Bunn Coffeemaker CDBC User Manual

Page 9

1. Make sure the tank is full of water to be used for calibration. The water must be in contact with the refill probe.
2. Unplug the brewer from the power source, then press and hold the BREW button while power is reapplied.
3. Continue pressing the BREW button until the READY indicator begins to flash. Release the BREW button and

then press it again momentarily.

4. The new calibration is automatically completed within a few seconds. If the water is too pure for use with the

brewer, the READY indicator will flash very rapidly and the old calibration will be retained.

The pulse brew parameters (initial fill time, off times, and remaining on times) are entered using the following

set-by-example process.
1. First set the brew volume using the standard procedure in 

Brew Volume Setup.

2. Position an empty container under the sprayhead. Allow the tank to finish refilling. Make sure that the READY

lamp is on, or that the BREW LOCKOUT function is turned off.

3. Press and hold the OFF/ON button. The brew valve will turn on after 10 seconds. Release the button. This begins

the initial on-time setting. When the spray has continued for the desired time, momentarily press the OFF/ON
button.

4. The spray is now stopped and the off time setting has begun. Press the OFF/ON button momentarily to end

the off time.

5. The spray is now on again and the remaining on time setting has begun. Press the OFF/ON button momentarily

at the end of the desired remaining on time.

6. The setup is now complete and the parameters are stored in memory. The spray will continue the off and on

cycles until the brew volume of step 1 is complete. Pressing the OFF/ON button again will terminate the brewing
cycle, with the parameters stored in memory.

7. If only a preinfusion is desired, i.e. an initial on time followed by one off period, use the same procedure, but

stop after step 4 and allow the brew to finish the volume set in step 1. This will store the initial on time and off
time in memory.

Procedure for Disabling Pulse Brew or Preinfusion:
1. Position an empty container under the sprayhead. Allow the tank to finish refilling. Make sure that the READY

lamp is on, or that the BREW LOCKOUT function is turned off.

2. Press and hold the OFF/ON button. The brew valve will turn on after 10 seconds. Release the button.
3. Allow the spray to continue and press no buttons until spray stops. The pulse and preinfusion functions are

now disabled.

NOTE: When the brewer has been set up for pulse or preinfusion, the adjustment of brew volume is done the same
as always and has no effect on the pulse brew parameters. The pulsing is temporarily disabled while adjusting the
brew volume and automatically returns during normal brewing.

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