SYSTEM DBC ® BREWERS WITH SMART FUNNEL® SERVICE & REPAIR MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 41746.
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.
TABLE OF CONTENTS Warranty......................................................................................................................................2 Table of Contents.........................................................................................................................3 Troubleshooting...........................................................................................................................4 Service Tools.........................................................
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. • • • • • • • WARNING • • • • Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel. All electronic components have 120 - 240 volt ac and low voltage dc potential on their terminals.
TROUBLESHOOTING (cont.) Screen Displayed NO FUNNEL PRESENT TEMPERATURE TOO LOW CHECK FUNNEL FOR FRESH COFFEE Possible Cause Troubleshooting Procedures 1. SMART FUNNEL not fully inserted into the funnel rails. Position the funnel so that the sensor is directly beneath the sensor coil on the brewer. 2. Not using a SMART FUNNEL, and the FUNNEL DETECT function is activated (on). Disable the FUNNEL DETECT function. 1. Water temperature in the tank does not meet the SET READY TEMPERATURE.
TROUBLESHOOTING (cont.) Screen Displayed Possible Cause Troubleshooting Procedures BREW STOPPED! SERVER REMOVED? 1. Soft Heat Server was moved out of position after the brew cycle was started. To resume brewing, correctly position the Soft Heat Server and press BREW again. The brew cycle resumes from the point it was interrupted. TO FINISH: PRESS BREW OR Press ON/OFF to terminate the brew cycle. TO CANCEL PRESS ON/OFF BREW STOPPED! IS SWITCH OFF? 1.
TROUBLESHOOTING (cont.) Possible Cause Troubleshooting Procedures 1. Water shut off to brewer Check water supply shut-off 2. Inlet Solenoid Valve failure Service required. See REFILL VALVE. CHECK WATER SUPPLY 3. Control Board Failure Service required. See CONTROL BOARD. TEMP SENSOR OUT OF RANGE 1. Temperature Sensor Probe wire(s) broken or not making connection. Check wire and connection of both black and white wires of temperature probe. 1.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedure Equipment will not operate. 1. No power or incorrect voltage. Measure the voltage at the terminal block and confirm that it matches the voltage specified on the brewer data plate within +/- 10%. Brew cycle will not start. 1. No water Check plumbing and shut-off valves 2. ON/OFF switch Test the ON/OFF switch. Refer to the switch test procedures in SERVICE TOOLS section. 3. Brew switch Test the BREW switch.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedure Automatic refill will not operate or display shows FILL TIME TOO LONG (cont.) 3. Refill Probe or Sensitivity Setting Check the sensitivity setting. Refer to Refill function. If the left three digit number is less than the right number, the machine “thinks” it is full and the refill valve should be off. If the left number is larger than the right, then the refill valve will automatically be turned on to fill the tank.
TROUBLESHOOTING (cont.) Power Possible Cause Troubleshooting Procedures Water flows into tank continuously with power applied to brewer. 1. Refill Probe or Sensitivity Setting Check the sensitivity setting. Refer to Refill function. If the left three digit number is less than the right number, the machine “thinks” it is full and the refill valve should be off. If the left number is larger than the right, then the refill valve will automatically be turned on to fill the tank.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Water will not heat or display shows HEATING TIME TOO LONG (cont.) 3. Triac Remove power from the brewer. Connect a voltmeter across one of the tank heaters. Reapply power to the brewer and refer to Testing Individual Components. If the full supply voltage is measured when the tank heater is turned on, and zero voltage is measured with the triac off, then the triac is good.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Spitting or unusual steaming from sprayhead or air vents. (Water too hot) (cont.) 3. Electronic control board Perform the previous procedure for testing triacs. If the voltage measured is very low or zero, then substitute a control board known to be in good working order. Inconsistent beverage level in server. 1. Strainer/flow control (.750 GPM) (A) Direction of flow arrow must be pointing towards the brewer.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Consistently high or low beverage level in server. 1. Brew Volume adjustment Adjust the brew volume as required to achieve the recommended volume for each brew cycle. Dripping from sprayhead. 1. Brew Valve Repair or replace leaky valve. Water overflows filter. 1. Type of paper filters BUNN paper filters should be used for proper extraction. 2. No sprayhead Check sprayhead 1.
TROUBLESHOOTING (cont.) Problem Possible Cause Troubleshooting Procedures Weak beverage (cont.) 6. Incorrect Recipe Consider adjusting bypass percentage, preinfusion, or pulse brew. Contact Bunn-O-Matic for suggestions. Brewer is making unusual noises. 1. Solenoid (Inlet) The nut on back of the solenoid must be tight or it will vibrate during operation 2. Plumbing lines Plumbing lines should not be resting on the counter top. 3. Water Supply (A) The brewer must be connected to a cold water line.
