Bunn G9-2T DBC Manuel d'utilisateur

GRINDERSIncludes: MHG, FPG,FPG-2, LPG-2, G1, G2, G3,G2 trifecta™, G9, G9WD,G9-2 & G9-2T DBCSERVICE & REPAIR MANUALBUNN-O-MATIC CORPORATIONPOST

10TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the proble

11TROUBLESHOOTING (cont.)ProblemProbable CauseRemedyEach motor is equipped with a temperature and current overload protection feature which will im-me

12Begin each grind cycle by visually inspecting the hopper(s) for ample supplies of whole bean coffee.Foreign materials must not block the openings at

13PROBLEMPROBABLE CAUSEREMEDYTROUBLESHOOTING (cont.)Incorrect coffee grind dispensed.Excessive chaffGrinder only dispenses from one hopperTimer will n

14SERVICE This section provides procedures for testing and replacing various major components used in this grinder should service become necessary.

15SERVICE (Cont.)FIG. 1 BAG SENSOR SWITCHP1704Location:The bag sensor switch is located inside the lower front of the grinder housing behind the coffe

16SERVICE (Cont.)AC MOTOR AND GRIND CHAMBERFIG. 3 AC MOTOR AND GRIND CHAMBERP1704Location: The motor is located inside the upper part of the grinder

17SERVICE (Cont.)WHI/BLU toRelay N.O.(K4)WHI to Cordset (120V)RED/BLK to Cordset (230V)GRN to Ground (120V)GRN/YEL to Ground (230V)P1310FIG. 4 AC MOTO

18SERVICE (Cont.)FIG. 5 GRIND CHAMBER COMPONENTSP170820 7 6 4 51618 1 19 1711 10 9 8 3 2 1137121415AC MOTOR AND GR

19SERVICE (Cont.)DC MOTOR AND GRIND CHAMBER - G1MD ONLY FIG. 6 DC MOTOR AND GRIND CHAMBERP1706Location:The motor is located inside the upper part of t

2BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTYBunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:1) All equipment other than as s

20SERVICE (Cont.)DC MOTOR AND GRIND CHAMBER - G1MD ONLY (cont.) BLU to BLU from Rectifier BLU to WHI/BLU fromRelay (3)RED to Rectifier (-)BLK to Rectifie

21SERVICE (Cont.)DC MOTOR AND GRIND CHAMBER - G1MD ONLY (cont.) FIG. 8 MOTOR AND GRIND CHAMBER REMOVALP17115 7 61618 1 19 179

22SERVICE (Cont.)P1022Location: The motor is located inside the hopper assembly.Test Procedures:1. Disconnect grinder from the power supply.2. On M

23SERVICE (Cont.)1. Retaining Ring W/Hopper Gasket2. Slide Plate, Solenoid Plunger and Spring3. Spacer Plate4. Mounting Ring, Solenoid and Solenoi

24SERVICE (Cont.)20. Remove the two #8-32 flat head screws securing the motor cover (18) to the motor and housing assembly (17) and remove the cover. S

25SERVICE (Cont.)DECHAFFER (Models LPG & FPG)FIG. 13 DECHAFFERP1062Location: The dechaffer spring plates are located in the burr housing cap. 1FI

26SERVICE (Cont.)2. The entire wiring harness must be fed into the bottom of the grinder housing through the hole in the motor mounting plate.3. Rem

2701234567891011121314151. Indicator Adjustment Cap & Decal2. Adjusting Screw3. Burr Housing Cap4. Rotor Cup5. Shear Plate9876543216. Rotor7.

28SERVICE (Cont.)SNUBBER (Models G9, G9-2, MHG)COARSE FINETHOROUGHLY CLEAN GRIND CHAMBER BEFORE REASSEMBLY EMPTY HOPPER BEFORE REMOVING THIS COVER

29CALIBRATION1. Place empty funnel into funnel rails.2. Press and hold the right hidden (copyright) button until the “MACHINE TYPE” menu appears. (S

3CONTENTSWarranty and Trademark ...3Introduction ...

