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INTRODUCTION This equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It is only for indoor use 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 defe
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USER NOTICES Carefully read and follow all notices in this manual and on the equipment. All labels on the equipment should be kept in good condition. Replace any unreadable or damaged labels. #00658.0000 #00831.0000 POUR IN WATER ONLY To reduce the risk of electric shock, #00833.0000 do not remove or open cover. No user-serviceable parts inside. Authorized service personnel only. Disconnect power before servicing. #37881.0000 #12364.0000 10053 011405 Page 3
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ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. The brewer has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. “A" models require 2-wire, grounded service rated 220 - 240 volts ac, 20 amp, single phase, 50 Hz. Proceed as follows: Electrical Hook-Up (Model "A" Only) CAUTION – Improper electrical installation will damage electronic components. 1. An electrician must
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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. • This brewer is heated at all times. Keep away from combustibles. WARNING – • Exercise extreme caution when servicing electric
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY 1. Lime Build-up Dripping from sprayhead CAUTION - Tank and tank Inspect the tank assembly for excessive lime deposits. Delime components should be delimed as required. regularly depending on local water conditions. Excessive mineral build-up on stainless steel surfaces can initiate corro- sive reactions resulting in serious leaks. 1. Dispenser Beverage overflows dispenser The dispenser must be com- pletely empty before starting a brew cycle.
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY ® Dry coffee grounds remain in 1. Funnel Loading The BUNN paper filter must be the funnel centered in the funnel and the bed of grounds leveled by gently shak- ing. Brewer is making unusal noises 1. Tank Heater Remove and clean lime off the tank heater. See page 12 Cool beverage serving tempera- 1. ON/OFF Warmer Switch Refer to Service - ON/OFF ture Warmer Switch for testing procedures. See page 11 2. Warmer Element(s) Refer to Service - Warm
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SERVICE (cont.) "ON" (fully counterclockwise for thermostat with tee handle control or fully clockwise for thermo- CONTROL THERMOSTAT stats with control knob). Plug-in the brewer to the power source. The indication must be: a) 120 volts ac for two wire 120 volt models. b) 220 volts ac for two wire 220 volt models. Voltage must not be present across these terminals when the thermostat is turned "OFF" (fully counter- clockwise). 8. Disconnect the brewer from the power source. If voltage is presen
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SERVICE (cont.) Test Procedures: 1. Disconnect the brewer from the power source. CONTROL THERMOSTAT (cont.) 2. Disconnect the blue/black and black wires from the limit thermostat. 2. Remove the thermostat capillary bulb by firmly pulling-up on the capillary at the tank lid. This will 3. Check for continuity across the limit thermostat terminals with an ohmmeter. disengage the grommet from the tank lid. 3. Remove the two #8-32 screws securing the con- If continuity is present as described, the li
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b) 220 volts ac for two wire 220 volt models. SERVICE (cont.) 4. Disconnect the brewer from the power source. ON/OFF WARMER SWITCH If voltage is present as described, proceed to #5. If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness. 5. Remove both wires from the switch and check for continuity across the terminals with the switch in the "ON" position. Continuity must not be present when the switch is in the "OFF" position. If continuity
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SERVICE (cont.) If continuity is present as described, reconnect the wires, the tank heater is operating properly. TANK HEATER If continuity is not present as described, replace the tank heater. NOTE- If the tank heater remains unable to heat, remove and inspect heater for cracks in the sheath. Removal and Replacement: 1. Remove the tank inlet fitting securing the fill basin to the tank lid, remove fill basin and tank inlet gasket. Set all three parts aside for reassem- bly. 2. Disconnect the b
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HI SERVICE (cont.) TANK HEATER (Cont.) Location: The thermal cut-outs are located inside the hood connected to the tank heater terminals. BLK to Limit Thermostat (120V Models) Thermal Cut-off to Blu/BLK Lead From Test Procedures: Control Thermostat (220V Two Wire 1. Disconnect the brewer from the power source. Models) 2. Disconnect the thermal cut-off from the tank heater and the red wire from the power connec- WHI to WHI Lead on tor. Power Cord (120V Models) Thermal Cut-off to Red 3. Check for
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SERVICE (cont.) 5. Remove both wires from the warmer element and check the continuity across the two terminals on WARMER ELEMENTS the warmer element. If continuity is present as described, reconnect the wires on the warmer element. If continuity is not present as described, replace the warmer element. 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 ele- m
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SCHEMATIC WIRING DIAGRAM VPR (Models without Lighted switches) GREEN L1 N LIMIT SW. & THERMOSTAT THERMOSTAT 1320W BLK BLU/BLK WHI BLK TANK HEATER 50W WHI WHI "KEEP WARM" HEATER IND ON/OFF WHI WHI/RED SWITCH 100W WHI/RED WHI BLK IND LOWER WARMER ON/OFF WHI VIO SWITCH 100W WHI BLK VIO UPPER WARMER 120 VOLTS A C 2 WIRE 10050.0000D 1/97 © 1988 BUNN-O-MATIC CORPORATION SINGLE PHASE 60 HZ SCHEMATIC WIRING DIAGRAM VPR (Models with Lighted switches) GREEN L1 N LIMIT SW. & THERMOSTAT THERMOSTAT
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SCHEMATIC WIRING DIAGRAM VPS (Models without Lighted switches) GREEN L1 N LIMIT SW. & THERMOSTAT THERMOSTAT 1320W BLK BLU/BLK BLK WHI TANK HEATER 50W WHI WHI "KEEP WARM" HEATER IND ON/OFF WHI/RED WHI SWITCH 100W BLK WHI/RED WHI IND LOWER LEFT WARMER ON/OFF VIO WHI SWITCH 100W BLK VIO WHI IND UPPER WARMER ON/OFF BRN/BLK WHI SWITCH 100W BLK BRN/BLK WHI LOWER RIGHT WARMER 120 VOLTS A C 2 WIRE 10049.0000C 1/97 © 1988 BUNN-O-MATIC CORPORATION SINGLE PHASE 60 HZ SCHEMATIC WIRING DIAGRA
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SCHEMATIC WIRING DIAGRAM L1 L2 VPSA GRN/YEL IND BLK RED THERMAL THERMAL SW. & THERMOSTAT CUT-OFF CUT-OFF 1850W BLK BLU/BLK RED TANK HEATER 50W WHI WHI "KEEP WARM" HEATER IND ON/OFF WHI/RED RED SWITCH 100W WHI/RED BLK RED LOWER LEFT WARMER IND ON/OFF VIO RED SWITCH 100W BLK VIO RED IND UPPER WARMER ON/OFF BRN/BLK RED SWITCH 100W BRN/BLK BLK RED LOWER RIGHT WARMER 220 VOLTS A C 2 WIRE SINGLE PHASE SCHEMATIC WIRING DIAGRAM L1 L2 VPRA GRN/YEL IND BLK RED THERMAL THERMAL SW. & THERMOSTAT
