Manuals / Bunn / Kitchen Appliance / Coffee Grinder

Bunn LPG-2, G9WD, G2 TRIFECTA, G9-2T DBC, FPG-2 service manual Relay Early Model G-9, SERVICE Cont

Models: FPG-2 G9-2T DBC G9-2 G2 TRIFECTA G9 G9WD LPG-2

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Page 39

Relay (Early Model G-9)

SERVICE (Cont.)

Relay (Early Model G-9)

	MINUTES-MATICVAC
	-O	120
BUNN -
P/N	2620
Single set timer shown
Multi set timer (Urn/Carafe) similar			P1312
			P1312
FIG 38 RELAY

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 beneath the timer dial.

Test Procedure:

1.Disconnect the grinder from the power supply.

2.Check the voltage across the white/red and white/ green wires of the relay coil with a voltmeter when the Off/On/Start switch is placed in the “START” (right) position and released. Connect grinder to the power supply. The indication must be:

(a)120 volts ac for two wire 120 volt models

(b)240 volts ac for two wire 240 volt models for the approximate setting on the timer.

3.Disconnect the grinder from the power supply.

If voltage is present as described, reconnect the white/red and white/green wires to the relay coil, and proceed to step 4.

If voltage is not present as described, refer to the Wiring Diagrams and check the grinder wiring har- ness.

4.Remove the white/red and white/blue wires from the relay contacts.

5.Check for continuity across the relay contacts when the Off/On/Start switch is placed in the “START” (right) position and released. Connect grinder to the power supply. Continuity must be present for the approximate setting on the timer.

6.Disconnect the grinder from the power supply.

If continuity is present as described, reconnect the white/red and white/blue wires, the relay is operating properly.

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

Removal and Replacement

1.Remove all wires from the relay terminals.

2.Remove the 6-32 screw fastening the relay to the timer bracket.

3.Mount the new relay to the timer bracket and tighten the screw.

4.Refer to the illustration below when reconnecting the wires.

WHI/BLU to Motor L1

WHI/GRN to Timer L4

WHI/RED to Timer TL1

P610

FIG 39 RELAY TERMINALS

39	41545 122209

Image 39

Bunn LPG-2, G9WD, G2 TRIFECTA, G9-2T DBC, FPG-2 service manual Relay Early Model G-9, SERVICE Cont

