FMD Series Including: FMD-1,2,3,4,5 SERVICE & REPAIR MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 42672.
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY (Excluding regular maintenance items) Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor.
INTRODUCTION Safety first! To avoid electrical shock, unplug dispenser from power source before servicing inside. Basic Maintenance In order to maintain proper machine operation, a Preventative Maintenance schedule must be performed on a regular basis. The following procedures pretain to all versions in the FMD family of machines unless otherwise noted. CONTENTS Warranty....................................................................................................................................
CLEANING 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. Do NOT clean this equipment with a water jet device. 1 x 24h 1. Rinse out Whipper Chambers by placing RINSE/RUN switch in the "RINSE" position and activating DISPENSE switches. 2. Turn elbow up, remove Hoppers, refill with product and replace hoppers into dispenser. 3. Empty Drip Tray and wash in a solution of dish detergent. 7 1.
REQUIRED REGULAR MAINTENANCE: When performing Daily-Weekly Cleaning procedures, inspect o-rings, seals, and bushings for signs of wear or damage and replace immediately. Check and/or replace every 6 months or as required: 32906.0000 Mixing Chamber Kit (Includes items indented below) 25732.0000 Steam Collector 25733.0000 Mixing Chamber 25734.0000 Whipper Chamber 25736.0000 Dispense Tip 24733.0010 O-ring 25902.0000 Frother 26356.0000 Shaft Seal 28866.0000 Receptacle 25903.
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 high voltage ac and low voltage dc potential on their terminals.
TROUBLESHOOTING (cont.) PROBLEM Product will not dispense (cont.) PROBABLE CAUSE REMEDY 7. Level Control Board and Probe - Refer to Service - Level Control Board FMD-1 and Probe for testing procedures. See page 41 8. Control Board Refer to Service - Control Board and Probe for testing procedures. See page 20 9. Overflow Protection Switch Refer to Service - Overflow Protection Switch. See page 44 10. Auger Drive Refer to Service - Auger Drive. See page 14 11.
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 52 5. Heater Relay Refer to Service - Heater Relay for testing procedures. See page 51 6. Control Board Refer to Service - Control Board for testing procedures. See page 20 Spitting or excessive steaming 1. Lime build-up Inspect the tank assembly for exCAUTION - Tank and tank compo- cessive lime deposits.
TROUBLESHOOTING (cont.) PROBLEM Water flows into tank continuously (Cont.) Weak product PROBABLE CAUSE REMEDY 3. Overflow Protection Switch Refer to Service - Overflow Protection Switch. See page 44 4. Digital Touch Control Switch Refer to Service - Digital Touch Control Switch for testing procedures. See page 29 1. Water Temperature Place an empty container beneath the dispense tip. Initiate a dispense cycle and check the water temperature immediately below the dispense tip with a thermometer.
TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Product overflows container 1. Dispense Switch Refer to Service - Dispense Switch for testing procedures. See page 28 2. Dispense Solenoid Valve Remove the solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary. See page 47 1. Plumbing Lines Plumbing lines should not be resting on the counter top. 2.
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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 electrical equipment should be performed only by qualified service personnel.
SERVICE(cont.) ACCESS PANELS Location: All access panels are similar through the whole FMD family (FMD-5 shown). Before removing panels, make sure power is OFF to the machine and water is disconnected accept where indicated in testing procedures. Retain all screws and other attaching hardware for re-assembly. FMD-5 shown E AC E PL HER P CU FIG.
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 harness. AUGER DRIVE COMPONENTS (all Models) FMD-4 shown 5. Check the voltage across the positive (red wire) 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 to the power supply. After a .
SERVICE (cont.) Auger Drive Motor (Refer to Fig. 2) 1. Remove hopper assy (15), and set aside for reassembly. 2. Remove the four #8-32 screws securing the hopper 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 motor (17) to the rear of the auger motor mounting panel (19). 4.
