Manuals / Bunn / Kitchen Appliance / Coffee Grinder

Bunn LPG-2, G9WD, G2 TRIFECTA, G9-2T DBC, FPG-2 service manual Membrane Switch, SERVICE Cont

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

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FIG 58 MEMBRANE SWITCH

SERVICE (Cont.)

Membrane Switches (Models FPG-2 & G9-2 DBC)

FIG 58 MEMBRANE SWITCH

Location:

The membrane switch is located on the front of the hopper housing.

Test Procedures:

NOTE: Before continuing, check that the ribbon cable is properly connected to the control board and not a pin off in either direction.

1.Disconnect the dispenser from the power source.

2.Remove the rear panel and disconnect ribbon cable.

3.Check for continuity of the switches using pin #1as common.

A1	- #5	Grind
A2	- #6	Stop
B2	- #10	Hidden Button "Right"
C1	- #2	Large Batch Size "Left"
C2	- #3	Medium Batch Size "Left"
C3	- #4	Small Batch Size "Left"
C4	- #9	Large Batch Size "Left"
C5	- #8	Medium Batch Size "Left"
C6	- #7	Small Batch Size "Left"
	- #1	Nuetral

If continuity is not present when the appropriate switch is pressed, the Membrane Switch must be replaced. If continuity is present, chech the short harness going to J6 on the Control Board.

Removal and Replacement

1.Disconnect the grinder from the power supply.

2.Remove the rear access panel.

3.Disconnect the membrane switch harness from the control board.

4.Carefully peel the membrane switch from the front of the switch bezel.

5.Remove any excess adhesive from the bezel sur- face.

6.Remove the backing from the new membrane switch.

7.Feed the membrane switch harness through the openning and apply the new membrane switch to the switch bezel.

8.Connect the switch harness to the control board.

To Control Board J6

		SHIELD
		11						1
B2	C4	C5	C6	A2	A1	C3	C2	C1
		SWITCH UNIT ASSY

FIG 59 MEMBRANE SWITCH

53	41545 122209

Image 53

Bunn LPG-2, G9WD, G2 TRIFECTA, G9-2T DBC, FPG-2 service manual Membrane Switch, SERVICE Cont