Contents

Includes MHG, FPG FPG-2, LPG-2,G1, G2, G3 BUNN-O-MATICCORPORATIONSERVICE & REPAIR MANUAL GRINDERSBUNN-O-MATICCOMMERCIAL PRODUCT WARRANTY CONTENTS ADJUSTMENTS RECOMMENDED DAILY CLEANINGCAPACITY CHART INTRODUCTIONDO NOT PLUG IN MUST BE COMPLETED BY AUTHORIZED SERVICE PERSONNELSEE INSTRUCTIONS BELOW BEFORE USING G9 WD - Packaging & Shim RemovalDispense Timer Off/On/Start SwitchHopper Selector Switch Batch Selector Switch OptionalModels LPG, LPG-2E OPERATING CONTROLS ContinuedModel G9 Models G1, G2, G3 & G2 trifectaPower ON/OFF Pad e 100V Models OPERATING CONTROLS Continued Model MHGModel G9-2TDBC PAD c Batch Selector SwitchOPERATING CONTROLS Continued Model FPG Model FPG-2DBCRemedy TROUBLESHOOTINGProblem Probable CauseRemedy TROUBLESHOOTING contProblem Probable CauseHoppers ProblemProbable Cause RemedyTROUBLESHOOTING cont PROBLEMPROBABLE CAUSE REMEDYP602 SERVICEComponent Access Component LocationsSERVICE Cont BAG SENSOR SWITCH Models G1, G2, G3 orCUP SENSOR SWITCH MODEL G2 TRIFECTA SERVICE Cont AC MOTOR AND GRIND CHAMBERSERVICE Cont AC MOTOR AND GRIND CHAMBER contSERVICE Cont AC MOTOR AND GRIND CHAMBER contFIG. 5 GRIND CHAMBER COMPONENTS Location SERVICE ContSERVICE Cont DC MOTOR AND GRIND CHAMBER - G1MD ONLY contSERVICE Cont 12.Slide burr auger rotor/spring assembly and burrDC MOTOR AND GRIND CHAMBER - G1MD ONLY cont SERVICE Cont MOTOR Models LPG & FPGSERVICE Cont MOTOR Models LPG & FPG11.Lay motor on it’s side SERVICE Cont 21.Discard old motor and housing assemblyMOTOR Models LPG & FPG SERVICE Cont DECHAFFER Models LPG & FPGFIG. 16 MOTOR WIRING MOTOR Models G9, G9-2,MHGFIG. 15 MOTOR SERVICE ContSERVICE Cont FIG. 17 MOTOR AND GRIND CHAMBERReplace if excessively worn or damaged NOTE Burrs must be replaced as a setSERVICE Cont SNUBBER Models G9, G9-2,MHGGrinder Scale Model G9WD only CALIBRATION LEVEL 2 FUNCTIONSSERVICE Cont Capacitor Model LPG only SERVICE ContFIG. 20 CAPACITOR SERVICE Cont Circuit Breaker Models LPG, LPG-2E,FPG, FPG-2DBCSERVICE Cont Hopper Selector Switch Model LPG-2EonlySERVICE Cont Hopper Selector Switch Model G9-2onlyFIG 28 OFF/ON/START SWITCH SERVICE ContSERVICE Cont Urn/Carafe Switch Models G9, G9-2SERVICE Cont Batch Selector Switch Model FPGPotentiometer Model FPG SERVICE ContFIG 34 POTENTIOMETERS SERVICE Cont Rectifier Models G1 MD, FPG-2DBCSERVICE Cont Relay Early Model G-9SERVICE Cont Relay Models G1, G2, G3, G2 trifectaSERVICE Cont RELAY contLocation SERVICE ContReplace if excessively worn or damaged SERVICE ContHopper Slide Plates Models MHG SERVICE ContReplace if excessively worn or damaged wires, and proceed to #7 SERVICE ContSERVICE Cont Timer Model LPG-2ETimer Models LPG, FPG SERVICE ContTimer Model LPG-2E SERVICE Cont Timer Model G9FIG 52 TIMER Timer Model G9-2Digital Timer Analog TimerSERVICE Cont Control Board Model MHGSERVICE Cont FIG 55 CONTROL BOARDSERVICE Cont Membrane Switches Model MHG onlySERVICE Cont FIG 58 MEMBRANE SWITCHSERVICE Cont EMI Filter Models FPG & FPG-2SERVICE Cont Funnel Sensing Coil Models MHG & G9-2DBCGRN WHI RED BLK Memory Clock Board Model MHGSERVICE Cont MEMORY BOARDSERVICE Cont Display Board Model MHGTRIAC MAP for MHG TRIAC MAP for FPG-2DBC and G9-2DBC G9-2DBC, G9-2TDBC W/SMART FUNNEL SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS 2WIRE SINGLE PHASE 50/60 HZG9-2DBC, G9-2TDBC W/SMART FUNNEL SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS 2WIRE SINGLE PHASE 50/60 HZSCHEMATIC WIRING DIAGRAM G9-2TBDBC W/SMART FUNNEL 100 VOLTS AC 2WIRE SINGLE PHASE 50 HZWIRING DIAGRAMS WIRING DIAGRAMS 2WIRE SINGLE PHASE50/60 HZ SCHEMATIC WIRING DIAGRAM MHG100 VOLTS AC, 120 VOLTS AC 240 VOLTS AC SCHEMATIC WIRING DIAGRAM MHG with WD CBAWIRING DIAGRAMS 2 WIRE + Gnd SINGLE PHASE, 50/60HZ100 VOLTS AC 120 VOLTS AC 2 WIRE SINGLE PHASE SCHEMATIC WIRING DIAGRAMLPG-2E, LPGB-2E WIRING DIAGRAMSWIRING DIAGRAMS 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG230 VOLTS AC 2 WIRE SINGLE PHASE 50/60 HZ LPG-AWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG W/Capacitor120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 100 VOLTS AC 2 WIRE SINGLE PHASE 50-60HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG-B100 VOLT AC 120 VOLT AC 230 VOLT AC 240 VOLT AC WIRING DIAGRAMSSCHEMATIC WIRING DIAGRAM G1, G2, G3 & G2 trifecta 2 WIRE + GRD SINGLE PHASE 50/60 HZ2 WIRE SCHEMATIC WIRING DIAGRAM G9SCHEMATIC WIRING DIAGRAM G9-URN/CARAFE 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZSCHEMATIC WIRING DIAGRAM G9WD-RH SCHEMATIC WIRING DIAGRAM G9A HD50 HZ WIRING DIAGRAMS120 VOLTS AC 2WIRE SINGLE PHASE 60 HZ SCHEMATIC WIRING DIAGRAM G9SCHEMATIC WIRING DIAGRAM G9 WIRING DIAGRAMS230 VOLTS AC 2 WIRE SINGLE PHASE 50 HZ SCHEMATICWIRINGDIAGRAMG9-2AHDWIRING DIAGRAMS WIRING DIAGRAMS 230 VOLTS AC 2WIRE SINGLE PHASE 50/60 HZ FPGAWIRING DIAGRAMS 120 VOLTS AC 2WIRE SINGLE PHASE 60 HZ60 HZ 100 VOLTS AC 120 VOLTS AC 2WIRE SINGLE PHASEWIRING DIAGRAMS FPG-2DBC, FPGB-2DBCSCHEMATIC WIRING DIAGRAM FPG-2ADBC230 VOLTS AC 50 HZ