SERVICE (cont.) AUGER DRIVE COMPONENTS Removal, Cleaning and Replacement Hopper & Auger (all other hoppers) 1. Open the dispenser door and raise the top front cover. 2. Lift the front edge of hopper assy (20) over the tab on hopper support plate (19) and slide hopper assembly out the front of the dispenser. 3. Remove hopper lid (1) and empty product. 4. Pull off the ejector elbow (13). 5.
SERVICE (cont.) AUXILLARY CONTROL BOARD (FMD DBC-3 only) 4. Back probe check the voltage across pins 2 (black wire) and 5 (white wire) of the six pin J2 connector on the wiring harness with a voltmeter. Connect the dispenser to the power source. The indication must be: a) 120 volts ac for two wire 120 volt models b) 120 volts ac for three wire 120/208 or 120/240 volt models c) 240 volts ac for two wire 240 volt models. d) 230 volts ac for two wire 230 volt models. 5.
SERVICE (cont.) AUXILLARY CONTROL BOARD (cont.) Removal and Replacement: 1. Loosen the two #8-32 screws securing the component mounting bracket to the dispenser housing. 2. Slide the component mounting bracket forward until the screw heads align with the large diameters of the keyhole openings. 3. Lift the component mounting bracket, and pull it through the lower access panel opening. 4. Disconnect the two plugs on the main wiring harness from the connectors on the auxiliary control board. 5.
SERVICE (cont.) BALLAST (all Models) FMD-4 shown Removal and Replacement 1. Loosen the three #8-32 screws securing the component bracket to the dispenser housing base. 2. Pull component bracket out the front of the dispenser 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.
SERVICE (cont.) CONTROL BOARD (FMD-2,-2FD,DBC-2FD,DBC-3) 4. With a voltmeter, back probe check the voltage across pins 2 & 4 of the six pin J2 connector on the wiring harness. Connect the dispenser to the power source. The indication must be: a) 120 volts ac for two wire 120 volt models b) 120 volts ac for three wire 120/208 volt models or three wire 120/240 volt models c) 240 volts ac for two wire 240 volt models. d) 230 volts ac for two wire 230 volt models. 5.
SERVICE (cont.) CONTROL BOARD (CONT.) 11. With a voltmeter check the voltage across the terminals of the inlet solenoid valve. Connect the dispenser to the power source. After a 10 second delay, the indication must be : a) 120 volts ac for two wire 120 volt models. b) 120 volts ac for three wire 120/208 or 120/240 volt models. c) 240 volts ac for two wire 240 volt models. d) 230 volts ac for two wire 230 volt models. 12. Move the probe’s flat end to the dispenser housing. The indication must be 0. 13.
SERVICE (cont.) CONTROL BOARD (cont.) If the voltage is present as described, the whipper motor and dispense solenoid control circuitry is operating properly. If the voltage is not present as described, replace the control circuit board. J1 J2 Removal and Replacement: 1. Disconnect the three plugs on the main wiring harness from the connectors on the control board. 2. Remove the four #6-32 keps nuts securing the control board to the component bracket. 3. Remove control board and discard. 4.
SERVICE (cont.) CONTROL BOARD (FMD-3,-4,-5) 5. Disconnect the dispenser from the power source. FMD-4 shown If voltage is present as described, proceed to step 6. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring harness. 6. Carefully connect a piece of insulated jumper wire to pin 10 (top right) of J2 on control board #1. Keep the other end of this wire away from any metal surfaces of the dispenser. 7.
SERVICE (cont.) CONTROL BOARD (CONT.) Tank Heater Relay Control Circuitry (Control Board #2) (120V dispensers only): 1. Disconnect the dispenser from the power source. 2. Back probe check the voltage across pins 5 & 6 of the six pin J3 connector on the wiring harness with a voltmeter. Connect the dispenser to the power source. the indication must be 24 volts ac. 3. disconnect the dispenser from the power source. 14. Move the probe’s flat end to the dispenser housing. The indication must be 0. 15.
SERVICE (cont.) CONTROL BOARD (CONT.) Removal and Replacement: 1. Disconnect the three plugs on the main wiring harness from the connectors on the control board. 2. Remove the four #6-32 keps nuts securing the control board to the component bracket. 3. Remove control board and discard. 4. Install new control board on the component bracket using four #6-32 keps nuts. 5. Reconnect the three plugs on the main harness to the connectors on the control board.
