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®
BUNN
FMD-1
FMD-2
S/N FMD0013000-UP
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
29112.0000 5/00 ©1998 Bunn-O-Matic Corporation
PUSH and HOLD BUTTON UNTIL CUP
PUSH and HOLD BUTTON UNTIL CUP
IS 2/3 FULL, THEN RELEASE
IS 2/3 FULL, THEN RELEASE
RELEASE BUTTON WHEN CUP IS 2/3 FULL 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 or soups on demand from powered product. It is for indoor use only on a sturdy counter or shelf. WARRANTY Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation. In addition: 1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects
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USER NOTICES (Cont.) 00656.0000 00831.0000 27096.0000 FMD-1 ONLY 28368.0001 PUSH and HOLD BUTTON UNTIL CUP PUSH and HOLD BUTTON UNTIL CUP IS 2/3 FULL, THEN RELEASE IS 2/3 FULL, THEN RELEASE 28964.0000 28964.0001 29112 101598 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 packaging material, 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 speci
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INITIAL FILL & HEAT CAUTION - The dispenser must be disconnected from the power source throughout the initial set-up, except when specified in the instructions. 1. Turn-on the water supply and connect the dispenser to the power source. 2. Water will automatically flow into the tank to the proper level and then shut-off. This will take less than five minutes. 3. When the tank is full of water, open the front door and place the heater switch in the “ON” (lower) position. A tank full of cold water
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COLD BEVERAGE SET-UP (OPTIONAL FMD-2 ONLY) Cold beverages may be dispensed from the left dispense position as follows: 1. Disconnect the dispenser from the power source. 2. Remove the lower front access panel. 3. Locate the Hot/Cold jumper connection near the whipper panel in the main wiring harness. 4. Remove the Hot jumper connection (red jumper plug) from the main wiring harness and connect the Cold jumper connection (blue jumper plug) to the main harness. 5. Replace the lower front access pa
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4. Return the rinse/run switch to the run position after hopper motor speed adjustments are complete. 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 tu
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TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel. • All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the appl
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY 5. Solenoid Valve (Inlet) Refer to Service - Solenoid Valve Product will not dispense (cont.) (Inlet) for testing procedures. See page 35 6. A) Level Control Board and Probe Refer to Service - Level Control Board - FMD-1 and Probe for testing procedures. See page 29 B) Control Board and Probe - FMD- Refer to Service - Control Board and 2 Probe for testing procedures. See page 19 7. A) Auger Drive - FMD-1 Refer to Service - Auger Drive. S
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water is not hot (Cont.) 4. Tank Heater Switch Refer to Service - Tank Heater Switch for testing procedures. See page 37 Spitting or excessive steaming 1. 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 initiate corro- sive reactions res
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TROUBLESHOOTING (cont.) PROBLEM REMEDY PROBABLE CAUSE Product overflows container 1. Dispense Switch Refer to Service - Dispense Switch for testing procedures. See page 21 Remove the solenoid valve and clear 2. Dispense Solenoid Valve any obstructions. Rebuild or replace the valve if necessary. See page 34 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 the
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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 36 1. Fan Refer to Servi
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AUGER DRIVE COMPONENTS FMD-1 SERVICE This section provides procedures for testing and replacing various major components used in this dispenser should service become necessary. Re- fer to Troubleshooting for assistance in determin- ing the cause of any problem. WARNING - Inspection, testing, and repair of electri- cal equipment should be performed only by quali- fied service personnel. The dispenser should be unplugged when servicing, except when electrical tests are required and the test proc
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SERVICE AUGER DRIVE COMPONENTS - FMD-1 (CONT.) 1 5. Check the voltage across the positive (red wire) 2 terminal and the negative (black wire) terminal on the auger motor with a voltmeter. With the rinse/ run switch in the run (lower) position press and hold the dispense switch. Connect the dispenser 3 to the power supply. After a .6 second delay the 4 6 indication must be 4.0 to 24.5 volts dc. 5 7 13 If voltage is present as described, the auger motor 14 drive is operating properly. If auger do
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12 11 9 8 7 AUGER DRIVE COMPONENTS - FMD-2 SERVICE (cont.) AUGER DRIVE COMPONENTS - FMD-1 (cont.) Auger Drive Motor (Refer to Fig. 2) 1. Remove hopper assy (17), and set aside for reas- sembly. 2. Remove the four #8-32 screws securing the hop- per support plate (12), remove plate and set aside for reassembly. 3. Remove the four #8-32 screws, located inside the dispenser housing on the lower right front of the auger motor mounting panel (21), securing auger motor mounting bracket (18) and auger
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SERVICE (cont.) AUGER DRIVE COMPONENTS - FMD-2 (CONT.) 1 4 2 4. Disconnect the dispenser from the power supply. 11 If voltage is present as described and the auger does 6 not turn, replace the auger motor. 3 If voltage is not present as described, refer to the wir- 5 ing diagrams and check the dispenser wiring harness. 7 Removal, Cleaning and Replacement Hopper & Auger 12 8 1. Open the dispenser door and raise the top front 13 9 cover. 10 2. Lift the front edge of hopper assy (20) over the t
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12 11 9 8 7 SERVICE (cont.) LEFT AUGER DRIVE COMPONENTS - FMD-2 (cont.) RIGHT Auger Drive Motor (Refer to Fig. 5) 1. Remove all hopper assemblies (20) and set aside for reassembly. 2. Remove the four #8-32 screws securing the hop- per support plate (19), remove plate and set aside for reassembly. 3. Remove the four #8-32 locking screws, located inside the dispenser housing on the front of the RED to WHI/ORN from auger motor mounting panel (14), securing auger Control Board J3-2 motor mounting b
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tighten the two #8-32 screws securing the compo- SERVICE (cont.) nent bracket to the dispenser housing base. BALLAST - FMD-1 & FMD-2 (cont.) Location FMD-1 BLK to BLK The front door lamp ballast is located behind from Main the front access panel on the left front side of the com- Wiring Harness ponent bracket. BLK to BLU from FMD-2 Main Harness The front door lamp ballast is located behind the front access panel on the left rear side of the com- ponent bracket. P1447 FIG. 8 BALLAST TERMINALS CON
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12 11 9 8 7 CONTROL BOARD - FMD-2 ONLY SERVICE (cont.) CONTROL THERMOSTAT - FMD-1 & FMD-2 (cont.) a) 120 volts ac for two wire 120 volt models. b) 208 volts ac for three wire 120/208 volt models. c) 240 volts ac for three wire 120/240 volt models. 5. Disconnect the dispenser from the power source. If voltage is present as described the control thermo- stat is operating properly. Reinstall bulb into the tank. If voltage is not present as described, replace the thermostat. Removal and Replacement
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SERVICE (cont.) 16. Reconnect the ten pin connector of the wiring harness to J2 of the control board. CONTROL BOARD - FMD-2 ONLY (CONT.) 17. Gently pull the liquid level probe out of the tank lid and inspect for corrosion. Replace it if necessary. 6. Disconnect the four pin connector from J4 of the 18. Place the probe so that neither end is in contact control board. with any metal surface of the dispenser. 7. Check the voltage across pins 1 & 4 of the four pin 19. Check the voltage across the
