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 F AX: (217) 529-6644 29170.
2 INTRODUCTION This equipment dispenses hot beverages or soup on demand from powdered product. It has three hoppers. This equipment may also dispense cold beverages from powdered product from the left dispense station. It is for indoor use only on a sturdy counter or shelf.
3 00656.0000 00831.0000 28301.0003 This equipment must be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).
4 INITIAL SET -UP 1. Locate the drip tray assembly above the dispenser nested in the packing material. 2. Remove the drip tray and the drip tray cover and set them aside.
5 INITIAL FILL & HEA T CAUTION - The dispenser must be disconnected from the power sour ce throughout the initial fill & heat, except when specified in the instructions. 1. Turn on the water supply and connect the dispenser to the power source.
6 COLD BEVERAGE SET -UP (OPTIONAL) Cold beverages may be dispensed from the left dispense position. Simply place the HOT/COLD switch near the left whipper chamber in the “COLD” (upper) position. CLEANING Refer to the decal inside the hopper access door for cleaning recommendations and procedures.
7 4. Press and hold the dispense switch of the appropriate chamber for 5 seconds. The hopper motor will run for 10 seconds at the programmed speed. 5. Remove the cup and weigh the dispensed product. To calculate the throw rate (g/s or oz./s), divide the total weight of the dispensed product by 10.
8 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. Control Board 7. Overflow Protection Switch 8. Auger Drive REMEDY Water lines and valves to the dis- penser must be open.
9 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.
10 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.
11 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 9. Rinse Timer REMEDY Place an empty container beneath the dispense tip.
12 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.Control Board 1. Lamp 2. Lamp Holder 3. Starter - Lamp 4. Ballast REMEDY Plumbing lines should not be rest- ing on the counter top.
13 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.
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SERVICE AUGER DRIVE COMPONENTS (CONT .) P2210.30 12 13 14 11 15 16 Late Models 1. Hopper Lid 2. Agitator Disk Assy 3. Auger Drive Shaft Bushing 4. Mixing Blade 5. Auger Drive Shaft 6. Auger Drive Bracket 7. Locknut 8. Hopper 9. Auger Wire 10. Ejector Elbow 11.
16 SERVICE (cont.) Auger Drive Motor (Refer to Fig. 2 & 3): 1. Remove all hopper assemblies (20,17) and set aside for reassembly. 2. Remove the four #8-32 screws securing the hop- per support plate (19,16), remove plate and set aside for reassembly.
17 BLK to BLU from Door Interconnect Harness SERVICE (cont.) BALLAST FIG. 5 BALLAST Location: The front door lamp ballast is located behind the front access panel on the left side of the component bracket. T est Procedure: 1. Disconnect the dispenser from the power source.
18 SERVICE (cont.) J4 J1 J2 J3 CONTROL BOARD FIG. 7 CONTROL BOARD Location: The Control Board is located behind the lower front access cover mounted on the component bracket. Test Procedure: Liquid Level Control Circuitry: 1. Disconnect the dispenser from the power source.
19 J4 J2 J3 J1 J1 J4 J2 J3 FIG. 8 CONTROL BOARD CONNECTORS P1640 17. Gently pull the liquid level probe out of the tank lid and inspect for corrosion. Replace it if necessary. 18. Place the probe so that neither end is in contact with any metal surface of the dispenser.
20 SERVICE (cont.) CONTROL THERMOST A T FIG. 9 CONTROL THERMOST A T Location: The control thermostat (mechanical or electronic) 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 source.
21 BU N N OFF HI BU N N OFF HI HEATER 26527.0002 THERMOSTAT ASSEMBLY BUNN-O-MATIC CORP TEMPERATURE ADJUSTMENT + - 160 ° 120VAC ® 190 ° FIG. 10 THERMOST A T TERMINALS P1448 BLK from Limit Thermostat BLK from Tank Heater Switch SERVICE (cont.) CONTROL THERMOST A T (cont.
22 P1449 FIG. 12 DISPENSE SWITCH TERMINALS LEFT CENTER RIGHT BLK RED/BLK BLK RED/WHI BLK RED ORN BLU/WHI ORN BLK/WHI ORN BLU/BLK DISPENSE SWITCH P1631 SERVICE (cont.) Location: The dispense switches are located on the lower outside of the dispenser door .