SERVICE (cont.) Electronic Thermostat (Optional): 1. Disconnect the dispenser from the power source. 2. Disconnect the black wire of the control thermostat from the black wire from the limit thermostat. 3. Remove temperature probe from the tank. 4. With a voltmeter, check the voltage across the black wire from the control thermostat and the white wire on the tank heater with the tank heater switch in the “ON” (lower) position. Connect the dispenser to the power source.
SERVICE (cont.) CONTROL THERMOSTAT (cont.) TAN to WHI/BRN in Main Wiring Harness BLK to Main Wiring Harness WHI to Main Wiring Harness BLK from Limit Thermostat BLK from Tank Heater Switch BLK to Main Wiring Harness ELECTRONIC THERMOSTAT MECHANICAL THERMOSTAT FIG.
SERVICE (cont.) DISPENSE SWITCHES (FMD-1,-2,-2FD,-3,-4,-5) If voltage is present as described, proceed to #7. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring harness. FMD-5 shown 7. Check for continuity across the terminals (top right to top left; bottom right to bottom left) of the dispense switch with the switch in the “ON” position. Continuity must not present when the switch is in the “OFF” released position. FIG.
SERVICE (cont.) DIGITAL TOUCH CONTROL SWITCH (FMD DBC-2,DBC-3) If voltage is present as described, proceed to step 7. If voltage is not present as described, refer to the wiring diagram and check the dispenser wiring harness. FMD DBC-3 shown 7. While pressing the appropriate switch, check for continuity across the following pins of the digital touch control switch assembly’s multi-pin connector: Note: Pin 1 of the connector is identified by an arrow embossed on the connector housing.
SERVICE (cont.) DIGITAL TOUCH CONTROL SWITCH (cont.) Removal and Replacement: 1. Open the dispenser door. 2. Remove the five #6-32 screws securing the bottom door cover and remove cover. 3. Disconnect the wires on the dispense switch to be removed from the door interconnect wiring harness. 4. From inside the door gently push the switch away from the door and discard. 5. Remove the paper from the adhesive backing on the switch and feed the ribbon cable on the back of switch through the slot in the door. 6.
SERVICE (cont.) EMI FILTER (230 Volt FMD DBC-3) Removal and Replacement: 1. Disconnect the wires from the EMI Filter. 2. Remove the two #8-32 screws and nuts securing the EMI Filter. 3. Remove and discard EMI Filter. 4. Install new EMI Filter using two #8-32 screws and nuts to secure EMI Filter to its former location. 5. Refer to schematic wiring diagrams when reconnecting the wires. FIG. 20 EMI FILTER Location: The EMI Filter is located on the rear of the dispenser base on FMD DBC-3. 118.0 kΩ - 118.
SERVICE (cont.) VACUUM FAN (all Models) FMD DBC-3 shown Removal and Replacement: 1. Disconnect the vacuum hose from the fan. 2. Remove the two #8-32 locking screws securing the fan to the dispenser housing base plate. 3. Disconnect the wires from the fan terminals and discard the fan 4. Refer to schematic wiring diagrams when reconnecting the wires. 5. Install new fan using two #8-32 locking screws. 6. Reconnect the vacuum hose to the fan. BLK from Main WiringHarness P4102.40 FIG.
SERVICE (cont.) FROTHER AND WHIPPER MOTOR (all Models except -2FD) FMD DBC-3 shown 11 12 13 1 2 P4102.40 FIG. 24 FROTHER AND WHIPPER MOTOR Location: The frothers are located behind the dispenser door, mounted on the whipper motor shaft inside the whipper chamber. The whipper motors are located on the back side of the whipper motor mounting panel. 10 9 8 7 6 5 4 3 FIG. 25 MIXING/WHIPPER CHAMBER COMPONENTS 1. 2. 3. 4. 5. 6. 7. Test Procedure: 1.
