Manuals / Bunn / Household Appliance / Water Heater

Bunn FMD-1, FMD-2 service manual Problem, Dispenser is making unusual, Remedy

Models: FMD-2 FMD-1

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

3. Tank Heater

1. Fan

Excess dust

2. A) Hopper Drive Board - FMD-1

B) Control board - FMD-2

1. Lamp

Display not lit

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 36

Refer to Service - Fan for testing procedures. See page 23

Refer to Service - Hopper Drive Board for testing procedures. See page 26

Refer to Service - Control Board for testing procedures. See page 19

Refer to Service - Lamp, see page 28 for lamp replacement.

Refer to Service - Lamp Holder for testing procedures. See page 28

Refer to Service - Starter for testing procedures. See page 29

Refer to Service - Ballast for testing procedures. See page 17

12	29112 051200

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Bunn FMD-1, FMD-2 service manual Problem, Dispenser is making unusual, Remedy

Contents

BUNNFMD-1 FMD-2 BUNN-O-MATICCORPORATIONPOST OFFICE BOX SPRINGFIELD, ILLINOIS PHONE 217 529-6601FAXWARRANTY INTRODUCTIONUSER NOTICES USER NOTICES Cont 28964.000028964.0001 PUSH and HOLD BUTTON UNTIL CUPINITIAL SET-UP ELECTRICAL REQUIREMENTSELECTRICAL HOOK-UP PLUMBING REQUIREMENTSRINSE TIMER FMD-2ONLY INITIAL FILL & HEATLIQUID LEVEL CONTROL RUNNING A RINSE SEQUENCECLEANING ADJUSTMENTSHOPPER MOTOR SPEED ADJUSTMENT FMD-1 COLD BEVERAGE SET-UPOPTIONAL FMD-2ONLYDRAINING THE HOT WATER TANK TROUBLESHOOTING PROBLEMPROBABLE CAUSE REMEDYTROUBLESHOOTING cont PROBLEMPROBABLE CAUSE REMEDYTROUBLESHOOTING cont PROBLEMPROBABLE CAUSE Water is not hot ContPROBLEM PROBABLE CAUSEREMEDY Product overflows containerPROBLEM Dispenser is making unusualREMEDY SERVICE COMPONENT ACCESSContents AUGER DRIVE COMPONENTS FMD-1AUGER DRIVE COMPONENTS - FMD-1CONT SERVICESERVICE cont AUGER DRIVE COMPONENTS - FMD-1contAUGER DRIVE COMPONENTS - FMD-2 AUGER DRIVE COMPONENTS - FMD-2CONT SERVICE contSERVICE cont Auger Drive Motor Refer to FigBALLAST - FMD-1& FMD-2cont SERVICE contCONTROL BOARD - FMD-2ONLY SERVICE contCONTROL BOARD - FMD-2ONLY CONT SERVICE contSERVICE cont FIG.13 DISPENSE SWITCHCONTROL BOARD - FMD-2ONLY CONT FMD-1DISPENSE SWITCHS - FMD-1& FMD-2cont SERVICE contFAN - FMD-1& FMD-2 SERVICE contFMD-2 SERVICE contSERVICE cont 12.Slide the slinger 9 off of the motor shaftHOPPER DRIVE BOARD - FMD-1ONLY SERVICE contHOPPER DRIVE BOARD - FMD-1ONLY cont SERVICE contLAMP REPLACEMENT Refer to Fig SERVICE contLAMP REPLACEMENT Refer to Fig.24cont LAMP STARTER and SOCKET Refer to Fig. 24 LocationLEVEL CONTROL BOARD AND LEVEL PROBE - FMD-1ONLY SERVICE contSERVICE cont Test ProcedureRINSE/RUN SWITCH - FMD-1 FIG. 29 RINSE/RUN SWITCHFIG. 27 LIMIT THERMOSTAT LocationRINSE/RUN SWITCH - FMD-1CONT RINSE/RUN SWITCH - FMD-2SERVICE cont SOLENOID VALVE COLD WATER OPTIONALFMD-2ONLY SERVICE contSERVICE cont Test ProceduresLocation SOLENOID VALVE DISPENSE - FMD-1& FMD-2cont FIG. 37 INLET SOLENOID VALVESERVICE cont SOLENOID VALVE INLET - FMD-1& FMD-2cont FIG. 39 TANK HEATERSERVICE cont LocationTANK HEATER - FMD-1shown & FMD-2cont SERVICE contTRANSFORMER - FMD-2ONLY WHI/GRN - T7WHI/BLK - T12 SERVICE contSCHEMATIC WIRING DIAGRAM FMD-1 120 VOLTS A C - 2 WIRE120/208-240VOLTS AC - 3WIRE SINGLE PHASE SCHEMATIC WIRING DIAGRAM FMD-2 120/208-240VOLTS AC - 3 WIRE120 VOLTS AC - 2 WIRE SINGLE PHASE, 60 HZ