Schematic Wiring Diagram Single TF DBC | Bunn S/N SNG0033000 & UP

L1 L2

GRN

BLK

RED

	MAIN ON/OFF SWITCH
	(Late Models only)
RED-14		RED-14
BLK-14		BLK-14

LIMIT THERMOSTAT

BLK-14 BLK-14

SCHEMATIC WIRING DIAGRAM

SINGLE TF DBC

RED-14

BLK-14

	TRIAC		TANK HEATER
MT2	MT 1	BLU-14		RED-14

			SWITCH UNIT ASSEMBLY
					REFILL
					SOL	RED
					SOL
	FUNNEL SENSOR			BYPASS
	FUNNEL SENSOR					RED
	VIO			SOL		RED
	VIO			SOL
	WHI/VIO		VIO		BREW
			VIO
					SOL	RED
					SOL
			WHI/GRN
			GRY	RED	RED
	WHI			RED	RED
	WHI	CONTROL PC BOARD		N.C.
		CONTROL PC BOARD	TAN	N.C.
	PNK		TAN		OVERFLOW
			YEL		OVERFLOW
			YEL	PROTECTION SWITCH
	BLK		BLK	PROTECTION SWITCH
	BLK		BLK
	TEMP PROBE		RED
WATER LEVEL	TEMP PROBE		BRN/WHI
PROBE	GRN		BRN/BLK
	GRN
					SOL
					FUNNEL LOCK

	Switch Unit Assembly Codes
A1	Brew	C2	Medium Batch
A2	On/Off	C3	Small Batch
B1	"Hidden" Left	D1	"Digital" Left Hidden Button
B2	"Hidden" Right	D2	"Brewer" Center Hidden Button
C1	Large Batch	D3	"Control" Right Hidden Button

	LED's
L1	Large Batch LED
L2	Medium Batch LED
L3	Small Batch LED
L4	On/Off LED

200,208 or 240 VOLT A.C.

2 WIRE + GND

SINGLE PHASE 50/60HZ

Page 54	35879.1 062107

Page 54

Image 54

Bunn S/N SNG0033000 & UP manual Schematic Wiring Diagram Single TF DBC

Contents

Single TF DBC Phone 217 529-6601 FAX 217 BUNN-O-MATIC Commercial Product Warranty Table of Contents User Notices Volt ac single phase Hz models Electrical HOOK-UP37881.0002 Electrical Requirements Models without power cord 230 volt ac Single phase, 60 Hz models CE Requirements Plumbing RequirementsPlumbing HOOK-UP ON/OFF Switch Enable Brew Main ON/OFF SwitchBatch Selector Switches Brew Switch Initial Setup Coffee Brewing Cleaning Glossary Programming Switches Programming Programming Switch Program Functions Level RecipesDRIP-OUT Times Level Continues to DReturns to a Program Flow Diagram Return to aContinues to Programming the Brewer Units Setting Units of Measure Procedure for modifying units of measure Procedure for Setting the Recipe SET NEW RecipeThis function allows the operator to set Brew SET NEW Recipes Sizes DONE?Refer to SET Pulse Brew for description Procedure to program the coffee name Card Contains Recipe for Review RECIPES? Noyes Next Review RECIPES/MODIFY RECIPES/SET UP no Name Coffee NamesProcedure for reviewing recipes To exit, press Next until the display reads That Brew OZ Setting or Adjusting Brew VOL- Umes Screen Bypass Review Recipes SET Pulse Brew Modifying pulse brew Range 1st on time off to 4 minutes NO-NAME Modifyshownext SET Pulse Brew SET Pulse Brew Easy Pulse Setup SET Pulse Brew Enter Times TIMES?DONE? SET Preinfusion Batches DONE? Setup Complete Enable ADS? Assign RecipesAssign Recipe ? SET Temp SET ReadyScreen Spray OZ/M Bypass OZ/M Calibrate FlowCalibrate Spray .. Press Brew to Start Procedures to calibrate the bypass flow rate Calibrate FlowStart Brew Counters Procedure to set funnel detectProcedures to view/reset the brew counters Funnel Detect optional Procedure to test components outputs Service ToolsTesting individual components outputs Brew Valve Nothing Pressed Frequency Factory Defaults Procedure to set factory defaults Screen Displayed TroubleshootingTroubleshooting Procedures Possible Cause Temperature Press ON/OFF to terminate the cycle Tank Heater failure ON/OFF switch was pressed after the brew cycle was startedPress ON/OFF to terminate the brew cycle Triac Failure Water shut off to brewer Temperature Sensor ProbeWires shorted to housing, or to Broken or not making connection Brew Valve Switch test procedures Equipment will not operate No power or incorrect voltageBrew switch Switch test procedures Data plate within +/- 10% With power removed from brewer Holding it in open state Troubleshooting Problem Possible CauseOverflow Protection Switch When this condition occurs, See above or boiling Limit Thermostat Heating Time TOO Long Troubleshooting Problem Improper water pressure Inconsistent beverage level StrainerServer Pointing towards the brewer 90 psi 138 and 620 kPa Level in server Consistently high or low beverage Brew Volume adjustmentWater temperature For each brew cycle Brewer is making unusual noises Troubleshooting Problem Possible Cause Weak beverageRemove and clean lime off tank heaters Plumbing lines Water Supply Tank Heaters Schematic Wiring Diagram Single TF DBC Schematic Wiring Diagram Wire Single Phase Schematic Wiring Diagram Single TF DBC

SCHEMATIC WIRING DIAGRAM

SINGLE TF DBC

GRN

BRN/BLK

SOL

FUNNEL LOCK