Initial Set-Up; Adjustments - Bunn LPG Operating & Service Manual

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
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 LPG-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)
1-1/2
2-1/4
3
6. Repeat steps 2 - 4 for remaining hopper.
Timer Adjustment (Model LPG)
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.
Timer Settings (in Seconds)
2
3
4
5
P1073
SCHEMATIC WIRING DIAGRAM
LPG2E
L1 N
GRN
BLK SELECTOR
3 SWITCH
WHI
AMP
GRN
GRN
1
WHI WHI
2
TIMER ASSY. 3
BLU BLU BLK
4 GRINDER
(Hopper Slide YEL YEL WHI
Gate Timer 5
M
Dial Wiring) WHI/BLK 6 WHI/BLK RED
Right - Brown
Left - Orange BLK BLK RED
7
RED RED RED
8
VIO VIO
9 RED
ORA ORA RT
10 SOL
OFF/ON/START SLIDE GATES
SWITCH RED
LT RED
RED RED SOL
WHI
120 VOLTS AC
2 WIRE 27103.0000B 3/97 © 1996 BUNN-O-MATIC CORPORATION
SINGLE PHASE
60 HZ
P1035
P1744
27091 111598