23 FA N FIG. 13 F AN P1436 Location: The fan is located inside the dispenser housing on the right rear of the dispenser base plate. T est Procedures: 1. Disconnect the dispenser from the power sour ce. 2. Disconnect the black and white wires from the fan terminals.
24.
25 SERVICE (cont.) FROTHER AND WHIPPER MOTOR (cont.) 29170 091598 ward and at the same time twisting it clockwise. 6. Pull the mixing chamber (2) out of the whipper chamber (4). 7. Remove the two #4-40 screws securing the fan baffle(13) to the whipper motor mouting panel and remove fan baffle.
26 SERVICE (cont.) FIG. 18 HOT/COLD SWITCH P1642.40 HOT/COLD SWITCH (Optional) Location: The hot/cold switch is located on the left side of the whipper motor mounting panel.
27 SERVICE (cont.) INCREASE/DECREASE SWITCH FIG. 20 INCREASE/DECREASE SWITCH P1642.40 Location: The increase/decrease switch is located on the lower left front of the whipper motor mounting panel. T est Procedure: 1. Disconnect the dispenser from the power source.
28 SERVICE (cont.) LAMP HOLDER FIG. 22 LAMP HOLDERS P1643.70 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.
29 SERVICE (cont.) LAMP ST AR TER and SOCKET Location: The lamp starter (6) is located inside the door assy (1) on the top of the door lower panel (5). T est Procedures: 1. Disconnect the dispenser from the power source. 2. Disconnect the starter leads from the door wiring harness.
30 FIG. 24 LIMIT THERMOST A T TERMINALS P1800 BLK to Control Thermostat BLK to Tank Heater.
31.
32 SERVICE (cont.) RINSE /RUN SWITCH FIG. 27 RINSE/RUN SWITCH P1452.40 Location: The rinse/run switch is located on the lower right side of the whipper motor mounting panel.
33 SOLENOID V AL VE (COLD W A TER - OPTIONAL) FIG. 29 COLD WA TER SOLENOID V AL VE P1637.40 Location: The cold water solenoid valve is located on the left side of the dispenser base just behind the compo- nent bracket. Test Procedures: 1. Disconnect the dispenser from the power source.
34 FIG. 32 DISPENSE SOLENOID V AL VE TERMINALS P1645 LEFT CENTER RIGHT TAN to Main Harness WHI to Main Harness ORN to Main Harness WHI to Main Harness WHI/VIO to Main Harness WHI to Main Harness SERVICE (cont.) SOLENOID V AL VES (DISPENSE) FIG. 31 DISPENSE SOLENOID V AL VES P1637.
35 J4 J1 J2 J3.
36 SERVICE (cont.) T ANK HEA TER FIG. 35 T ANK HEA TER P1637.40 Location: The tank heater is located inside the tank and se- cured to the tank lid. Test Procedure: 1.
37 SERVICE (cont.) TANK HEATER (cont.) FIG. 36 T ANK HEA TER TERMINALS P1218 WHI or RED to Main Wiring Harness BLK to Limit Thermostat 29170 080900.
38 SERVICE (cont.) FIG. 38 T ANK HEA TER SWITCH TERMINALS P1208 BLK from Main Harness (Mechanical Thermostat) WHI/BRN from Main Harness (Electronic Thermostat) BLK from Main Harness (Mechanical Thermostat) WHI/BRN from Main Harness (Electronic Thermostat) 29170 091598 P1642.
39 SERVICE (cont.) If voltage is not present as described, refer to the Wiring Diagrams and check the main wiring harness. 5. Check the voltage between J3-5 and J3-6 on the six pin connector at the control board. Connect the dispenser to the power source.
40 29170 091598.
41 GRN GRN GRN GRN WHI WHI WHI WHI WHI WHI SOL LEFT DISPENSE M RIGHT WHIPPER M RIGHT HOPPER SOL RIGHT DISPENSE M LEFT WHIPPER M LEFT HOPPER M CENTER HOPPER M CENTER WHIPPER SOL CENTER DISPENSE BLK BLK.
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
