Bunn FMD-3 Dispenser is making unusual, Noises Water Supply Tank Heater Excess dust Fan

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TROUBLESHOOTING (CONT.)
PROBLEM	PROBABLE CAUSE
Dispenser is making unusual	1.	Plumbing Lines
noises
	2.	Water Supply

	3.	Tank Heater
Excess dust	1. Fan
	2.	Hopper Delay Board
Display not lit	1. Lamp
	2.	Lamp Holder
	3.	Starter - Lamp
	4.	Ballast

REMEDY

Plumbing lines should not be rest- ing on the counter top.

(A)The dispenser must be connected to a cold water line

(B)Water pressure to the dispenser must not exceed 90 psi 620 kPa). Install a regulator if necessary to lower the working pressure to ap- proximately 50 psi (345 kPa).

Remove and clean lime off the tank heater. See page 32

Refer to Service - Fan for testing procedures. See page 18

Refer to Service - Hopper Delay Board for testing procedures. See page 21

Refer to Service - Lamp, see page 23 for lamp replacement.

Refer to Service - Lamp Holder for testing procedures. See page 23

Refer to Service - Starter for testing procedures. See page 24

Refer to Service - Ballast for testing procedures. See page 15

11	28364 051100

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Contents Phone 217 529-6601 FAX 217 Post Office BOX SPRINGFIELD, IllinoisFMD-2 FMD-3 BUNN-O-MATIC Commercial Product WarrantyFMD-2 00656.0000 00831.000028368.0000 26536.0002Initial SET-UP Plumbing HOOK-UP Initial Fill & HeatDraining the HOT Water Tank Remedy Problem Probable CauseStat for testing procedures. See TroubleshootingReplacement Control thermostat Cold Product overflows container Dispense switchDripping from dispense tip Lime build-up LeaksProbable Cause Remedy ProblemDisplay not lit Lamp Lamp Holder Starter Lamp Ballast Refer to Service Lamp, see page 23 for lamp replacementDispenser is making unusual Noises Water Supply Tank Heater Excess dust FanAuger Drive Components Component AccessContents Auger Drive Shaft Optional Bushing Ejector Elbow Hopper Lid Auger Wire Agitator Disc AssyIf voltage is present as described, proceed to #5 Off of the auger drive shaftRemove dust seal 18 from auger motor Auger Drive ComponentsHarness BLK to BLU From Door Interconnect Refer to when reconnecting the wiresBallast Control Thermostat Remove temperature probe from the tankLocation Dispense SwitchControl Thermostat Location Dispense SwitchFAN Washer Ring Nut Frother FANFrother and Whipper Motor Steam Collector Ring Mixing Chamber #8-32 Acorn NutFrother and Whipper Motor Whipper Motor Terminals P1451.40 Hopper Delay BoardDisconnect the wires from the switch termi- nals HOT/COLD Switch OptionalRemove the outside window and display graphic Lamp Replacement Refer to FigLamp Holder Door Assy Upper Panel Lamp Holders Lower PanelLevel Control Board and Level Probe As assemblyLamp Starter and Socket Level Control Board and Level Probe Limit Thermostat Limit ThermostatBoard Overflow Protection SwitchFrom Main Harness 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 InletTank Heater Main Wiring Thermostat HarnessTank Heater Switch Tank Heater Switch Terminals Tank Heater SwitchSchematic Wiring Diagram FMD-1, FMD-2, & FMD-3 Schematic Wiring Diagram FMDA-1, FMDA-2, & FMDA-3