through the flow meter and into the brew tank. The volumetric meter uses a paddle wheel with mag-
nets. The wheel rotates when water flows through the meter generating a pulse signal for every amount of milliliters
passing through. The flow meter is the primary component for determining the amount of brew water also know as
the flow count number.
MOTOR INDEX
LOAD DUMP NEXT
MOTOR INDEX L
LOAD DUMP NEXT
MOTOR INDEX B
LOAD DUMP NEXT
MOTOR
LOAD
MOTOR
LOAD
Brew/Home Position - Sensor Unblocked
WATER INLET 0
ON NEXT
MOTOR INDEX B
LOAD DUMP NEXT
MOTOR
LOAD
MOTOR
Dump Position - Sensor Blocked
LOAD
Load Position - Sensor Unblocked
WATER INLET 657
OFF ON
MOTOR
LOAD
NEXT OFF
Bunn-O-Matic Corporation
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