TROUBLESHOOTING (cont.) SERVICE TOOLS This function allows the testing of individual components and the ability to check switches for proper function. This function also tests the Soft Heat server's status on the brewer (in place or removed), and the funnel sensor coil's frequency (diagnostic tool for troubleshooting purposes only). Testing individual components (outputs): This will allow the operator to test the operation of individual components and outputs of the brewer.
TROUBLESHOOTING (cont.) SERVICE TOOLS (cont.
TROUBLESHOOTING (cont.) SERVICE TOOLS (cont.) to TEST SWITCHES?. Press and release switch again to advance to TEST SERVERS?. Another alternative is to press and release the ON/OFF switch (either on DUAL brewers) located on the front switch panel. This will exit TEST SWITCHES and return to the MAIN SCREEN. NOTE: The tank heater will automatically turn off if left on too long. 26. After testing the tank heater, press NEXT to advance to the next test. 27. The HEATER CONTACTOR is used only on certain models.
TROUBLESHOOTING (cont.) SERVICE TOOLS (cont.) 3. Press and hold the upper right hidden switch until the display reads UNITS. Release the switch. Continue pressing and releasing the upper right hidden switch until SERVICE TOOLS appears. 4. Pressing NO will exit this function and advance to the next function screen. Press YES to run tests on various components and outputs within the brewer. 5. The display should read TEST OUTPUTS?. 6. In TEST OUTPUTS screen, press NO.
CONPONENT ACCESS This section provides procedures for testing and replacing various major components used in this brewer 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.
CONPONENT ACCESS (cont) 4. Remove any adhesive that remains on the hood. 5. Remove the adhesive backing from the new membrane switch. Insert the ribbon cable through the slot in the hood and apply the membrane switch to the front of the hood. 6. Reconnect the ribbon cable to the 20-pin connector on the control board making sure every pin on the control board is inserted into the ribbon cable connector.
CONPONENT ACCESS (cont) If the polarity of meter leads are reversed, reading will indicate -170VDC. (Double these readings for 240 volt coils) DISPENSE & BYPASS VALVES If voltage is present as described, but no coil action is observed, valve is defective. Replace valve and test again to verify repair. If voltage is not present as described, refer to Wiring Diagrams and check the brewer wiring harness. Also check the control board and switch for proper operation.
CONPONENT ACCESS (cont) REFILL VALVE FIG 4 REFILL VALVE (DUAL SH DBC Models) FIG 6 REFILL VALVE (DUAL TF DBC Early Models) FIG 5 REFILL VALVE (SINGLE SH DBC Models) FIG 7 REFILL VALVE (DUAL TF DBC Late Models) Page 22 41746 112008
CONPONENT ACCESS (cont) REFILL VALVE (cont) If voltage is not present, refer to Wiring Diagrams and check main wiring harness. If harness checks ok, replace control board. 4. Check the refill valve for coil action. Briefly activate the refill valve in the test mode and listen carefully near the refill valve for a"clicking" sound as the magnetic coil pulls the plunger in.
CONPONENT ACCESS (cont) TANK HEATERS Location: The tank heaters (Fig 9) are located inside the tank, secured to the tank lid. Tank Heaters Test Procedures: 1. With a voltmeter, check voltage across the white wire (120V Models) or red wire (120/208 and 120/240V Models) and blue wire on the top of the tank heaters. Connect brewer to the power source.
CONPONENT ACCESS (cont) TEMPERATURE PROBE Removal and Replacement: 1. Disconnect the brewer from the power source. 2. Refer to instructions included in Temperature Probe Kit #29327.0000 to replace Temperature Probe. LIMIT THERMOSTAT Temperature Probe Limit Thermostats FIG 10 TEMPERATURE PROBE Location: The temperature probe (Fig 10) is inserted into a grommet in the tank lid assembly. Test Procedures: 1. Disconnect the brewer from the power source. 2.
CONPONENT ACCESS (cont) WARMER ELEMENTS (GPR MODELS) Removal and Replacement: 1. Remove the three #4-40 screws securing the warmer assembly to the brewer. 2. Lift the warmer assembly from the brewer. 3. Disconnect the two wires from the warmer element terminals. 4. Remove the two #8-32 nuts securing the warmer element to the warmer plate. 5. Securely install new warmer element. 6. Reconnect the two wires to warmer element terminals. 7. Securely install warmer assembly on the brewer.
