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®
BUNN
FMD-4
FMD-5
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
35135.0000 03/03 ©2003 Bunn-O-Matic Corporation
RINSE RINSE
PUSH and HOLD BUTTON UNTIL CUP IS 2/3 FULL, THEN RELEASE
! WARNING
H O T
L I Q U I D
RELEASE BUTTON WHEN CUP IS 2/3 FULL
PLACE PLACE PLACE PLACE
CUP HERE CUP HERE CUP HERE CUP HERE
RINSE RINSE
PUSH and HOLD BUTTON UNTIL CUP IS 2/3 FULL, THE
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INTRODUCTION This equipment dispenses hot beverages or soups on demand from powdered product. 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) Electronic circuit and/or control boards: parts and labor for 3 years. 3) Compressors on refrigeration equipment: 5 years parts and 1 year labor. 4
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USER NOTICES (Cont.) 00656.0000 00831.0000 28368.0000 FMD-4 28964.0004 FMD-5 28964.0003 35135 012103 3
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INITIAL SET-UP 1. Locate the drip tray assembly inside the dispenser door. 2. Remove the drip tray and the drip tray cover and set them aside. ELECTRICAL REQUIREMENTS CAUTION - The dispenser must be disconnected from the power source until specified in Initial Set-Up. The 120 volt version of this dispenser has an attached cordset and requires 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. The mating connector must be a NEMA 5-15R. The 120/208 and the 120/240 versions
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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) 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 on the rear of the dispenser door for cleaning recommendations and proccedures. The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment. ADJUSTMENTS The beverage solenoid is preset to dispense a
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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. Place the tank heater switch in the “OFF” position. 3. Shut-off and disconnect the incoming water supply. 4. Remove the front, lower access panel. 5. Pull out drain tube to empty into a sink or a container with a minimum of 6-1/2 gallon capacity. 6. Make sure drain clamp is closed. Then, remove drain plug. 7. Direct tube into
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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.) PROBABLE CAUSE REMEDY PROBLEM 5. Solenoid Valve (Inlet) Refer to Service - Solenoid Valve Product will not dispense (cont.) (Inlet) for testing procedures. See page 37 6. Control Board #1 and Probe Refer to Service - Control Board and Probe for testing procedures. See page 20 7. Auger Drive Refer to Service - Auger Drive. See page 13 & 15 8. Water Strainer Remove the strainer and check for obstructions. Clear or replace. 9. Lime build-up Inspect the tank assembly for exc
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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 39 5. Relay (120V versions only) Refer to Service - Relay for testing procedures. See page 40 6. Control Board #2 (120V versions Refer to Service - Control Board #2 only) for testing procedures. See page 22 Spitting or excessive steaming 1. Lime build-up Inspect the tank assembly for exces- CAUTION - Tank and tank compo- si
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY 1. Dispense Switch Product overflows container Refer to Service - Dispense Switch for testing procedures. See page 23 2. Dispense Solenoid Valve Remove the solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary. See page 35 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.) PROBABLE CAUSE REMEDY PROBLEM 1. Plumbing Lines Plumbing lines should not be rest- Dispenser is making unusual 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 100 psi (690 kPa). Install a regulator if necessary to lower the working pressure to ap- proximately 50 psi (345 kPa). 3. Tank Heater Remove and clean lime off the tank heater. See page 38 1. Fan Refer to Serv
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AUGER DRIVE COMPONENTS FMD-4 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 procedur
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SERVICE AUGER DRIVE COMPONENTS - FMD-4 (CONT.) 5. Check the voltage across the positive (red wire) 1 terminal and the negative (black wire) terminal on the auger motor with a voltmeter. With the rinse/ 2 run switch in the run (lower) position press and hold the dispense switch. Connect the dispenser to the power supply. After a .6 second delay the 3 indication must be 4.0 to 24.5 volts dc. 4 6 5 If voltage is present as described, the auger motor 12 drive is operating properly. If auger does no
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AUGER DRIVE COMPONENTS - FMD-4 & FMD-5 SERVICE (cont.) AUGER DRIVE COMPONENTS - FMD-4 (cont.) Auger Drive Motor (Refer to Fig. 2) 1. Remove hopper assy (15), and set aside for reas- sembly. 2. Remove the four #8-32 screws securing the hop- per support plate (11), 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 (19), securing auger motor mounting bracket (16) and auger moto
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SERVICE (cont.) AUGER DRIVE COMPONENTS - FMD-4 & FMD-5 1 (cont.) 2 4. Disconnect the dispenser from the power supply. 4 If voltage is present as described and the auger does 3 5 not turn, replace the auger motor. 8 If voltage is not present as described, refer to the wir- ing diagrams and check the dispenser wiring harness. 7 9 Removal, Cleaning and Replacement 10 6 Hopper & Auger 1. Open the dispenser door and raise the top front cover. 2. Lift the front edge of hopper assy (20) over the tab on
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SERVICE (cont.) AUGER DRIVE COMPONENTS - FMD-4 & FMD-5 (cont.) STATIONS 1 - 5 Auger Drive Motor (Refer to Fig. 5) RED to BRN/WHI from Control Board #1 J3-3 1. Remove all hopper assemblies (20) and set aside for reassembly. RED to WHI/RED from 2. Remove the four #8-32 screws securing the hop- Control Board #1 J3-2 RED to WHI/ORN from per support plate (19), remove plate and set aside for reassembly. Control Board #1 J3-1 RED to WHI/YEL from 3. Remove the four #8-32 locking screws, located inside
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SERVICE (cont.) Removal and Replacement BALLASTS - FMD-4 & FMD-5 1. Loosen the three #8-32 screws securing the com- ponent bracket to the dispenser housing base. 2. Pull component bracket out the front of the dis- penser far enough so the leads on each ballast can be disconnected from the main wiring harness and the door interconnect harness. 3. Remove the two #8-32 screws securing each ballast to the rear of the component bracket. 4. Remove and discard the ballast. 5. Install new ballast on the
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SERVICE (cont.) Removal and Replacement. CONTROL THERMOSTAT - FMD-4 & FMD-5 1. Remove the thermostat capillary bulb by firmly pulling-up on the capillary at the tank lid. This will disengage the grommet from the tank lid. 2. Loosen the two #6-32 screws securing the ther- mostat to the front tank mounting bracket. 3. Disconnect the wires from the thermostat. 4. Remove thermostat and remove the screws and spacers from the thermostat. 5. Discard thermostat. 6. Install two spacers and two #6-32 scre
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SERVICE (cont.) CONTROL BOARD 5. Reconnect the six pin connector of the wiring harness to J3 of the control board. 6. Disconnect the four pin connector from J4 of control board #1. 7. Check the voltage across pins 1 & 4 of the four pin connector on the wiring harness with a voltmeter. Connect the dispenser to the power source. The indication must be 120 volts ac for two wire 120 volt models, three wire 120/208 volt models, three wire 120/240 volt models. 8. Disconnect the dispenser from the pow
