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®
BUNN
FMD-2
FMD-3
(prior to S/N FMD0013000)
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
www.bunnomatic.com
28364.0000D 08/02 ©1998 Bunn-O-Matic Corporation
PUSH and HOLD BUTTON UNTIL CUP IS 2/3 FULL, THEN RELEASE
! WARNING
HOT
LIQUID
RELEASE BUTTON WHEN CUP IS 2/3 FULL
PLACE PLACE PLACE
CUP HERE CUP HERE CUP HERE
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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. BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified below: 2 years parts and 1 year labor. 2) Ele
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USER NOTICES (cont.) 00656.0000 00831.0000 160° - + 190° HEATER TEMPERATURE ADJUSTMENT 26527.0002 THERMOSTAT ASSEMBLY BUNN-O-MATIC CORP ® 120VAC MECHANICAL THERMOSTAT ELECTRONIC THERMOSTAT 28368.0000 26536.0002 RELEASE BUTTON WHEN CUP IS 2/3 FULL PLACE PLACE CUP HERE CUP HERE FMD-2 FMD-3 28328.00003 28328.0000 28364 071598 3
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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. 3. Remove the water strainer assembly from the drip tray and set it aside. 4. Remove the four legs from the drip tray, apply non-skid pads to the bottom of the legs and securely install the legs in the dispenser base. ELECTRICAL REQUIREMENTS CAUTION - The dispenser must be disconnected from the power source until specified in
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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. Turn-on the water supply. INITIAL FILL & HEAT CAUTION - The dispenser must be disconnected from the power source throughout the initial fill & heat, except when specified in the instructions. 1. Turn-on the water supply and connect the dispenser to th
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DRAINING THE HOT WATER TANK CAUTION - The dispenser must be disconnected from the power source throughout these steps. 1. Disconnect the dispenser from the power source. 2. Open front door and place tank heater switch in the “OFF” (upper) position. 3. Shut-off and disconnect the incoming water supply. 4. Remove the top panel. 5. Gently remove one of the grommets from the tank lid. 6. Insert a tube to the bottom of the tank and syphon ALL of the water out. (Bunn-O-Matic has a syphon assembly #124
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TROUBLESHOOTING (cont.) REMEDY PROBLEM PROBABLE CAUSE Water lines and valves to the dis- Product will not dispense 1. No water penser must be open. (A1) Check for 120 volts across the 2. No power or incorrect voltage to black and white wires on two wire the dispenser 120 volt dispenser. (A2) Check for 120 volts across the red and white wires and the black and white wires on three wire 120/ 240 volt dispenser. (A3) Check for 240 volts across the white and black wires on two wire 240 volt dispe
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Product will not dispense (cont.) 9. Water strainer (A) Direction of flow arrow must be pointing towards dispenser. (B) Remove the strainer and check for obstructions. Clear or replace. 10. Lime build-up Inspect the tank assembly for exces- CAUTION - Tank and tank compo- sive lime deposits. Delime as re- nents should be delimed regularly quired. depending on local water conditions. Excessive mineral build-up on stain- less steel surfaces can
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TROUBLESHOOTING (cont.) REMEDY PROBLEM PROBABLE CAUSE Inspect the tank assembly for exces- Dripping from dispense tip 1. Lime build-up sive lime deposits. Delime as re- CAUTION - Tank and tank compo- quired. nents should be delimed regularly depending on local water conditions. Excessive mineral build-up on stain- less steel surfaces can initiate corro- sive reactions resulting in serious leaks. Remove the dispense solenoid valve 2. Dispense solenoid valve (Hot or and clear any obstructions. Reb
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TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE Weak product 1. Water temperature Place an empty container beneath the dispense tip. Initiate a dispense cycle and check the water tempera- ture immediately below the dispense tip with a thermometer. (A) Reading for mechanical thermo- stat models should be 180°F to 200°F (see thermostat temperature settings decal in USER NOTICES on page 3. (B) Reading for electronic thermo- stat should be185°F to 190°F. Adjust the control thermostat to in-
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TROUBLESHOOTING (CONT.) PROBLEM PROBABLE CAUSE REMEDY Dispenser is making unusual 1. Plumbing Lines Plumbing lines should not be rest- ing on the counter top. noises 2. Water Supply (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 3. Tank Heater heater. See page 32 Excess dust 1. Fan Ref
