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Field Calibration of the Concentrate Pumps, Dispenser Flow Rates,
and Hopper Powder Throw
The factory set default values for the Pump & Dispenser Flow Rates are very accurate and typically do not need
to be field calibrated. However, if the mix ratio accuracy is ever in question, this procedure can be used to reca-
librate the unit in the field. Equipment Required:
50 or 100 ml graduated cylinder, with 1 ml graduations.
1000 ml graduated container.
NOTE: You can calibrate either the Concentrate Pump, Dispenser Flow Rate and set the Hopper Throw Rate in-
dependently. Simply scroll through the menu screen to the desired section and perform only those steps. (Refer
to Calibrating the Dispenser)
Calibrating the Concentrate Pumps.
Decaf Coffee - Concentrate Pump Calibration
1. Open the door of the dispenser and select PROGRAM on the Mode Selector Switch.
2. Depress and Hold the MENU switch for approximately 10 sec. The unit will display “C1 run” when it has
entered the Calibration Mode.
3. Select PRIME on the Function Selector Switch.
4. Remove the elbow from the Left (Decaf) Coffee Mixing Chamber and place a container under the mixing
chamber outlet. Press the SMALL cup button. The dispenser will display a 100 count down and then shut
the pump OFF automatically. Release the dispense switch.
5. Stop priming and allow the tip to stop dripping. Discard the concentrate collected.
6. Place a 50 ml graduated cylinder under the Left (Decaf) Coffee Mixing Chamber outlet.
7. Press the SMALL cup button. The dispenser will display a 100 count down and then shut the pump OFF
automatically. Release the dispense switch.
8. Keep the graduated cylinder under dispense tip until all the concentrate has dripped out.
9. Measure the volume of concentrate collected in the graduated cylinder.
The acceptable range for the volume of concentrate collected is 40 - 48 ml
10. If the amount collected is not within the acceptable range, empty the graduated cylinder and repeat STEPS
6 – 9.
11. If the amount collected is still not within range, replace the pump tubing with a new Tube Kit, (refer to the
Tube Replacement Instructions).
12. When satisfied with the volume of concentrate collected, press the MENU switch. The current Calibration
volume “C1 XX” will be displayed.
13. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 9.
Regular Coffee - Concentrate Pump Calibration
Depress the MENU button to display the Regular Concentrate Pump calibration menu “C2 run”. Repeat STEPS
3 – 13 above for the right side “Regular” pump, using the LARGE cup button.
(Continued)
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