SERVICE (cont.) FROTHER AND WHIPPER MOTOR (cont.) 20. Install whipper chamber (4) on the whipper chamber receptacle (8) by twisting counterclockwise until the tabs on the whipper chamber (4) lock with the tabs on the whipper chamber receptacle (8). Be sure dispense port is pointing down. 21. Install dispense tip (3) into the bottom of the whipper chamber (4). 22.
SERVICE (cont.) HOPPER DRIVE BOARD - FMD-1 ONLY 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 harness. 5. Check the voltage across the positive (red wire) 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 to the power supply. After a .
SERVICE (cont.) HOPPER DRIVE BOARD - FMD-1 ONLY Removal and Replacement: (Refer to Fig. 27) 1. Remove hopper assy (17), and set aside for reassembly. 2. Remove the four #8-32 screws securing the hopper support plate (12), remove plate and set aside for reassembly. 3.
SERVICE (cont.) HOT/COLD SWITCH (Optional for FMD DBC-3) Removal and Replacement: 1. Remove all wires from the switch terminals. 2. Remove the mounting nut on the front of the whipper motor mounting panel. 3. Remove the hot/cold switch from the rear of the front panel and discard. 4. Reconnect the wires to the terminals on the rear of the new switch. 5. Push new hot/cold switch through the hole on the left side of the whipper motor mounting panel and secure with mounting nut. 6.
SERVICE (cont.) INCREASE/DECREASE SWITCH (FMD-2,-2FD,-3,-4,-5) Removal and Replacement: 1. Open the dispenser door. 2. Remove the facenut securing the increase/decrease switch to the whipper motor mounting panel. 3. Remove switch with wires attached from the back side of the whipper motor mounting panel. 4. Disconnect the wires from the switch and discard the switch. 5. Refer to schematic wiring diagrams when reconnecting the wires. 6.
SERVICE (cont.) LAMP HOLDER (all Models) Removal and Replacement: (Refer to Fig. 33) 1. Open dispenser door (1). 2. Remove the five #6-32 screws securing lower door panel (5) to the door (1) and remove cover. 3. Disconnect the door wiring harness from the door interconnect wiring harness. 4. Remove five #6-32 screws securing the upper door panel (4) to the door (1). 5. Remove the upper door cover (4), lamp (3), lamp holders (2) and door wiring harness as an assembly. 6.
SERVICE (cont.) Removal and Replacement (Refer to Fig. 33): 1. Open dispenser door assy (1) 2. Remove the five #6-32 screws securing the door lower panel (5) to the door assy (1). 3. Disconnect the leads on the starter socket from the door wiring harness. 4. Remove lower door panel (5) and starter w/socket (6) as assembly. 5. Compress the spring tabs on the socket and remove socket from the door bottom cover (5). 6. Rotate starter 90° and remove from the starter socket. 7.
SERVICE (cont.) LEVEL CONTROL BOARD AND LEVEL PROBE (FMD-1 only) 4. Disconnect the dispenser from the power source. 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. Keep the other end of this wire away from any metal surface of the dispenser. 7.
SERVICE (cont.) LEVEL CONTROL BOARD AND LEVEL PROBE (cont.) 13. Place the probe so that neither end is in contact with any metal surface of the dispenser. 14. Check the voltage across terminals 1 & 3 with a voltmeter. Connect the dispenser to the power source. The indication must 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) 230 volts ac for two wire 230 volt models, after a delay of approximately 5 seconds. 15.
SERVICE (cont.) LIMIT THERMOSTAT (all Models) If continuity is present as described, the limit thermostat is operating properly. If continuity is not present as described, replace the limit thermostat. FMD DBC-3 shown Removal and Replacement: 1. Remove all wires from the limit thermostat terminals. 2. Carefully slide the limit thermostat out from under the retaining clip and remove the limit thermostat. 3. Carefully slide the new limit thermostat into the retaining clip. 4.