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AUGER DRIVE COMPONENTS 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. WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by qualified service personnel. The dispenser should be un- plugged when servicing, except when electrical tests are required and the test procedure spec
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SERVICE AUGER DRIVE COMPONENTS (CONT.) 1 4 2 4. Disconnect the dispenser from the power supply. 11 If voltage is present as described, proceed to #5. 6 3 If voltage is not present as described, refer to the wir- 5 ing diagrams and check the dispenser wiring harness. 13 5. With the wires removed from the motor to be tested. Check for continuity across the two ter- 7 minals on the bottom of the auger motor. 12 8 14 9 If continuity is present as described, reconnect the 10 wires to the terminals
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(17) to the rear of the auger motor mounting panel SERVICE (cont.) (15). AUGER DRIVE COMPONENTS (cont.) 4. Disconnect the wires from the auger motor (17) to be removed. 5. Remove auger motor mounting bracket (16), au- 14. Install hopper assy (21) in the dispenser by sliding ger motor (17) and dust seal (18) as an assembly. hopper assy in the guides on the hopper support 6. Remove dust seal (18) from auger motor (17). plate (20) until the slot in the bottom rear the 7. Remove the four #8-32 scr
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If voltage is not present as described, replace the SERVICE (cont.) ballast. BALLAST Removal and Replacement 1. Disconnect the wires from the ballast. 2. Remove the one #8-32 screw securing the bal- last to the component bracket. 3. Remove and discard ballast. 4. Install new ballast over the weld pin on the com- ponent bracket and secure with one #8-32 screw. 5. Refer to Fig. 5 when reconnecting the wires. BLK to Main Wiring Harness BLK to BLU from Door Interconnect Harness P1445 FIG. 4 BALLAS
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If voltage is present as described the control thermo- SERVICE (cont.) stat is operating properly. Reinstall bulb into the tank. CONTROL THERMOSTAT If voltage is not present as described, replace the ther- mostat. Electronic Thermostat (Optional) 1. Disconnect the dispenser from the power source. 2. Disconnect the black wire of the control thermo- stat from the black wire from the limit thermostat. 3. Remove temperature probe from the tank. 4. Check the voltage the black wire from the control th
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11. Refer to Fig. 7 and reconnect the wires. SERVICE (cont.) CONTROL THERMOSTAT (cont.) NOTE - The capillary tube must be clear of any electri- cal termination and not kinked. 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. TAN to WHI/BRN on Tank Heater Switch BLK to Main Wiring Harness WHI to Main Wiring Harness BLK from Limit Thermostat BLK from Tank Heater Switch BLK to Limit Thermastat MECH
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FAN SERVICE (cont.) DISPENSE SWITCH (cont.) 6. Check for continuity across the terminals on the dispense switch with the switch in the “ON” pressed position. Continuity must not be present when the switch is in the “OFF” released posi- tion. If continuity is present as described, reconnect the connector to the door interconnect wiring harness, the switch is operating properly. If continuity is not present as described, replace the switch. Removal and Replacement 1. Open the dispenser door. 2. Re
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SERVICE (cont.) 3. Press and hold the appropriate dispense switch FAN (cont.) and check the voltage across the disconnected 6. Reconnect the vacuum hose to the fan. harness wires with a voltmeter. Connect the dis- penser to the power source. The reading must BLK from Control Harness be: a) 120 volts ac for two wire 120 volt models. b) 120 volts ac for three wire 120/208 volt or 120/ 240 volt models. c) 240 volts ac for two wire 240 volt models. 4. Disconnect the dispenser from the power source.
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19. Wash remaining components in a mild solution of SERVICE (cont.) dish detergent using a bristle brush. FROTHER AND WHIPPER MOTOR (cont.) 20. Rinse thoroughly and allow to dry before reinstall- Removal, Cleaning and Replacement (Refer to Fig. 12): ing in the dispenser. 1. Open the dispenser door and raise the top front 21. Place teflon washer into back opening of whipper cover. chamber receptical and align one notch with bump 2. Lift the front edge of the each hopper assembly in the opening. o
