7
ADJUSTMENTS
The grind can be set from very fine to very coarse. The amount may be adjusted for use in most commercial
coffee brewers. The following procedures should be used to make adjustments. A change in the burr adjustment
will also change the amount dispensed. Any adjustment of the burrs should be followed by an adjustment of the
timer.
Burr Adjustment
1. Unplug the grinder and empty all beans from the hoppers.
2. Plug in the grinder, press and release the GRIND button (with either hopper selected). Run a few grind cycles
until all of the coffee in the grind chamber is used.
3. Remove the upper front inspection panel.
4. Loosen the locknut by one turn.
5. Press the GRIND button and slowly turn the adjusting screw in a clockwise di-
rection until a metallic whine is heard due to the rubbing of the grinding burrs.
(It may be necessary to start more than one grind cycle to obtain this sound.)
6.
Turn plastic grind indicator until screw slot lines up with “O” on the indicator.
7. The following settings approximately correspond to the CBC recognized grinds.
All are referenced from the arrow position noted in #6.
FINE GRIND: Rotate the adjusting screw 7 hash marks in a counterclockwise direction.
DRIP GRIND: Rotate the adjusting screw 8 hash marks in a counterclockwise direction.
REGULAR (COARSE) GRIND: Rotate the adjusting screw 12 hash marks in a counterclockwise direction.
33736 072310
COMMUNICATING WITH COFFEE BREWER
When the grinder is used with its companion brewer, the name of the coffee and the size of the batch ground
is communicated to the brewer through the chip in the funnel handle as it is placed into the brewer. Therefore,
it is necessary to “tell” the grinder the names of the coffees that have been loaded into the hoppers. The names
are chosen from the Coffee Chart shown below. Contact the factory if custom names that are not on the chart
are required.
SELECTING COFFEE NAMES
Entering a coffee name from the chart below:
1. Simultaneously press and hold the STOP button and any one of the three batch buttons on the side to be
programmed. After 3 seconds all three indicators on the side selected will begin flashing. The display will
show a number from the coffee chart below. This number represents the name of the coffee that is to be
loaded into the hopper.
2. Press and release the GRIND button to increase the number or press and release the STOP button to decrease
it.
3. When the correct number for the coffee being used is displayed, press any of the batch buttons on the other
side. All three indicators on that side will begin flashing.
4. Repeat step 2 to enter the name for the coffee being used on this side.
5. To exit the setup mode, press and release the ® button anytime during this procedure. The ® button is a
hidden programming pad located at the upper right corner of the BUNN
®
logo.
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Adjusting
screw
Hash
Marks
P2820