CONPONENT ACCESS (cont) MASTER POWER SWITCH FIG 13 MASTER POWER SWITCH Location: The main power switch (FIG 13) is located under the brewer in the base just behind the right front leg on SH and GPR models and behind the front support leg on TF models. Test Procedure: 1. Disconnect the brewer from the power source. 2. Disconnect the wires from the power switch. With the switch in the ON position, check for continuity between terminals opposite each other.
WHI BLK GRN L2 RED L1 N SCHEMATIC WIRING DIAGRAM SINGLE® SH with SMART FUNNEL® (DBC) LIMIT THERMOSTAT BLK-14 BLK-14 MT 1 BLU -14 MT2 BLK-14 BLK-14 BLK-14 RED-14 RED-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY TANK HEATER TRIAC SWITCH UNIT ASSY SHIELD FUNNEL SENSOR VIO WHI/VIO VIO SOL WHI/GRN CONTROL PC BOARD GRY WHI/VIO WHI WATER LEVEL PROBE TEMP PROBE SOL SOL BREW RED TAN YEL BLK PNK BLK BLK WHI/RED WHI REFILL BYPASS RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE SH DBC (W/SMART FUNNEL) L1 L2 GRN/YEL BLK RED EMI FILTER RED BLK LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 THERMAL SAFETY FUSE THERMAL SAFETY FUSE RED TANK HEATER BLK TOUCH SWITCH ASSMBLE L2 L1 L4 L3 C1 C2 D1 C3 D2 A1 VIO D3 A2 SOL B1 WHI REFILL WHI/GRN GRY WHI/VIO B2 SOL SOL BREW RED TAN YEL BLK BYPASS WHI RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE SH DBC (W/SMART FUNNEL) L1 L2 GRN/YEL BLK RED EMI FILTER RED BLK LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 THERMAL SAFETY FUSE THERMAL SAFETY FUSE RED TANK HEATER BLK TOUCH SWITCH ASSMBLE L2 L1 L4 L3 C1 C2 D1 C3 D2 A1 VIO D3 A2 SOL B1 WHI REFILL WHI/GRN GRY WHI/VIO B2 SOL SOL BREW RED TAN YEL BLK BYPASS WHI RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE® SH with SMART FUNNEL® (DBC) L1 B L K N TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT 1 BLU -14 MT2 WHI-14 W H I TANK HEATER SWITCH UNIT ASSY SHIELD FUNNEL SENSOR VIO WHI/VIO VIO SOL WHI/GRN CONTROL PC BOARD GRY WHI/VIO WHI WATER LEVEL PROBE TEMP PROBE SOL SOL BREW RED TAN YEL BLK PNK BLK BLK WHI/RED WHI REFILL BYPASS RED N.C.
BLK WHI L1 N GRN L2 RED SCHEMATIC WIRING DIAGRAM SINGLE SH DBC with SMART FUNNEL (With Audible Alarm) BLK-14 BLK-14 BLK-14 RED-14 RED-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT 1 BLU -14 MT2 TANK HEATER SWITCH UNIT ASSY AUDIBLE ALARM (FRESHNESS) SHIELD WHI FUNNEL SENSOR BLK VIO WHI/VIO VIO SOL WHI/GRN CONTROL PC BOARD WHI TEMP PROBE SOL SOL BREW RED TAN YEL BLK PNK BLK WATER LEVEL PROBE GRY WHI/VIO BLK WHI/RED WHI REFILL BYPAS
SCHEMATIC WIRING DIAGRAM SINGLE SH DBC (W/SMART FUNNEL) L1 L2 RED BLK GRN MAIN ON/OFF SWITCH ONLY (Late Models only) RED-14 RED-14 RED-14 BLK-14 BLK-14 BLK-14 LIMIT THERMOSTAT BLK-14 TRIAC BLK-14 MT 1 BLU -14 MT2 RED TANK HEATER BLK TOUCH SWITCH ASSMBLE L2 L1 L4 L3 C1 C2 D1 C3 D2 A1 VIO D3 A2 SOL B1 WHI REFILL WHI/GRN GRY WHI/VIO B2 SOL SOL BREW RED TAN YEL BLK BYPASS WHI RED RED N.C.
SCHEMATIC WIRING DIAGRAM DUAL SH with SMART FUNNEL (DBC) WHI RED GRN BLK L1 N L2 BLK-14 BLK-14 RED-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY BLK-14 RED-14 RED-14 RED-14 120/208 OR 120/240 VOLT A.C. + GND SINGLE PHASE 29876.0000D 01/07 © 2001 BUNN-O-MATIC CORPORATION White Strip-Tac Plus Black Ink Finished Size: 8.5" x 11.
