Instruction/ maintenance manual of the product FMD-3 Bunn
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OPERA TING & SERVICE MANUAL BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www .
2 INTRODUCTION This equipment dispenses hot beverages on demand from powdered product. It has two or three hoppers. The two and three hopper models may also dispense cold beverages from powdered product from their left dispense station. It is for indoor use only on a sturdy counter or shelf.
3 00656.0000 00831.0000 USER NOTICES (cont.) RELEASE BUTTON WHEN CUP IS 2/3 FULL PLACE CUP HERE PLACE CUP HERE FMD-2 28328.00003 FMD-3 28328.0000 HEATER 26527.0002 THERMOSTAT ASSEMBLY BUNN-O-MATIC CORP TEMPERATURE ADJUSTMENT + - 160 ° 120VAC ® 190 ° MECHANICAL THERMOSTAT 28368.
4 INITIAL SET -UP 1. Locate the drip tray assembly beneath the dispenser nested in the packing material. 2. Remove the drip tray and the drip tray cover and set them aside.
5 PLUMBING HOOK-UP 1. Securely attach the short piece of tubing on the water strainer assembly to the inlet fitting on the bottom of the dispenser . 2. Flush the water line and securely attach it to the flare fitting on the water strainer assembly . 3.
6 DRAINING THE HOT W A TER T ANK CAUTION - The dispenser must be disconnected from the power sour ce throughout these steps. 1. Disconnect the dispenser from the power sour ce. 2. Open front door and place tank heater switch in the “OFF” (upper) position.
7 PROBLEM Product will not dispense PROBABLE CAUSE 1. No water 2. No power or incorrect voltage to the dispenser 3. Dispense switch 4. Dispense solenoid valve (Hot or Cold) 5. Solenoid valve (Inlet) 6. Level control board and probe 7. Overflow protection switch 8.
8 TROUBLESHOOTING (cont.) PROBLEM Product will not dispense (cont.) Water is not hot Spitting or excessive steaming PROBABLE CAUSE 9. Water strainer 10. Lime build-up CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water conditions.
9 TROUBLESHOOTING (cont.) PROBLEM Dripping from dispense tip Water flows into tank continuously Product overflows container PROBABLE CAUSE 1. Lime build-up CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water conditions.
10 TROUBLESHOOTING (cont.) PROBLEM Weak product PROBABLE CAUSE 1. Water temperature 2. Whipper motor 3. Frother 4. Dispense solenoid valve (Hot or Cold) 5. Auger drive 6. Auger spring 7. Auger motor 8. Rinse/Run switch REMEDY Place an empty container beneath the dispense tip.
11 TROUBLESHOOTING (CONT .) PROBLEM Dispenser is making unusual noises Excess dust Display not lit PROBABLE CAUSE 1. Plumbing Lines 2. Water Supply 3. Tank Heater 1. Fan 2. Hopper Delay Board 1. Lamp 2. Lamp Holder 3. Starter - Lamp 4. Ballast REMEDY Plumbing lines should not be rest- ing on the counter top.
12 SERVICE This section provides procedures for testing and replacing various major components used in this dispenser should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem.
13 SERVICE AUGER DRIVE COMPONENTS (CONT .) 4. Disconnect the dispenser from the power supply. If voltage is present as described, proceed to #5. If voltage is not present as described, refer to the wir - ing diagrams and check the dispenser wiring harness.
14 SERVICE (cont.) AUGER DRIVE COMPONENTS (cont.) 14. Install hopper assy (21) in the dispenser by sliding hopper assy in the guides on the hopper support plate (20) until the slot in the bottom rear the hopper seats against the shoulder screw (19) in the hopper support plate.
15 BLK to BLU from Door Inter connect Harness SERVICE (cont.) BALLAST FIG. 4 BALLAST Location The front door lamp ballast is located behind the front access panel on the left side of the compo- nent bracket. T est Procedure 1. Disconnect the dispenser from the power source.
16 SERVICE (cont.) CONTROL THERMOST A T FIG. 6 CONTROL THERMOST A T Location The control thermostat (mechanical or elec- tronic) is located inside the dispenser on the upper left side of the housing. T est Procedure Mechanical Thermostat 1. Disconnect the dispenser from the power sour ce.
17 FIG. 7 THERMOST A T TERMINALS P1448 BLK from Limit Thermostat BLK from Tank Heater Switch 10. Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical position and away from any electrical connections. SERVICE (cont.
18 FA N FIG. 10 F AN P1436 Location: The fan is located inside the dispenser hous- ing on the right rear of the dispenser base plate. T est Procedures: 1. Disconnect the dispenser from the power source. 2. Disconnect the black and white wires from the fan terminals.
19 SERVICE (cont.) 3. Press and hold the appropriate dispense switch and check the voltage across the disconnected harness wires with a voltmeter . Connect the dis- penser to the power sour ce. The reading must be: a) 120 volts ac for two wire 120 volt models.
