Bunn FMD-2 Manuel de service

OPERATING & SERVICE MANUALBUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227PHONE: (217) 529-6601 FAX: (217) 529-6644

10TROUBLESHOOTING (cont.)PROBLEMWeak productPROBABLE CAUSE1. Water temperature2. Whipper motor3. Frother4. Dispense solenoid valve(Hot or Cold)5. Auge

11TROUBLESHOOTING (CONT.)PROBLEMDispenser is making unusualnoisesExcess dustDisplay not litPROBABLE CAUSE1. Plumbing Lines2. Water Supply3. Tank Heate

12SERVICEThis section provides procedures for testing andreplacing various major components used in thisdispenser should service become necessary. Re

13SERVICEAUGER DRIVE COMPONENTS (CONT.)4. Disconnect the dispenser from the power supply.If voltage is present as described, proceed to #5.If voltage

14SERVICE (cont.)AUGER DRIVE COMPONENTS (cont.)14. Install hopper assy (21) in the dispenser by slidinghopper assy in the guides on the hopper suppo

15BLK to BLUfrom DoorInterconnectHarnessSERVICE (cont.)BALLASTFIG. 4 BALLASTLocationThe front door lamp ballast is located behindthe front access pane

16SERVICE (cont.)CONTROL THERMOSTATFIG. 6 CONTROL THERMOSTATLocationThe control thermostat (mechanical or elec-tronic) is located inside the dispenser

17FIG. 7 THERMOSTAT TERMINALSP1448BLK from LimitThermostatBLK from TankHeater Switch10. Carefully bend the capillary tube so that the tubeand bulb ins

18FANFIG. 10 FANP1436Location:The fan is located inside the dispenser hous-ing on the right rear of the dispenser base plate.Test Procedures:1. Disco

19SERVICE (cont.)3. Press and hold the appropriate dispense switchand check the voltage across the disconnectedharness wires with a voltmeter. Connec

2INTRODUCTIONThis equipment dispenses hot beverages on demand from powdered product. It has two or three hoppers. Thetwo and three hopper models may

20SERVICE (cont.)FROTHER AND WHIPPER MOTOR (cont.)Removal, Cleaning and Replacement (Refer to Fig. 12):1. Open the dispenser door and raise the top fr

21SERVICE (cont.)HOPPER DELAY BOARDFIG. 14 HOPPER DELAY BOARDP1445.40LocationThe hopper delay board is located behind thelower front access panel moun

22SERVICE (cont.)FIG. 15 HOT/COLD SWITCHP1452.40HOT/COLD SWITCH (Optional)Location:The hot/cold switch is located on the left sideof the whipper motor

23SERVICE (cont.)LAMP HOLDERFIG. 17 LAMP HOLDERSP1454.70Location:The lamp holders are located on the front ofthe upper panel behind the display panel.

24LEVEL CONTROL BOARD AND LEVEL PROBEFIG. 18 LEVEL CONTROL BOARD AND PROBELocation:The level control board is located behind thelower access panel mou

25SERVICE (cont.)If voltage is present as described, proceed to #5.If voltage is not present as described, refer to thewiring diagram and check the di

26SERVICE (cont.)LIMIT THERMOSTATFIG. 20 LIMIT THERMOSTATP1445Location:The limit thermostat is located in the center ofthe tank lid.Test Procedures:1.

27SERVICE (cont.)OVERFLOW PROTECTION SWITCHFIG. 22 OVERFLOW PROTECTION SWITCHP1199Location:The overflow protection switch is located in-side the coppe

28SERVICE (cont.)RINSE /RUN SWITCHFIG. 24 RINSE/RUN SWITCHP1452.40Location:The rinse/run switch is located on the rightside of the whipper motor mount

29SERVICE (cont.)SOLENOID VALVE (COLD WATER - OPTIONAL)FIG. 26 COLD WATER SOLENOID VALVEP1445.40Location:The cold water solenoid valve is located onth

300656.000000831.0000USER NOTICES (cont.)RELEASE BUTTON WHEN CUP IS 2/3 FULLPLACECUP HEREPLACECUP HEREFMD-228328.00003FMD-328328.0000HEATER26527.0002T

30SERVICE (cont.)SOLENOID VALVE (COLD WATER - OPTIONAL) (cont.)FIG. 27 COLD WATER SOLENOID TERMINALSP1215SOLENOID VALVES (DISPENSE)FIG. 28 DISPENSE SO

31SERVICE (cont.)SOLENOID VALVES (DISPENSE) (cont.)3. Drain enough water from the tank (approximately1.0 gallon) so the water level is below the dispe

32SERVICE (cont.)SOLENOID VALVE (INLET) (cont.)7. Disconnect the dispenser from the power source.If the sound is heard as described and water will not

33P1452.40SERVICE (cont.)TANK HEATER (cont.)5. Check for continuity across the tank heater termi-nals.If continuity is present as described, reconnect

34Test Procedure:1. Disconnect the dispenser from the power source.2. Disconnect the black wire from the power supplyand the black wire from the contr

35RED/WHIFLUORESCENTLAMPBALLASTSOLDISPENSEMWHIPPERMHOPPERRUN/RINSE SWITCHWHIWHI WHI REDWHI/REDWHIWHI/REDSOLLEFT DISPENSEMRIGHT WHIPPERMRIGHT HOPPERSOL

36RED/WHIFLUORESCENTLAMPBALLASTSOLDISPENSEMWHIPPERMHOPPERRUN/RINSE SWITCHWHIWHI WHI REDWHI/REDWHIWHI/REDSOLLEFT DISPENSEMRIGHT WHIPPERMRIGHT HOPPERSOL

4INITIAL SET-UP1. Locate the drip tray assembly beneath the dispenser nested in the packing material.2. Remove the drip tray and the drip tray cover

5PLUMBING HOOK-UP1. Securely attach the short piece of tubing on the water strainer assembly to the inlet fitting on the bottom ofthe dispenser.2. Flu

6DRAINING THE HOT WATER TANKCAUTION - The dispenser must be disconnected from the power source throughout these steps.1. Disconnect the dispenser from

7PROBLEMProduct will not dispensePROBABLE CAUSE1. No water2. No power or incorrect voltage tothe dispenser3. Dispense switch4. Dispense solenoid valve

8TROUBLESHOOTING (cont.)PROBLEMProduct will not dispense (cont.)Water is not hotSpitting or excessive steamingPROBABLE CAUSE9. Water strainer10. Lime

9TROUBLESHOOTING (cont.)PROBLEMDripping from dispense tipWater flows into tank continuouslyProduct overflows containerPROBABLE CAUSE1. Lime build-upCA