SCHEMATIC WIRING DIAGRAM DUAL SH DBC (W/SMART FUNNEL) L1 L2 GRN/YEL BLK RED EMI FILTER RED BLK TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 THERMAL SAFETY FUSE MT1 BLU-14 MT2 BLK-14 LEFT MT1 BLU-14 MT2 RED TANK HEATER THERMAL SAFETY FUSE TRIAC BLK-14 THERMAL SAFETY FUSE RIGHT THERMAL SAFETY FUSE RED TANK HEATER TOUCH SWITCH ASSEMBLY L2 L1 L4 L5 L6 L7 L8 L3 C1 C2 SHEILD 1 D1 C3 D2 A1 D3 A2 B1 A3 B2 A4 C4 C5 C6 20 J4-19 J9-1 WHI/VIO J4-15 VIO J4-10 J4-1 LEF
SCHEMATIC WIRING DIAGRAM DUAL SH DBC (W/SMART FUNNEL) L1 L2 GRN/YEL BLK RED EMI FILTER RED BLK TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 THERMAL SAFETY FUSE MT1 BLK-14 LEFT MT1 BLU-14 MT2 RED TANK HEATER THERMAL SAFETY FUSE TRIAC BLK-14 THERMAL SAFETY FUSE RIGHT BLU-14 MT2 THERMAL SAFETY FUSE RED TANK HEATER TOUCH SWITCH ASSEMBLY L2 L1 L4 L5 L6 L7 L8 L3 C1 C2 SHEILD 1 D1 C3 D2 A1 D3 A2 B1 A3 B2 A4 C4 C5 C6 20 WHI/VIO J4-19 J9-1 J4-15 VIO J4-10 J4-1 LEF
BLK WHI L1 N GRN L2 RED SCHEMATIC WIRING DIAGRAM SINGLE GPR DBC-DV with SMART FUNNEL TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 BLK-14 BLK-14 RED-14 RED-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY BLK-14 VOLTAGE SELECTOR SWITCH 120V Only WHI MT 1 BLU -14 WHI/VIO TANK HEATER #2 BLK RED-14 TANK HEATER #1 120V-208/240V 20922-0004 120V 3235W LIMIT SWITCH UNIT ASSY 20922-0001 120V 1650W HEATER #2 HEATER #1 SHIELD TANK LID ASSEMBLY FUNNEL SENSOR VIO WHI/VIO VIO SOL WHI/GRN CONTRO
BLK WHI L1 N GRN L2 RED SCHEMATIC WIRING DIAGRAM DUAL GPR with SMART FUNNEL (DBC) BLK-14 BLK-14 BLK-14 RED-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY RED-14 RED-14 RED-14 WHI J4-19 SOL J4-15 J4-10 J9-1 J4-5 J4-1 SOL SOL WHI WHI SOL J11-1 WHI SOL WHI J11-5 J9-5 WHI J2-1 CONTROL PC BOARD J11-10 PNK BLK J2-5 WHI TEMP PROBE GRN SOL J2-10 J11-18 L. FUNNEL LOCK SOL OPTIONAL R. FUNNEL LOCK WHI/RED WHI/VIO 120/208 OR 120/240 VOLT A.C.
BLK WHI L1 N GRN L2 RED SCHEMATIC WIRING DIAGRAM SINGLE TF DBC BLK-14 BLK-14 RED-14 RED-14 RED-14 TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY BLK-14 TANK HEATER SWITCH UNIT ASSEMBLY REFILL SOL WHI BYPASS FUNNEL SENSOR VIO WHI SOL WHI/VIO BREW VIO SOL WHI WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC L1 BLK-14 L2 RED-14 BLK-14 RED-14 GRN TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 TANK HEATER RED-14 SWITCH UNIT ASSEMBLY REFILL RED SOL BYPASS FUNNEL SENSOR RED SOL VIO WHI/VIO BREW VIO RED SOL WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC L1 N TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 TANK HEATER WHI-14 SWITCH UNIT ASSEMBLY REFILL WHI SOL BYPASS FUNNEL SENSOR WHI SOL VIO WHI/VIO BREW VIO WHI SOL WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC L1 L2 RED BLK GRN MAIN ON/OFF SWITCH (Late Models only) RED-14 RED-14 RED-14 BLK-14 BLK-14 BLK-14 TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 MT2 MT 1 BLU-14 TANK HEATER RED-14 SWITCH UNIT ASSEMBLY REFILL SOL FUNNEL SENSOR RED BYPASS VIO RED SOL WHI/VIO BREW VIO SOL RED WHI/GRN GRY WHI CONTROL PC BOARD TAN YEL BLK PNK BLK WATER LEVEL PROBE RED RED N.C.