SERVICE (cont.) OVERFLOW PROTECTION SWITCH (FMD-3,DBC-3-4,-5) FMD DBC-3 shown Removal and Replacement: 1. Disconnect the red leads from the overflow protection switch from the black wire and the blue wire from the main harness. 2. Remove the nut beneath the copper overflow cup. 3. Remove the entire switch assembly from the cup. 4. Place the new switch assembly into the cup, wires first. Make sure that a gasket is in place around the threaded switch stem.
SERVICE (cont.) RINSE /RUN SWITCH (all Models) Removal and Replacement: 1. Open the dispenser door. 2. Remove the facenut securing the run/rinse switch to the whipper motor mounting panel. 3. Remove switch with wires attached from the back side of the whipper motor mounting panel. 4. Disconnect the wires from the switch and discard the switch. 5. Refer to schematic wiring diagrams when reconnecting the wires. 6.
SERVICE (cont.) 7. Check the solenoid valve for coil action. Connect the dispenser to the power source. With “HOT/COLD” switch in the “COLD” (upper) position press the left dispense switch and listen carefully in the vicinity of the solenoid valve for a “clicking” sound as the coil magnet attracts. 8. Disconnect the dispenser from the power source.
SERVICE (cont.) 6. Check the solenoid valve for coil action. Connect the dispenser to the power source. With “RUN/RINSE” switch in the “RINSE” (upper) position press the appropriate dispense switch and listen carefully in the vicinity of the solenoid valve for a “clicking” sound as the coil magnet attracts. 7. Disconnect the dispenser from the power source.
SERVICE (cont.) HOT WATER DISPENSE SOLENOID VALVE (FMD-2FD,DBC-2FD,-3,DBC-3) 6. Check the solenoid valve for coil action. Connect FMD DBC-3 shown the dispenser to the power source. Listen carefully in the vicinity of the solenoid valve for a “clicking” sound as the coil magnet attracts. 7. Disconnect the dispenser from the power source.
SERVICE (cont.) If the sound is heard as described and water will not pass through the solenoid valve, there may be a blockage in the water line before the solenoid valve or, the solenoid valve may require inspection for wear, and removal of waterborne particles. If the sound is not heard as described, replace the solenoid valve. SOLENOID VALVE (INLET) (all Models) FMD DBC-3 shown FIG. 48 INLET SOLENOID VALVE Removal and Replacement: 1. Remove the two wires from the solenoid valve. 2.
SERVICE (cont.) 4. Disconnect the black wire and the white or red wire from the tank heater terminals. 5. Disconnect the pink wire from the liquid level probe. 6. Disconnect the green wire from the tank. 7. Remove the thermostat capillary bulb/temperature probe by firmly pulling up on the capillary at the tank lid. This will disengage the grommet from the tank lid. 8. Remove the ten #8-32 nuts securing the tank lid to the tank. 9.
SERVICE (cont.) TANK HEATER RELAY (FMD-4,-5,120V Dispensers only) 6. With an ohmmeter, check for continuity between the normally closed (NC-5) and common (COM-3) terminals of the relay. 7. Place containers below any three dispense nozzles. 8. Connect the dispenser to the power source. 9. Simultaneously initiate dispenses at each of the selected dispense stations while monitorintg continuity across the referenced terminals of the tank heater relay. The indication must be open circuit.
SERVICE (cont.) TANK HEATER SWITCH (all Models) Removal and Replacement: 1. Refer to the hopper section in this manual and remove the hopper assemblies and the hopper support plate. 2. Remove the switch mounting nut on the front of the front panel. 3. Remove switch with wires attached from the rear of the front panel. 4. Remove the wires from the switch terminals and discard switch. 5. Refer to schematic wiring diagrams when reconnecting the wires. 5.
SERVICE (cont.) TRANSFORMER (all Models) 5. Check the voltage between J1-1 and J1-2 on the eight pin connector at the control board. Connect the dispenser to the power source. The indication must be 24 volts ac. If voltage is present as described the transformer is operating properly. If voltage is not present as described, replace the transformer. FMD DBC-3 shown FIG. 56 TRANSFORMER Removal and Replacement: 1. Loosen the two #8-32 screws securing the component bracket to the dispenser housing base. 2.