30P1745FIG. 20 CAPACITORLocation: The capacitor is located inside the front panel of the hopper housing next to the Off/On/Start switch.Test Procedur

31SERVICE (Cont.)Circuit Breaker (Models LPG, LPG-2E, FPG, FPG-2 DBC)P1036FIG. 22 CIRCUIT BREAKERP1037FIG. 23 CIRCUIT BREAKER TERMINALSRED from Motor-

32SERVICE (Cont.)P1038Hopper Selector Switch (Model LPG-2E only)P1029Location: The Hopper Selector Switch is located in thelower left front of the ho

33SERVICE (Cont.)Hopper Selector Switch (Model G9-2 only)FIG. 26 HOPPER SELECTOR SWITCHP594Location: The hopper selector switch is located in the cen

34SERVICE (Cont.)Location: The Off/On/Start switch is located to the left side on the front of the housing above the upper front inspec-tion panel.T

35SERVICE (Cont.)URNOFFSTARTONCARAFEP1300Location: The Urn/Carafe switch is located to the left side on the front of the housing above the upper insp

36SERVICE (Cont.)FIG 32 BATCH SELECTOR SWITCHLocation: The batch selector switch is located on the left front of the hopper housing.Test Procedure:1.

37SMALL MEDIUM LARGEP2946SERVICE (Cont.)FIG 34 POTENTIOMETERSLocation: The potentiometer switches are located on the top rear of the hopper housing.T

38SERVICE (Cont.)+ACACRemoval and Replacement:1. Disconnect the wires from the rectifier.2. Remove the #10-32 screw securing the rectifier to the moto

39SERVICE (Cont.)Location:The relay is located on the timer bracket in the grinder base. The bracket can be removed by loosening the two 8-32 screws b

4INTRODUCTION The Grinder will store various amounts of whole bean coffee and grind it to a preset grind and amount into an awaiting funnel and filter

40SERVICE (Cont.)Location: The relay is located on the grinder base inside the lower housing.Test Procedure:1. Disconnect the grinder from the power

41SERVICE (Cont.)WHI/BLU fromMotor to Relay K-4WHI/ORN from Bag Sensor Switch (A)FIG. 41 RELAY TERMINALSP1707RELAY (cont.)WHI to MainHarness 120V (B)R

42SERVICE (Cont.)Location:The relay is located either on the timer bracket or on the component mounting bracket in the grinder base. The bracket can b

43SERVICE (Cont.)Location: The slide plates are located on the solenoid mount-ing plate immediately beneath the hopper openings. The slide plates mu

44SERVICE (Cont.)Location: The slide plates are located on the solenoid mount-ing plate immediately beneath the hopper openings. The slide plates mu

45SERVICE (Cont.)LeftRightWHI/ORN to Timer P4-4RED/BLK to Right SolenoidRED/BLK to Timer P4-7WHI/YEL to Timer P4-5RED/BLK to Left SolenoidP612Location

46SERVICE (Cont.)Timer (Model LPG-2E)P1061Location: The timer is located inside the hopper housing just behind the left solenoid.Test Procedure:1. D

47SERVICE (Cont.)Timer (Model LPG-2E)Timer (Models LPG, FPG)P1748FIG. 49 TIMERLocation: The timer is located inside the rear access panel. Adjustment

48SERVICE (Cont.)Location: The timer is located on the timer bracket in the grinder base. The bracket can be removed by loosening the two 8-32 screws

49SERVICE (Cont.)DISPENSE TIME (Seconds)DISPLAYIncreaseDecreaseReadout will be displayed for 5 minutes.Timer can only be adjustedwhile readout is disp

541545 111711Figure 1Step 1 - Remove & discard tape holding funnel arm in place. (Figure 1)Step 2 - Remove & discard two silicon tubes between

