Bunn-o-matic corporation post office box 3227 springfield, illinois 62708-3227 phone: (217) 529-6601 fax: (217) 529-6644 www.Bunnomatic.Com operating & service manual of f/ st op st ar t 1. Pla ce filte r in to f un ne l a nd slid e fu nn el in to r ails . 2. Mo me nta rily pu sh th e s witc h to "s...
2 contents user notices ............................................................. 3 electrical requirements ............................................ 3 operating controls.................................................... 3 cleaning ..............................................................
3 #20545.0000 user notices carefully read and follow all notices on the grinder and in this manual. They were written for your protection. All notices on the grinder are to be kept in good condition. Replace any unreadable or damaged labels . #05876.0000 electrical requirements the grinder has an at...
4 cleaning exterior surfaces the use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on bunn-o-matic equipment. Care should be taken not to scratch the hopper or windows with any abrasive material. Regular cleaning will keep your grinder loo...
5 co ars e - fin e bunn 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 dispe...
6 problem grinder will not start. Remedy (a) plug-in the grinder. (b) check the voltage at the wall outlet with a voltmeter. It must be 120 volts ac for 120 volt models, 100 volts for 100 volt models, and 230 volts for 230 volt models. (a) momentarily press the off/on/ start switch to the “start”(lo...
7 troubleshooting (cont.) problem probable cause remedy each motor is equipped with a tem- perature and current overload protec- tion feature which will immediately shut off the motor when an overload has occurred. Check the grinder for obstructions. Refer to service - motor for testing procedures. ...
8 use only on a properly protected circuit capable of the rated load. Electrically ground the chassis. Follow national/local electrical codes. Do not use near combustibles. An extension cord, when used, must be shorter than 20 feet if 16-gage 3-conductor wire, or shorter than 10 feet if 18-gage 3-co...
9 service (cont.) capacitor (model lpg)(cont.) location: the capacitor is located inside the front panel of the hopper housing next to the off/on/start switch. Test procedure: 1. Disconnect grinder from the power source. 2. Visually inspect the capacitor for leakage. If leak- age is visible, replace...
10 p1038 hopper selector switch (model lpg-2e) p1029 location: the hopper selector switch is located in the lower left front of the hopper housing. Test procedure: 1. Disconnect grinder from the power supply. 2. Remove all wires from the switch terminals. 3. Check that the switch is installed proper...
11 p1022 location: the motor is located inside the hopper assembly. Test procedures: 1. Disconnect grinder from the power supply. 2. On model lpg-2e, disconnect the black wire and the white wire to the motor from the main wiring harness, the red wire to the circuit breaker and the red wire to the of...
12 1. Retaining ring w/hopper gasket 2. Filler plate 3. Slide plate, solenoid plunger and spring 4. Spacer plate 5. Setscrew, #10 -32 6 mounting ring, solenoid and solenoid mounting plate 7. Setscrew, #8-32 8. Burr housing divider 9. Motor and burr housing p1050 1 3 4 6 5 7 8 2 3 9 fig. 13 solenoid ...
13 22. Remove the two #8-32 flat head screws securing the motor cover (18) to the motor and housing assembly (17) and remove the cover. Set aside for reassembly. 23. Discard old motor and housing assembly. 24. Place new motor on it’s side and install motor cover (18) using two #8-32 flat head screws...
14 service (cont.) off/on/start switch location: the off/on/start switch is located on the right front side of the hopper housing. Test procedure: 1. Disconnect grinder from the power source. 2. Remove all wires from the switch terminals. 3. Check for continuity across the .187" terminals of the swi...
15 solenoid with a voltmeter. Connect the grinder to the power source and place the off/on/start switch in the “on” center position. The indication must be 120 volts ac. 4. Disconnect the grinder from the power source. If voltage is present as described, proceed to #5. If voltage is not present as d...
16 service (cont.) timer (model lpg-2e) p1061 location: the timer is located inside the hopper housing just behind the left solenoid. Test procedure: 1. Disconnect grinder from the power source. 2. Insert the leads of a voltmeter set to read at least 120 volts ac, along side the red wire (terminal 8...
17 8. Slip timer and timer mounting bracket under the two screws on the motor support plate and tighten screws. 9. Locate the left and right timer dials in their proper place on the rear panel and secure with nuts and internal tooth lockwashers. 10. Place timer knobs on timers. 11. Reconnect harness...
18 wiring schematics 27103.0000c 11/98 © 1996 bunn-o-matic corporation schematic wiring diagram lpg2e n l1 blk red whi 120 volts ac 2 wire single phase 60 hz grn 3 amp 2 3 4 5 6 1 7 8 9 10 timer assy. (hopper slide gate timer dial wiring) right - brown left - orange yel whi blu yel whi/blk blk red v...
19 blk whi red red 10529.0000c 3/92 © 1990 bunn-o-matic corporation schematic wiring diagram lpg & lpg2 n l1 b l k p1 2 3 4 5 6 1 red whi/blk blk whi/blu whi/brn whi grn red whi/blk blk whi/blu whi/brn whi blk red whi/brn whi/blu 1 2 3 4 5 p2 blk red whi/brn whi/blu dc motor blk whi red red 4 1 2 3 ...
20 blk whi red red 10529.0002e 8/01 © 1990 bunn-o-matic corporation schematic wiring diagram lpg-a l2 l1 b l k p1 2 3 4 5 6 1 red whi/blk blk whi/blu whi/brn whi grn red whi/blk blk whi/blu whi/brn whi blk red whi/brn whi/blu 1 2 3 4 5 p2 blk red whi/brn whi/blu dc motor blk whi red red 4 1 2 3 p3 g...
21 blk whi red red 10529.0003e 10/98 © 1998 bunn-o-matic corporation schematic wiring diagram lpg w/capacitor l1 p1 2 3 4 5 6 1 1 2 red whi/blk blk whi/blu whi/brn whi grn red whi/blk blk blk whi/blu whi/brn whi blk blk blk red whi/brn whi/brn whi/brn whi/blu 1 2 3 4 5 p2 blk red whi/brn whi/blu dc ...
22 wiring schematics blk whi red red 10529.0001d 10/98 © 1990 bunn-o-matic corporation schematic wiring diagram lpg-b n l1 b l k p1 2 3 4 5 6 1 red whi/blk blk whi/blu whi/brn whi grn red whi/blk blk whi/blu whi/brn whi blk red whi/brn whi/blu 1 2 3 4 5 p2 blk red whi/brn whi/blu dc motor blk whi re...