TRIAC MAPS for FMD Q1 MOV1 Q2 MOV4 MOV2 Q5 MOV3 Q7 Bunn Part Number 28826.0006 Q1 & MOV1 Q2 & MOV3 Q5 & MOV4 Q7 & MOV2 controls controls controls controls Left Whipper Motor Center Whipper Motor Right Whipper Motor Refill Valve @ J2-6 @ J2-3 @ J2-1 @ J2-5 Q1 MOV1 Bunn Part Number 38739.0000 Q1 MOV1 Bunn Part Number 38739.
SCHEMATIC WIRING DIAGRAM FMD-1 GRN L2 L1 HEATER SWITCH BLK-16 CONTROL THERMOSTAT BLK-16 BLK-16 LIMIT THERMOSTAT BLK-16 TANK HEATER RED-16 (3-WIRE MODELS) WHI-16 (2-WIRE MODELS) BLK FAN BLK WHI/RED LIQUID LEVEL BOARD RED BLK GRN RED RED J1 GRN VIO BLK SOL RED WHI WHI WHI 1 2 3 WHI PROBE GRN HOPPER WHIPPER DISPENSE SOL 1 2 3 PNK 4 HOPPER DRIVE PCB RED WHI TANK INLET HOPPER SPEED ADJUST RUN/RINSE SWITCH N RED M BLK M WHI WHI RED BLK FLUORESCENT LAMP BALLAST BLK
SCHEMATIC WIRING DIAGRAM FMD-1A GRN L2 L1 HEATER SWITCH BLK-16 CONTROL THERMOSTAT BLK-16 BLK-16 LIMIT THERMOSTAT THERMAL FUSE BLK-16 THERMAL FUSE TANK HEATER WHI-16 BLK FAN BLK TANK INLET RED RED J1 WHI/RED LIQUID LEVEL BOARD RED BLK GRN HOPPER SPEED ADJUST RUN/RINSE SWITCH GRN VIO BLK SOL RED WHI WHI WHI 1 2 3 WHI PROBE GRN HOPPER WHIPPER DISPENSE SOL 1 2 3 PNK 4 HOPPER DRIVE PCB RED WHI RED M BLK M WHI WHI RED BLK FLUORESCENT LAMP BALLAST BLK BLU 1 RED
SCHEMATIC WIRING DIAGRAM FMD-2 GRN L1 TANK HEATER SWITCH CONTROL THERMOSTAT LIMIT THERMOSTAT BLK-16 BLK-16 L2 BLK-16 BLK-16 RED-16 (3-WIRE MODELS) WHI-16 (2-WIRE MODELS) TANK HEATER BLK-16 BLK BLK WHI WHI VIO J4-1 WHI 4 BLK WHI/BLK WHI/GRN WHI BLK J3-1 VIO WHI/BLK WHI/GRN WHI BLK J2-5 J2-10 SOL WHI BLK GRN BRN/BLK GRY YEL WHI/ORN WHI/YEL RED/BLK WHI/RED GRN GRN PNK J2-1 WHI WHI/BLK WHI/GRN WHI WHI/ORN WHI/RED GRN WHI/GRN WHI/BLK J3-6 WHI 120V : 24V AC TRANSFORMER 1 BL
SCHEMATIC WIRING DIAGRAM FMD-2A GRN L1 TANK HEATER SWITCH CONTROL THERMOSTAT THERMAL FUSE LIMIT THERMOSTAT BLK-16 BLK-16 L2 BLK-16 BLK-16 TANK HEATER BLK-16 BLK BLK WHI WHI VIO J4-1 WHI 4 BLK WHI/BLK WHI/GRN WHI BLK J3-1 VIO WHI/BLK WHI/GRN WHI BLK J2-5 J2-10 WHI SOL WHI BLK GRN BRN/BLK GRY YEL WHI/ORN WHI/YEL RED/BLK WHI/RED GRN GRN PNK J2-1 WHI WHI/BLK WHI/GRN WHI WHI/ORN WHI/RED GRN WHI/GRN WHI/BLK J3-6 FAN 240V : 24V AC TRANSFORMER 1 BLK WHI WHI BLK RINSE/PROG
SCHEMATIC WIRING DIAGRAM FMD DBC-2 FREEZE DRIED W/HOT WATER GRN HOT WATER WHI/VIO WHI SOL RIGHT HOPPER RIGHT DISPENSE ORN WHI SOL LEFT HOPPER LEFT DISPENSE RED WHI SOL 1 4 1 RED ORN WHI/RED WHI/ORN WHI/BLU GRY CHASSIS GRN GRN RED/BLK BRN/BLK BLK BLK GRN/BLK RED/WHI 41 4 SWITCH UNIT ASSY DOOR BLU WHI BLK FLUORESCENT LAMP BALLAST BLU WHI 1 1 WHI BLK RED BLU BLU BLK STARTER BLK BLK WHI CENTER LEFT RED BLU S M M D L G STOP S M M D L G HOT WATER 29096.