50SERVICE (Cont.)Control Board (Model MHG)Location:The control board is located on the component mounting bracket mounted to the grinder base inside t

51SERVICE (Cont.)Control Board (Models FPG-2 & G9-2 DBC)Location:The control board is located inside the hopper housing behind the membrane switch

52SERVICE (Cont.)Membrane Switches (Model MHG only)Location:The membrane switch is located on the front of the hopper housing.Test Procedure:1. Press

53PERSONAL INJURYHAZARD.KEEP FINGERS ANDFOREIGN OBJECTSOUT OF HOPPER OR CHUTE OPENING.CAUTIONSERVICE (Cont.)Membrane Switches (Models FPG-2 & G9-2

54SERVICE (Cont.)EMI Filter (Models FPG & FPG-2)FIG 60 EMI FILTERFIG 61 EMI FILTER TERMINALSLocation: The EMI Filter is located inside the rear c

55SERVICE (Cont.)Funnel Sensing Coil (Models MHG & G9-2 DBC)Location:The funnel sensing coil is located inside of the coil cover.Test Procedure:1.

56SERVICE (Cont.)Memory Clock Board (Model MHG)Location:The memory clock board is located on the component mounting bracket mounted to the grinder bas

57Display Board (Model MHG)Location: The display board is located inside the hopper housing behind the membrane switch.Test Procedure:1. Press and h

58TRIAC MAP for MHG MOV1 controls Transformer @ J5-4,5,6 TH1 & MOV2 controls Left Gate @ J5-3 TH2 & MOV3 controls Relay

59TRIAC MAP for FPG-2 DBC and G9-2 DBC TH1 & MOV1 controls Left Gate @ J1-1 TH2 & MOV2 controls Relay @ J1-2 TH3 & MOV

6Model G9-2Off/On/Start SwitchOFF - (upper position) Switching to this position stops all operation of the grinder.ON - (middle position) The switch w

60SCHEMATIC WIRING DIAGRAM G9-2 DBC, G9-2T DBC W/SMART FUNNEL™ N WHI BLK L1 LEFT GATE LIMIT THERMOSTAT LIMIT THERMOSTAT SOL SOL WHI/ORA WHI/GRN WHI/YE

61SCHEMATIC WIRING DIAGRAM G9-2 DBC, G9-2T DBC W/SMART FUNNEL™ N WHI BLK L1 LEFT GATE LIMIT THERMOSTAT LIMIT THERMOSTAT SOL SOL WHI/ORA WHI/GRN WHI/YE

62SCHEMATIC WIRING DIAGRAM G9-2TB DBC W/SMART FUNNEL™ N WHI BLK L1 LEFT GATE LIMIT THERMOSTAT LIMIT THERMOSTAT SOL SOL WHI/ORA WHI/GRN WHI/YEL BLK WHI

63SCHEMATIC WIRING DIAGRAM MHG N BLK WHI L1 RIGHT GATE LEFT HOPPER SENSOR LIMIT THERMOSTAT LIMIT THERMOSTAT WHI/YEL WHI/YEL WHI/GRN WHI/ORN WHI/ORN YE

64WIRING DIAGRAMS1 5 10 16J194J61J1251J15198STATICSHIELDSWITCH UNIT ASSYRIGHT HOPPER COILLEFT HOPPER COILFUNNEL COILT1LOADLINEVIOVIOORGORGYELYELK1RIGH

6527103.0000D 04/07 ©1996BUNN-O-MATIC CORPORATIONSCHEMATIC WIRING DIAGRAMLPG-2E, LPGB-2ENL1BLKREDWHI100 VOLTS AC120 VOLTS AC2 WIRESINGLE PHASE60 H

66WIRING DIAGRAMS41545 122209

67BLKWHIREDRED10529.0000C 3/92 © 1990BUNN-O-MATIC CORPORATIONSCHEMATIC WIRING DIAGRAMLPG & LPG2NL1BLKP1234561REDWHI/BLKBLKWHI/BLUWHI/BRNWHIG

