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®
BUNN
VP17A
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
10860.0001C 9/00 ©1997 Bunn-O-Matic Corporation
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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 (cont.) # 00658.0000 #00831.0000 # 02763.0000 10860.1 091300 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 requires 2-wire, grounded service rated 220 - 240 volts ac, 20 amp, single phase, 50 Hz. An all pole disconnect means must be incorporated in the fixed wiring according to local wiring regulations. Proceed as follows: ELECTRICAL HOOK-UP CAUTION – Improper electrical installation will damage electronic components. 1. An electrician must provide electrical service
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CLEANING 1. 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. 2. Check and clean the sprayhead. The sprayhead holes must always remain open. 3. With the sprayhead removed, insert the deliming spring (provided) all the way into the sprayhead tube. When inserted properly, no more than two inches of spring should be visible. Saw back and forth five or six times. NOTE – In hard water areas, this may need
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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 Spitting or excessive steaming 1. Lime Build-up Inspect 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 condi- tions. Excessive mineral build-up on stainless steel surfaces can ini- tiate corrosive reactions resulting in serious leaks. 2. Control Thermostat Refer to Service - Control Ther- mostat for testing procedures. See page 10 Dri
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY ® Weak beverage (cont.) 4. Funnel Loading The BUNN paper filter must be centered in the funnel and the bed of grounds leveled by gentle shak- ing. 5. Water Temperature Place an empty funnel on an empty dispenser beneath the sprayhead. Initiate a brew cycle and check the water temperature immediately be- low the sprayhead with a ther- mometer. The reading should not be less than 195°F (91˚C). Adjust the control thermostat to increase the water
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Contents SERVICE This section provides procedures for testing and Control Thermostat............................................. 10 replacing various major components used in this ON/OFF Warmer Switch ...................................... 11 brewer should service become necessary. Refer to Tank Heater ....................................................... 12 Troubleshooting for assistance in determining the Thermal Cut-Offs ................................................ 13 cause of any pro
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SERVICE (cont.) 7. Voltage must not be present when the thermostat is turned to the "OFF" position. CONTROL THERMOSTAT If voltage is present as described, reinstall the capillary tube into the tank to the line 4.5" above the bulb, the control thermostat is operating properly. If voltage is not present as described, replace the thermostat. Removal and Replacement: 1. Remove wires from control thermostat. 2. Remove the thermostat capillary bulb by firmly pulling up on the capillary at the tank lid
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SERVICE (cont.) If voltage is present as described, reconnect the red ON/OFF WARMER SWITCH wire and proceed to #5. If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness. 5. With the black wire removed, remove the wire from the lower terminal. 6. Check for continuity across the center and lower terminal with the switch in the "ON" (upper) posi- tion. Continuity must not be present when the switch is in the "OFF" (lower) position. ONE WARMER If
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4. Remove sprayhead and the hex nut securing the SERVICE (cont.) sprayhead tube to the hood. Set aside for reas- TANK HEATER sembly. 5. Remove the eight #8-32 nuts securing the tank lid to the tank. 6. Remove the tank lid with sprayhead tube and tank heater. 7 Remove the two hex nuts securing the tank heater to the tank lid. Remove tank heater with gaskets and discard. 8. Install new tank heater with gaskets on the tank lid and secure with two hex nuts. 9. Install tank lid with sprayhead tube a
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SERVICE (cont.) Removal and Replacement: THERMAL CUT-OFFS 1. Disconnect the thermal cut-off from the terminal on the black lead from ready light harness and the black lead from the control thermostat or the tank heater terminal and the red lead from the main harness. 2. Remove the white lead from the tank "keep warm" heater from the thermal cut-off terminal. 3. Install new thermal cut-off. 4. Refer to Fig. 9 when reconnecting wires. BLK Lead BLK Lead from Control Thermostat P1262 Thermal Cut-Off
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SERVICE (cont.) wire, and red/white, brown/black or violet wires on the WARMER ELEMENT(S) 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- ment terminals. 4. Remove the two #8-32 nuts securing the warmer element to the warmer plate. 5. Securly install new warmer el
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10860.1 091300 Page 15
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10860.1 091300 Page 16
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10860.1 091300 Page 17
