Manuals / Bunn / Kitchen Appliance / Coffee Grinder

Bunn LPG-2, G9WD, G1 Relay Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBC, SERVICE Cont

Models: FPG-2 G1 FPG G9-2T DBC G9-2 G9 G9WD LPG-2

1 79

Download 79 pages 29.77 Kb

Page 42

Relay (Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBC)

SERVICE (Cont.)

Relay (Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBC)

FIG 42 RELAY

Location:

The relay is located either on the timer bracket or on the component mounting bracket in the grinder base. The bracket can be removed by loosening the two 8-32 screws beneath the timer dial.

Test Procedure:

1.Disconnect the grinder from the power supply.

2.Access the relay and remove the wires from all terminals.

3.With an ohmmeter, check for continuity between the 0 and 1 terminals.

4.With an ohmmeter, check that there is an open circuit between terminals 2 and 4, and between terminals 6 and 8.

Removal and Replacement

1.Disconnect the grinder from the power supply.

2.Remove all wires from the relay terminals.

3.Remove the two 8-32 screws attaching the relay to the mounting bracket.

4.Refer to Fig 43 when connecting relay wires.

FIG 43 RELAY TERMINALS

If continuity is present as described, reconnect the wires, the relay is operating properly.

If continuity is not present as described, replace the relay.

42	41545 122209

Image 42

Bunn LPG-2, G9WD, G9-2T DBC Relay Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBC, SERVICE Cont, Relay Terminals