SCHEMATIC WIRING DIAGRAM FMD-2FD L1 L2 N GRN BLK-16 TANK HEATER SWITCH BLK-16 CONTROL THERMOSTAT LIMIT THERMOSTAT BLK-16 RED-16 (3-WIRE MODELS) WHI-16 (2-WIRE MODELS) TANK HEATER BLK-16 BLK BLK FAN WHI WHI J3-6 J2-5 J2-10 120V : 24V AC TRANSFORMER 4 WHI BLK GRY RUN YEL RINSE WHI/GRY RINSE/RUN SWITCH GRN BLK BLU BLK BLK WHI/GRY I N C FLUORESCENT LAMP BALLAST PROBE INCREASE/ DECREASE SWITCH D E C BRN/WHI DISP GRN PGM DISP BLK PGM BRN/BLK RED/BLK GRN DISPENSE/PROGRAM S
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RED L2 N WHI L1 GREEN BLK SCHEMATIC WIRING DIAGRAM FMD DBC-3 (WITH HOT WATER DISPENSE) BLK (2-WIRE MODELS) MAIN ON/OFF SWITCH (Late 3-wire Models only) BLK (3-WIRE MODELS) RED (3-WIRE MODELS) WHI (2-WIRE MODELS) 120 VOLTS AC 2 WIRE + GND or 120/208-240 VOLTS AC - 3 WIRE + GND SINGLE PHASE, 60 Hz 29218.
SCHEMATIC WIRING DIAGRAM FMDA DBC-3 (WITH HOT WATER DISPENSE) L1 L2 GRN/YEL TANK HEATER SWITCH LIMIT THERMOSTAT CONTROL THERMOSTAT BLK-16 BLK-16 BLK-16 TANK HEATER BLK-16 WHI BLU/BLK BLU/BLK BLK BLK WHI FAN WHI PNK J1-1 J1-5 J1-8 PROBE BLK WHI WHI/GRN 120V : 24V AC WHI/BLK TRANSFORMER BLK WHI WHI/GRN WHI/BLK WHI/GRN WHI/BLK PNK GRN WHI/ORN WHI/BLU WHI/RED GRN TANK INLET OVERFLOW SWITCH BLU GRN RED RED VIO WHI SOL N.C.
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SCHEMATIC WIRING DIAGRAM FMD-5A L1 L2 GRN TANK HEATER SWITCH BLK-16 CONTROL THERMOSTAT K BLK-16 LIMIT THERMOSTAT BLK-16 THERMAL FUSE WHI BRN/BLK WHI BLK THERMAL FUSE TANK HEATER BLK-16 BLK-16 WHI-16 K J4-1 J4-4 FAN BLK BLK BLK WHI VIO WHI WHI/VIO J4-1 C O N T R O L C I R C U I T B O A R D # 1 BLK J4-4 LAMP #1 BLK BALLAST RED RED BLK LAMP #2 BLK BALLAST WHI M BLK WHI/BLU WHI/YEL GRN WHI/GRN WHI/BLK WHI REFILL VALVE BLK LOAD 240V : 24V AC LINE TRANSFORMER WHI WHI/GRN WHI/BLK O