20 SERVICE (cont.) FROTHER AND WHIPPER MOTOR (cont.) Removal, Cleaning and Replacement (Refer to Fig. 12): 1. Open the dispenser door and raise the top front cover . 2. Lift the front edge of the each hopper assembly over the tab on the hopper support panel and slide each hopper assembly out the front of the dispenser .
21 SERVICE (cont.) HOPPER DELA Y BOARD FIG. 14 HOPPER DELA Y BOARD P1445.40 Location The hopper delay board is located behind the lower front access panel mounted in the center of the component bracket. T est Procedures: 1. Disconnect the dispenser from the power source.
22 SERVICE (cont.) FIG. 15 HOT/COLD SWITCH P1452.40 HOT/COLD SWITCH (Optional) Location: The hot/cold switch is located on the left side of the whipper motor mounting panel.
23 SERVICE (cont.) LAMP HOLDER FIG. 17 LAMP HOLDERS P1454.70 Location: The lamp holders are located on the front of the upper panel behind the display panel. T est Procedure: 1. Disconnect the dispenser from the power source. 2. Remove upper door panel (4) and disconnect the door wiring harness from the leads on the lamp holders.
24 LEVEL CONTROL BOARD AND LEVEL PROBE FIG. 18 LEVEL CONTROL BOARD AND PROBE Location: The level control board is located behind the lower access panel mounted on the right side of the component bracket. The Level probe is located on the left center of the tank lid just in front of the overflow tube.
25 SERVICE (cont.) If voltage is present as described, proceed to #5. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring haness. 5. Reconnect the violet wire to terminal 1. 6. Carefully connect a piece of insulated jumper wire to terminal 4.
26 SERVICE (cont.) LIMIT THERMOST A T FIG. 20 LIMIT THERMOST A T P1445 Location: The limit thermostat is located in the center of the tank lid. T est Procedures: 1. Disconnect the dispenser from the power sour ce. 2. Disconnect both black wires from the limit ther - mostat.
27 SERVICE (cont.) OVERFLOW PROTECTION SWITCH FIG. 22 OVERFLOW PROTECTION SWITCH P1199 Location: The overflow protection switch is located in- side the copper overflow cup on the left side of the tank. T est Procedures: 1. Disconnect the dispenser from the power source.
28 SERVICE (cont.) RINSE /RUN SWITCH FIG. 24 RINSE/RUN SWITCH P1452.40 Location: The rinse/run switch is located on the right side of the whipper motor mounting panel.
29 SERVICE (cont.) SOLENOID V AL VE (COLD WA TER - OPTIONAL) FIG. 26 COLD WA TER SOLENOID V AL VE P1445.40 Location: The cold water solenoid valve is located on the left side of the dispenser base just behind the com- ponent bracket. Test Procedures: 1.
30 SERVICE (cont.) SOLENOID V AL VE (COLD WA TER - OPTIONAL) (cont.) FIG. 27 COLD W A TER SOLENOID TERMINALS P1215 SOLENOID V AL VES (DISPENSE) FIG. 28 DISPENSE SOLENOID V AL VES P1445.40 Location: The dispense solenoids are located on the upper left side of the tank.
31 SERVICE (cont.) SOLENOID VALVES (DISPENSE) (cont.) 3. Drain enough water from the tank (approximately 1.0 gallon) so the water level is below the dispense valve mounting hole. NOTE: Bunn-O-Matic has a syphon assembly, #12440.0000. available for this purpose.
32 SERVICE (cont.) SOLENOID V AL VE (INLET) (cont.) 7. Disconnect the dispenser from the power sour ce. If the sound is heard as described and water will not pass through the solenoid valve, there may.
33 P1452.40 SERVICE (cont.) TANK HEATER (cont.) 5. Check for continuity across the tank heater termi- nals. If continuity is present as described, reconnect the wires, the tank heater is operating properly. If continuity is not present as described, replace the tank heater.
34 Test Procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect the black wire from the power supply and the black wire from the control thermostat. 3. With the switch in the “ON” lower position check for continuity between the center and the upper terminal.
35 RED/WHI FLUORESCENT LAMP BALLAST SOL DISPENSE M WHIPPER M HOPPER RUN/RINSE SWITCH WHI WHI WHI RED WHI/RED WHI WHI/RED SOL LEFT DISPENSE M RIGHT WHIPPER M RIGHT HOPPER SOL RIGHT DISPENSE M LEFT WHIP.
36 RED/WHI FLUORESCENT LAMP BALLAST SOL DISPENSE M WHIPPER M HOPPER RUN/RINSE SWITCH WHI WHI WHI RED WHI/RED WHI WHI/RED SOL LEFT DISPENSE M RIGHT WHIPPER M RIGHT HOPPER SOL RIGHT DISPENSE M LEFT WHIP.
An important point after buying a device Bunn FMD-3 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bunn FMD-3 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bunn FMD-3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn FMD-3 you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn FMD-3 will certainly help you make a decision on the purchase.
If you already are a holder of Bunn FMD-3, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bunn FMD-3.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn FMD-3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn FMD-3 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