68BLKWHIREDRED10529.0002E 8/01 © 1990BUNN-O-MATIC CORPORATIONSCHEMATIC WIRING DIAGRAMLPG-AL2L1BLKP1234561REDWHI/BLKBLKWHI/BLUWHI/BRNWHIGRNREDWHI/B

69BLKWHIREDRED10529.0003E 10/98 © 1998 BUNN-O-MATIC CORPORATIONSCHEMATIC WIRING DIAGRAMLPG W/CapacitorL1P123456112REDWHI/BLKBLKWHI/BLUWHI/BRNWHI

7URNOFFSTARTONCARAFEP1300Batch Selector Switch (Optional) URN - Switching to this position allows the correct amount of beans to be dispensed when gr

70BLKWHIREDRED10529.0001D 10/98 © 1990BUNN-O-MATIC CORPORATIONSCHEMATIC WIRING DIAGRAMLPG-BNL1BLKP1234561REDWHI/BLKBLKWHI/BLUWHI/BRNWHIGRNREDWHI/B

71WHI/VIOWHI/VIOWHI/BLUWHI/ORA1 or AGRN or GRN/YEL230V GRN/YELL1NSW1BLK WHI/REDSW2K0 or BML1 L2100 VOLT AC120 VOLT AC230 VOLT AC240 VOLT AC 2 WIRE +

7210173-0000F 4/91 © 1987 BUNN-O-MATIC CORPORATIONWHI/GRNBLKK1WHI/BLUML2L1120 VOLTS AC2 WIRESINGLE PHASE60 HZL1 NGREENK1 N.O.SCHEMATIC WIRING DIA

7310187-0000C 02/08© 1987 BUNN-O-MATIC CORPORATIONWHI/GRNBLKK1WHI/BLUML2L1230 VOLTS AC2 WIRE + GNDSINGLE PHASE50 HZL1 L2GREENK1 N.O.SCHEMATIC WIRI

744 3 WHI/GRN 1 BLK WHI/BLU L2 L1 120 VOLTS AC2 WIRESINGLE PHASE60 HZ10388-0000B 12/88 © 1988 BUNN-O-MATIC CORPORATION L1 N GREEN K1 N.O. SCHEMATI

75BLUVIOYELGRYTANORARED/BLKWHIWHI/GRNWHI/ORAWHI/YELRED/BLKBLKWHI/REDWHI/BLUML2L1WHI/BLUWHI/BLKYEL230 VOLTS AC2 WIRESINGLE PHASE50 HZ10768.0000E 05/03

76WIRING DIAGRAMS41545 122209

77WIRING DIAGRAMSBLKWHIREDRED36781.0000A 04/04 ©2004BUNN-O-MATIC CORPORATIONSCHEMATIC WIRING DIAGRAMFPGNL1REDWHI/BLKBLKWHI/BLUWHI/BRNWHIREDWHI/BL

78WIRING DIAGRAMSSCHEMATIC WIRING DIAGRAMFPG-2 DBC, FPGB-2 DBCNWHIWHI/BLKBLKL1LEFT GATELIMIT THERMOSTATLIMIT THERMOSTATSOLSOLWHI/ORAWHI/GRNWHI/YELREDW

79WIRING DIAGRAMSNL1LEFTGATELIMITTHERMOSTATLIMITTHERMOSTATSOLWHI/ORAWHI/ORAWHI/GRNWHI/YELWHI/YELREDWHIWHIWHIWHIWHI/BLKWHIWHIWHIWHIGRN GRNWHIWHIJ1-6J1-

8Model G9-2T DBCGrind Pad (a)Pressing initiates a timed grind cycle.Stop Pad (b)Pressing ends the operation of the grinder.® PAD (c)Pressing the ® pad

9OPERATING CONTROLS (Continued)P2947P2947Model FPGOff/On/Start Switch OFF - (upper position) Switching to this position stops all operation of the gr