Contents

SERVICE & REPAIR MANUAL BUNN-O-MATICCORPORATIONGRINDERS Includes MHG, FPG FPG-2, LPG-2,G1, G2, G3BUNN-O-MATICCOMMERCIAL PRODUCT WARRANTY CONTENTS CAPACITY CHART RECOMMENDED DAILY CLEANINGINTRODUCTION ADJUSTMENTSSEE INSTRUCTIONS BELOW BEFORE USING MUST BE COMPLETED BY AUTHORIZED SERVICE PERSONNELG9 WD - Packaging & Shim Removal DO NOT PLUG INHopper Selector Switch Off/On/Start SwitchBatch Selector Switch Optional Dispense TimerModel G9 OPERATING CONTROLS ContinuedModels G1, G2, G3 & G2 trifecta Models LPG, LPG-2EModel G9-2TDBC Power ON/OFF Pad e 100V ModelsOPERATING CONTROLS Continued Model MHG OPERATING CONTROLS Continued Model FPG Batch Selector SwitchModel FPG-2DBC PAD cProblem TROUBLESHOOTINGProbable Cause RemedyProblem TROUBLESHOOTING contProbable Cause RemedyProbable Cause ProblemRemedy HoppersPROBABLE CAUSE PROBLEMREMEDY TROUBLESHOOTING contComponent Access SERVICEComponent Locations P602CUP SENSOR SWITCH MODEL G2 TRIFECTA SERVICE ContBAG SENSOR SWITCH Models G1, G2, G3 or SERVICE Cont AC MOTOR AND GRIND CHAMBERSERVICE Cont AC MOTOR AND GRIND CHAMBER contFIG. 5 GRIND CHAMBER COMPONENTS SERVICE ContAC MOTOR AND GRIND CHAMBER cont Location SERVICE ContSERVICE Cont DC MOTOR AND GRIND CHAMBER - G1MD ONLY contDC MOTOR AND GRIND CHAMBER - G1MD ONLY cont SERVICE Cont12.Slide burr auger rotor/spring assembly and burr SERVICE Cont MOTOR Models LPG & FPG11.Lay motor on it’s side SERVICE ContMOTOR Models LPG & FPG MOTOR Models LPG & FPG SERVICE Cont21.Discard old motor and housing assembly SERVICE Cont DECHAFFER Models LPG & FPGFIG. 15 MOTOR MOTOR Models G9, G9-2,MHGSERVICE Cont FIG. 16 MOTOR WIRINGReplace if excessively worn or damaged FIG. 17 MOTOR AND GRIND CHAMBERNOTE Burrs must be replaced as a set SERVICE ContSERVICE Cont SNUBBER Models G9, G9-2,MHGSERVICE Cont Grinder Scale Model G9WD only CALIBRATIONLEVEL 2 FUNCTIONS FIG. 20 CAPACITOR Capacitor Model LPG onlySERVICE Cont 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 FPGFIG 34 POTENTIOMETERS Potentiometer Model FPGSERVICE Cont 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 ContReplace if excessively worn or damaged Hopper Slide Plates Models MHGSERVICE Cont wires, and proceed to #7 SERVICE ContSERVICE Cont Timer Model LPG-2ETimer Model LPG-2E Timer Models LPG, FPGSERVICE Cont SERVICE Cont Timer Model G9Digital Timer Timer Model G9-2Analog Timer FIG 52 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 & G9-2DBCSERVICE Cont Memory Clock Board Model MHGMEMORY BOARD GRN WHI RED BLKSERVICE Cont Display Board Model MHGTRIAC MAP for MHG TRIAC MAP for FPG-2DBC and G9-2DBC WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM2WIRE SINGLE PHASE 50/60 HZ G9-2DBC, G9-2TDBC W/SMART FUNNELWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM2WIRE SINGLE PHASE 50/60 HZ G9-2DBC, G9-2TDBC W/SMART FUNNELWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM G9-2TBDBC W/SMART FUNNEL100 VOLTS AC 2WIRE SINGLE PHASE 50 HZ 50/60 HZ 2WIRE SINGLE PHASESCHEMATIC WIRING DIAGRAM MHG WIRING DIAGRAMSWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM MHG with WD CBA2 WIRE + Gnd SINGLE PHASE, 50/60HZ 100 VOLTS AC, 120 VOLTS AC 240 VOLTS ACLPG-2E, LPGB-2E SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS 100 VOLTS AC 120 VOLTS AC 2 WIRE SINGLE PHASEWIRING DIAGRAMS 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPGWIRING DIAGRAMS LPG-ASCHEMATIC WIRING DIAGRAM 230 VOLTS AC 2 WIRE SINGLE PHASE 50/60 HZ120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAMLPG W/Capacitor 100 VOLTS AC 2 WIRE SINGLE PHASE 50-60HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG-BSCHEMATIC WIRING DIAGRAM G1, G2, G3 & G2 trifecta WIRING DIAGRAMS2 WIRE + GRD SINGLE PHASE 50/60 HZ 100 VOLT AC 120 VOLT AC 230 VOLT AC 240 VOLT ACSCHEMATIC WIRING DIAGRAM G9-URN/CARAFE SCHEMATIC WIRING DIAGRAM G9120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 2 WIRE50 HZ SCHEMATIC WIRING DIAGRAM G9A HDWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM G9WD-RHSCHEMATIC WIRING DIAGRAM G9 SCHEMATIC WIRING DIAGRAM G9WIRING DIAGRAMS 120 VOLTS AC 2WIRE SINGLE PHASE 60 HZWIRING DIAGRAMS 230 VOLTS AC 2 WIRE SINGLE PHASE 50 HZSCHEMATICWIRINGDIAGRAMG9-2AHD WIRING DIAGRAMS WIRING DIAGRAMS FPGA120 VOLTS AC 2WIRE SINGLE PHASE 60 HZ 230 VOLTS AC 2WIRE SINGLE PHASE 50/60 HZWIRING DIAGRAMS 100 VOLTS AC 120 VOLTS AC 2WIRE SINGLE PHASEFPG-2DBC, FPGB-2DBC 60 HZ230 VOLTS AC FPG-2ADBC50 HZ SCHEMATIC WIRING DIAGRAM