Bunn FMD-1 User Manual

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

10Product overflows containerWeak product1. Dispense switch2. Dispense solenoid valve1. Water temperature2. Whipper motor3. Frother4. Dispense solenoi

11Dispenser is making unusual noisesExcess dustDisplay not lit1. Plumbing Lines2. Water Supply3. Tank Heater1. Fan2. Hopper Delay Board1. Lamp2. Lamp

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

13SERVICEAUGER DRIVE COMPONENTS (CONT.)5. With the wires removed from the motor . Checkfor continuity across the two terminals on thebottom of the aug

14SERVICE (cont.)AUGER DRIVE COMPONENTS (cont.)Auger Drive Motor (Refer to Fig. 2)1. Remove hopper assy (18), and set aside for reas-sembly.2. Remove

155. Disconnect the dispenser from the power source.If voltage is present as described the control thermo-stat is operating properly. Reinstall bulb i

16SERVICE (cont.)DISPENSE SWITCHLocation:The dispense switch is located on the loweroutside center of the dispenser door.Test Procedure:1. Disconnect

17SERVICE (cont.)FANFIG. 10 FANLocation:The fan is located inside the dispenser hous-ing on the right rear of the dispenser base plate.Test Procedure

18SERVICE (cont.)FROTHER AND WHIPPER MOTORFIG. 12 FROTHER AND WHIPPER MOTORLocation:The frother is located behind the dispenserdoor, mounted on the f

19SERVICE (cont.)FROTHER AND WHIPPER MOTOR (cont.)4. Disconnect vacuum hose (16) from fan baffle(17).5. Remove the steam collector (1) by pulling it f

2INTRODUCTIONThis equipment dispenses hot beverages on demand from powered product. It is for indoor use only on a sturdycounter or shelf.WARRANTYBun

20SERVICE (cont.)HOPPER DELAY BOARDFIG. 14 HOPPER DELAY BOARDLocationThe hopper delay board is located behind thelower front access panel mounted in t

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22LEVEL CONTROL BOARD AND LEVEL PROBEFIG. 16 LEVEL CONTROL BOARD AND PROBELocation:The level control board is located behind thelower access panel mou

23SERVICE (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

24Test Procedures:1. Disconnect the dispenser from the power source.2. Disconnect both black wires from the limit ther-mostat.3. Check for continuity

25SERVICE (cont.)Removal and Replacement:1. Disconnect the red leads from the overflow pro-tection switch from the black wire from the mainharness and

26SOLENOID VALVE (DISPENSE)FIG. 24 DISPENSE SOLENOID VALVELocation:The dispense solenoid is located on the upperleft center of the tank.Test Procedure

27for two wire 120 volt models, three wire 120/208and 120/240 volt models.4. Disconnect the dispenser from the power source,If voltage is present as d

28TANK HEATERFIG. 28 TANK HEATERLocation:The tank heater is located inside the tank andsecured to the tank lid.Test Procedure:1. Disconnect the dispen

29SERVICE (cont.)14. Refer to Fig. 29 when reconnecting the wires to thetank heater.TANK HEATER (cont.)FIG. 29 TANK HEATER TERMINALSP1218FIG. 30 TANK

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30RED/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

7TROUBLESHOOTINGA troubleshooting guide is provided to suggest probable causes and remedies for the most likely problemsencountered. If the problem r

8Product will not dispense (cont.)Water is not hot5. Solenoid valve (inlet)6. Level control board and probe7. Overflow protection switch8. Auger drive

9Water is not hot (Cont.)Spitting or excessive steamingDripping from dispense tipWater flows into tank continuously4. Tank heater switch1. Lime build-