SCHEMATIC WIRING DIAGRAM SINGLE TF DBC, CE 3 PHASE W/NEUTRAL L1 L2 L3 N L2 BLU RED L1 GRN BRN TERMINAL BLOCK BLK Wire as shown for 3 phase. For single phase operation, move red wire in terminal block into cell with black wire; apply power across L1 & N. L3 N - LINE N - LOAD L2 L3 4 BLU BLK BRN 2 HEATER #2 HEATER #3 LIMIT TANK LID ASEMBLY RED BLK 1 3 2 EMI FILTER L1 HEATER #1 1 2.
N BLK WHI L1 GRN L2 RED SCHEMATIC WIRING DIAGRAM DUAL TF DBC BREWWISE BLK-14 RED-14 WHI MODELS WITH MAIN ON/OFF SWITCH ONLY BLK-14 BLK-14 RED-14 RED-14 TRIAC LIMIT THERMOSTAT BLK-14 MT 1 BLU-14 MT2 BLK-14 RIGHT TANK HEATER TRIAC LIMIT THERMOSTAT BLK-14 BLK-14 LEFT MT 1 BLU-14 MT2 RED-14 TANK HEATER 20 VIO J4-19 J4-15 J4-10 J4-5 J4-1 J9-1 WHI/VIO J11-1 WHI/GRN ORA J9-5 WHI J2-1 R. BYPASS WHI WHI R. BREW SOL SOL RED CONTROL PC BOARD J11-10 PNK BLK J2-5 WHI L.
BLK L3 L2 N BLU L1 GRN/YEL RED SCHEMATIC WIRING DIAGRAM DUAL TF DBC BREWWISE MAIN ON/OFF SWITCH (Late Models only) BLK-14 RED-14 BLU-14 BLK-14 BLK-14 RIGHT LIMIT THERMOSTAT LEFT LIMIT THERMOSTAT RED-14 BLK-14 RIGHT TANK HEATER BLK-14 N.O. MT1 BLU-14 CENTER TANK HEATER BLU-14 BLU-14 CENTER LIMIT THERMOSTAT BLK-14 RED-14 RED-14 BLU-14 BLU-14 BLU-14 LEFT TANK HEATER TRIAC MT2 BLK-14 BLK-14 RED-14 BLU-14 N.O.
SCHEMATIC WIRING DIAGRAM DUAL TF DBC BREWWISE L2 GRN/YEL L1 RED BLK BLK RED EMI FILTER RED BLK BLK RIGHT LIMIT THERMOSTAT (1/2) BLK-14 RED TRIAC MT2 BLK-14 MT1 BLU-14 RIGHT LIMIT THERMOSTAT (1/2) RIGHT RED-14 TANK HEATER LEFT LIMIT THERMOSTAT (1/2) BLK-14 TRIAC LEFT LIMIT THERMOSTAT (1/2) LEFT MT 1 BLU-14 MT2 BLK-14 R E D 1 4 RED-14 TANK HEATER 20 VIO SOL J4-19 J4-15 J4-5 J4-1 J9-1 WHI/VIO J4-10 WHI/ORA LEFT FUNNEL SENSOR VIO J11-1 RIGHT FUNNEL SENSOR YEL WHI/GRN OR
SCHEMATIC WIRING DIAGRAM DUAL TF DBC BREWWISE L1 L2 RED BLK GRN MAIN ON/OFF SWITCH ONLY (Late Models only) BLK-14 RED-14 RED-14 BLK-14 BLK-14 LIMIT THERMOSTAT BLK-14 TRIAC MT2 BLK-14 MT1 BLU-14 RIGHT R E D 1 4 RED-14 TANK HEATER BLK-14 LIMIT THERMOSTAT TRIAC LEFT MT 1 BLU-14 MT2 BLK-14 RED-14 TANK HEATER 20 VIO SOL J4-19 J4-15 J4-5 J4-1 J9-1 WHI/VIO J4-10 WHI/ORA LEFT FUNNEL SENSOR VIO J11-1 RIGHT FUNNEL SENSOR YEL WHI/GRN ORA SOL SOL L. BYPASS RED R.
SCHEMATIC WIRING DIAGRAM DUAL TF DBC, CE 3 PHASE W/NEUTRAL L1 Wire as shown for 3 phase. For single phase operation, move red wire in terminal block into cell with black wire; apply power across L1 & N.
