Bunn service manual Initial SET-UP/ADJUSTMENTS, Burr Adjustment, Timer Adjustment Model LPGA-2E

INITIAL SET-UP/ADJUSTMENTS

The grind can be set from fine to very coarse. The grind may be adjusted for use in most commercial coffee brewers. The following procedures should be used to make adjustments.

NOTE - A change in the burr adjustment will also change the amount dispensed. Any adjustment to the burrs should be followed by an adjustment of the timer dials.

Burr Adjustment

1.Unplug the grinder and empty all beans from the hopper(s).

2.Plug-in the grinder, place funnel with filter into the funnel rails. Momentarily press the Off/On/Start switch to the “START” (lower) position (with desired hopper selected) and release, run a few grind cycles until all of the coffee in the grind chamber is dispensed.

3.Remove the funnel with filter and carefully tip the grinder over on it’s back.

4.Place the Off/On/Start switch in the “START” (lower) position and, using the grind adjustment key provided, slowly turn the adjusting screw in a clockwise

		SE -
	R		FI
			N
A
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direction 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 the sound).

5.Make a mark with a pen on the decal to note the position of the arrow on the grind adjustment screw.

6.The following settings approximately correspond to the CBC recognized grinds. All are referenced from the arrow position marked in step #5.

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 10 hash marks in a counterclockwise direction.

NOTE: Exact adjustment will vary according to bean roast or added flavoring.

Timer Adjustment (Model LPGA-2E)

1. Fill hoppers with whole bean coffee and select hopper to be adjusted.

2.Remove the cover frpm the timer dials.

3.Set the timer dial to 2 seconds for each 1-1/2 ounces of ground coffee

desired.

4. Grind a few cycles to verify the setting by weighing samples.

5. Adjust the timer to correspond with the chart below.

Approximate Amount (in Ounces)	Timer Settings (in Seconds)
1-1/2	2
2-1/4	3
3	4

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6. Repeat steps 2 - 4 for remaining hopper.

Timer Adjustment (Model LPGA)

1. Unplug the grinder and remove the 2” hole plug in the rear cover.

2. Set the timer dial to 5 seconds for each ounce of ground coffee desired.

3. Verify the setting by weighing a few samples.

Use this 5 second per ounce figure as an APPROXIMATE guide only.

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