Contents

GRINDERS BUNN-O-MATIC CORPORATIONSERVICE & REPAIR MANUAL Includes MHG, FPG FPG-2, LPG-2, G1, G2, G3 G2 trifecta, G9, G9WDBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY CONTENTS INTRODUCTION RECOMMENDED DAILY CLEANINGCAPACITY CHART ADJUSTMENTSG9 WD - Packaging & Shim Removal MUST BE COMPLETED BY AUTHORIZED SERVICE PERSONNEL DO NOT PLUG INSEE INSTRUCTIONS BELOW BEFORE USING housing. FigureBatch Selector Switch Optional Off/On/Start SwitchHopper Selector Switch Dispense TimerModels G1, G2, G3 & G2 trifecta OPERATING CONTROLS ContinuedModel G9 Models LPG, LPG-2EPower ON/OFF Pad e 100V Models OPERATING CONTROLS Continued Model MHGModel G9-2T DBC Model FPG-2 DBC Batch Selector SwitchOPERATING CONTROLS Continued Model FPG PAD cProbable Cause TROUBLESHOOTINGProblem RemedyProbable Cause TROUBLESHOOTING contProblem RemedyProbable Cause ProblemRefer to Service - Snubber for re RemedyREMEDY PROBLEMPROBABLE CAUSE TROUBLESHOOTING contComponent Locations SERVICEComponent Access P602SERVICE Cont BAG SENSOR SWITCH Models G1, G2, G3 orCUP SENSOR SWITCH MODEL G2 TRIFECTA AC MOTOR AND GRIND CHAMBER SERVICE ContAC MOTOR AND GRIND CHAMBER cont SERVICE ContSERVICE Cont AC MOTOR AND GRIND CHAMBER contFIG. 5 GRIND CHAMBER COMPONENTS SERVICE Cont DC MOTOR AND GRIND CHAMBER - G1MD ONLYDC MOTOR AND GRIND CHAMBER - G1MD ONLY cont SERVICE ContSERVICE Cont 12. Slide burr auger rotor/spring assembly and burrDC MOTOR AND GRIND CHAMBER - G1MD ONLY cont MOTOR Models LPG & FPG SERVICE ContFIG. 10 MOTOR REMOVAL SERVICE Cont MOTOR Models LPG & FPG8. Remove spacer plate 3 and set aside for reas- sembly SERVICE Cont 21. Discard old motor and housing assemblyMOTOR Models LPG & FPG FIG. 14 DECHAFFER REMOVAL/REPLACEMENT DECHAFFER Models LPG & FPGSERVICE Cont OPTONAL EXTRASERVICE Cont MOTOR Models G9, G9-2, MHGFIG. 15 MOTOR FIG. 16 MOTOR WIRINGNOTE Burrs must be replaced as a set FIG. 17 MOTOR AND GRIND CHAMBERReplace if excessively worn or damaged SERVICE ContSNUBBER Models G9, G9-2, MHG SERVICE ContWHI/ BLU to Snubber Grinder Scale Model G9WD only CALIBRATION LEVEL 2 FUNCTIONSSERVICE Cont Capacitor Model LPG only SERVICE ContFIG. 20 CAPACITOR Circuit Breaker Models LPG, LPG-2E, FPG, FPG-2 DBC SERVICE ContRED from Motor-LPG-2E BLK from Start Switch-LPG BLK from Power Cord FIG. 24 HOPPER SELECTOR SWITCH Hopper Selector Switch Model LPG-2E onlySERVICE Cont WHI to OFF/ON/START Switch BLU to Timer P1-4 bluHopper Selector Switch Model G9-2 only SERVICE ContFIG. 26 HOPPER SELECTOR SWITCH WHI/RED timer to P4-6 BLU to SW2 PNK to Intf conn SERVICE ContVIO to timer P1-2 BLK to Cordset BLK to timer P4-1 VIO to timer P1-2 BLK to Cordset WHI/RED timer to P4-6Urn/Carafe Switch Models G9, G9-2 SERVICE ContFIG 30 URN/CARAFE SWITCH Batch Selector Switch Model FPG SERVICE ContORN to TIMER Potentiometer Model FPG SERVICE ContFIG 34 POTENTIOMETERS Rectifier Models G1 MD, FPG-2 DBC SERVICE ContFIG. 37 RECTIFIER TERMINALS Single set timer shown Relay Early Model G-9SERVICE Cont Multi set timer Urn/Carafe similarRelay Models G1, G2, G3, G2 trifecta SERVICE ContRELAY cont SERVICE ContFIG. 41 RELAY TERMINALS FIG 42 RELAY Relay Models MHG, FPG-2 DBC, Late Model G-9, G9-2, G9-2 DBCSERVICE Cont FIG 43 RELAY TERMINALSSERVICE Cont 5. Inspect the slide plates after reassembly. They must move freelyThe slide plates must always remain flat for proper operation Replace if excessively worn or damaged5. Inspect the slide plates after reassembly. They must move freely Hopper Slide Plates Models MHGSERVICE Cont The slide plates must always remain flat for proper operation7. Check the solenoid for coil action when the control Solenoids Models MHG, FPG-2 DBC, LPG-2, G9-2, G9-2 DBCSERVICE Cont press the Off/On/Start switch to “START” lowerTimer Model LPG-2E SERVICE ContP1061 Timer Model LPG-2E Timer Models LPG, FPGSERVICE Cont P1748Timer Model G9 SERVICE ContIf voltage is present as described, proceed to step SERVICE Cont Timer Model G9-2FIG 52 TIMER Digital TimerFIG 53 CONTROL BOARD Control Board Model MHGSERVICE Cont FIG 54 CONTROL BOARD TERMINALSFIG 55 CONTROL BOARD SERVICE ContControl Board Models FPG-2 & G9-2 DBC TEST SWITCHES? NO YES PRESS RIGHT HIDDEN TO EXIT NOTHING PRESSED Membrane Switches Model MHG onlySERVICE Cont TEST FREQUENCY? NO YESFIG 58 MEMBRANE SWITCH SERVICE ContMembrane Switches Models FPG-2 & G9-2 DBC EMI Filter Models FPG & FPG-2 SERVICE Cont118.0 kΩ - 118.5 kΩ Across either pair FIG 62 FUNNEL SENSING COIL Funnel Sensing Coil Models MHG & G9-2 DBCSERVICE Cont FIG 63 FUNNEL SENSING COIL TERMINALSMEMORY BOARD Memory Clock Board Model MHGSERVICE Cont GRN WHI RED BLKFIG 66 DISPLAY BOARD Display Board Model MHGSERVICE Cont To Control Board J8TH1 & MOV2 TRIAC MAP for MHG@ J5-4,5,6 TH2 & MOV3TH2 & MOV2 TRIAC MAP for FPG-2 DBC and G9-2 DBCTH1 & MOV1 TH3 & MOV32 WIRE SINGLE PHASE 50/60 HZ SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS G9-2 DBC, G9-2T DBC W/SMART FUNNEL2 WIRE SINGLE PHASE 50/60 HZ SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS G9-2 DBC, G9-2T DBC W/SMART FUNNELSCHEMATIC WIRING DIAGRAM G9-2TB DBC W/SMART FUNNEL 100 VOLTS AC 2 WIRE SINGLE PHASE 50 HZWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM MHG 2 WIRE SINGLE PHASE50/60 HZ WIRING DIAGRAMS100 VOLTS AC, 120 VOLTS AC 240 VOLTS AC 2 WIRE + Gnd SCHEMATIC WIRING DIAGRAM MHG with WD CBAWIRING DIAGRAMS SINGLE PHASE, 50/60HZWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAMLPG-2E, LPGB-2E 100 VOLTS AC 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZWIRING DIAGRAMS WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG-A230 VOLTS AC 2 WIRE SINGLE PHASE 50/60 HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG W/Capacitor 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG-B 100 VOLTS AC 2 WIRE SINGLE PHASE 50-60 HZ2 WIRE + GRD SINGLE PHASE 50/60 HZ WIRING DIAGRAMSSCHEMATIC WIRING DIAGRAM G1, G2, G3 & G2 trifecta 100 VOLT AC 120 VOLT AC 230 VOLT AC 240 VOLT AC120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ SCHEMATIC WIRING DIAGRAM G9SCHEMATIC WIRING DIAGRAM G9-URN/CARAFE 2 WIREWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM G9A HD50 HZ SCHEMATIC WIRING DIAGRAM G9WD-RHWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM G9SCHEMATIC WIRING DIAGRAM G9 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ230 VOLTS AC 2 WIRE SINGLE PHASE 50 HZ SCHEMATICWIRINGDIAGRAMG9-2A HDWIRING DIAGRAMS WIRING DIAGRAMS 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ FPGAWIRING DIAGRAMS 230 VOLTS AC 2 WIRE SINGLE PHASE 50/60 HZFPG-2 DBC, FPGB-2 DBC 100 VOLTS AC 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM50 HZ FPG-2A DBC230 VOLTS AC SCHEMATIC WIRING DIAGRAM