Bunn FMD-3 service manual Dripping from dispense tip Lime build-up, Leaks, Cold

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TROUBLESHOOTING (cont.)
PROBLEM	PROBABLE CAUSE
Dripping from dispense tip	1. Lime build-up
	CAUTION - Tank and tank compo-
	nents should be delimed regularly
	depending on local water conditions.
	Excessive mineral build-up on stain-
	less steel surfaces can initiate corro-
	sive reactions resulting in serious
	leaks.

REMEDY

Inspect the tank assembly for exces- sive lime deposits. Delime as re- quired.

2.Dispense solenoid valve (Hot or Cold)

Remove the dispense solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary. See page 29 or 30

Water flows into tank continuously 1.	Level control board and probe	Refer to Service - Level Control Board
		and Probe for testing procedures.
		See page 24
2.	Solenoid valve (Inlet)	Refer to Service - Solenoid Valve
		(Inlet) for testing procedures. See
		page 31
3.	Overflow Protection Switch	Refer to Service - Overflow Protec-
		tion Switch for testing procedures.
		See page 27

Product overflows container	1. Dispense switch
	2. Dispense solenoid valve (Hot or
	Cold)

Refer to Service - Dispense Switch for testing procedures. See page 17

Remove the solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary. See page 29 or 30

9	28364 011598

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Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisFMD-2 FMD-3 BUNN-O-MATIC Commercial Product Warranty28368.0000 00656.0000 00831.000026536.0002 FMD-2Initial SET-UP Plumbing HOOK-UP Initial Fill & HeatDraining the HOT Water Tank Remedy Problem Probable CauseTroubleshooting Replacement Control thermostatStat for testing procedures. See Dripping from dispense tip Lime build-up Product overflows container Dispense switchLeaks ColdProbable Cause Remedy ProblemDispenser is making unusual Refer to Service Lamp, see page 23 for lamp replacementNoises Water Supply Tank Heater Excess dust Fan Display not lit Lamp Lamp Holder Starter Lamp BallastComponent Access ContentsAuger Drive Components If voltage is present as described, proceed to #5 Hopper Lid Auger Wire Agitator Disc AssyOff of the auger drive shaft Auger Drive Shaft Optional Bushing Ejector ElbowRemove dust seal 18 from auger motor Auger Drive ComponentsRefer to when reconnecting the wires BallastHarness BLK to BLU From Door Interconnect Control Thermostat Remove temperature probe from the tankDispense Switch Control ThermostatLocation Dispense Switch FANLocation Frother and Whipper Motor FANSteam Collector Ring Mixing Chamber #8-32 Acorn Nut Washer Ring Nut FrotherFrother and Whipper Motor Whipper Motor Terminals P1451.40 Hopper Delay BoardDisconnect the wires from the switch termi- nals HOT/COLD Switch OptionalLamp Holder Lamp Replacement Refer to FigDoor Assy Upper Panel Lamp Holders Lower Panel Remove the outside window and display graphicAs assembly Lamp Starter and SocketLevel Control Board and Level Probe Level Control Board and Level Probe Limit Thermostat Limit ThermostatOverflow Protection Switch From Main HarnessBoard RINSE/RUN Switch Rinse /RUN SwitchCold Water Solenoid Valve Solenoid Valve Cold Water OptionalSolenoid Valves Dispense Cold Water Solenoid TerminalsSolenoid Valve Inlet Solenoid Valves DispenseTank Heater Solenoid Valve InletMain Wiring Thermostat Harness Tank Heater SwitchTank Heater Tank Heater Switch Terminals Tank Heater SwitchSchematic Wiring Diagram FMD-1, FMD-2, & FMD-3 Schematic Wiring Diagram FMDA-1, FMDA-2, & FMDA-3