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Bunn VLPF - page 1
B UNN ® VLPF OPERA TING & SER VICE MANU AL B UNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 10179.0000G 6/00 ©1987 BUNN-O-MA TIC CORPORA TION ...
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Bunn VLPF - page 2
Page 2 INTRODUCTION This equipment will brew a half-gallon batch of coffee into an awaiting decanter and dispense hot water on demand for other purposes. It has two warmers to keep the beverage at the right temperature. The brewer is only for indoor use on a sturdy counter or shelf. CONTENTS Introduction and W arranty .............................. ...
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Bunn VLPF - page 3
Page 3 USER NOTICES Carefully read and follow all notices on the equipment and in this manual. They were written for your protection. All notices on the equipment should be kept in good condition. Replace any unreadable or dam- aged labels. #00656.0000 #00658.0000 #00882.0000 ...
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Bunn VLPF - page 4
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power sour ce 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. PLUMBING REQUIREMENTS This brewer must be connected to a cold water system with operating pressur ...
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Bunn VLPF - page 5
Page 5 10179 060100 INITIAL SET -UP CAUTION - The brewer must be unplugged throughout the Initial Set-up , except when specified in the instruc- tions. 1. Remove the top lid from the brewer . 2. Rotate the control thermostat knob fully counter clockwise to the “ OFF ” position and replace the top lid. 3. Insert an empty funnel into the funnel r ...
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Bunn VLPF - page 6
Page 6 2. Setting batch sizes. T o set a batch volume, first check that the SET/LOCK switch is in the “ SET ” position on the circuit board. Pr ess and hold the ST ART or BREW switch until thr ee distinct clicks are heard, and then release the switch. (Failure to release the switch within two seconds after the third click causes the volume sett ...
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Bunn VLPF - page 7
Page 7 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 T echnical Ser vices Department. • Inspection, testing, and repair of electrical equipment should be performed only ...
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Bunn VLPF - page 8
Page 8 TROUBLESHOOTING (cont.) PROBLEM Equipment will not operate Brew cycle will not start Automatic refill will not operate af- ter drawing hot water . PROBABLE CAUSE 1. No power or incorrect voltage 1. No water 2. Water strainer/Flow Control 3. On/Left switch 4. Start switch 5. Brew timer 6. Relay 7. Solenoid valve 1. On/Left switch REMEDY (A) P ...
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Bunn VLPF - page 9
Page 9 TROUBLESHOOTING (cont.) PROBLEM Automatic refill will not operate after drawing hot water .(cont.) W ater flows into tank continuously (On/left switch “ OFF ” ) W ater flows into tank continuously (On/left switch “ ON ” ) Water is not hot. PROBABLE CAUSE 2. Liquid level control system 3. Relay 4. Solenoid valve 1. Solenoid valve 1. L ...
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Bunn VLPF - page 10
Page 10 TROUBLESHOOTING (cont.) PROBLEM Decanter warmer is not hot Spitting or unusual steaming from sprayhead Inconsistent beverage level in de- canter PROBABLE CAUSE 1. Warmer switches 2. Decanter warmers 1. Control thermostat 2. Lime build-up CAUTION: T ank and tank compo- nents should be delimed regularly depending on local water condi- tions. ...
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Bunn VLPF - page 11
Page 11 TROUBLESHOOTING (cont.) PROBLEM Inconsistent beverage level in de- canter (cont.) Consistently high or low beverage level in decanter . Dripping from sprayhead Beverage overflows decanter . Weak beverage PROBABLE CAUSE 3. Syphon System 1. Brew timer adjustment 1. Syphon System 2. Solenoid valve 1. Beverage left in decanter 2. Incorrect deca ...
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Bunn VLPF - page 12
Page 12 TROUBLESHOOTING (cont.) PROBLEM Weak beverage (cont.) Brewer is making unusual noises PROBABLE CAUSE 4. Funnel loading 5. Water temperatur e 1. Solenoid valve 2. Plumbing lines 3. W ater supply REMEDY The BUNN ® paper filter should be centered in the funnel and the bed of ground coffee leveled by gentle shaking. Empty a decanter and place ...
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Bunn VLPF - page 13
Page 13 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y . Refer to T roubleshooting for assistance in determining the cause of any problem. COMPONENT ACCESS WARNING - Unplug the brewer befor e the removal of any panel or the replacement of any component ...
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Bunn VLPF - page 14
Page 14 BREW TIMER (early models) SERVICE (cont.) Location: The brew timer is located in the hood, to the right of the tank. T est Pr ocedure: 1. Disconnect the brewer from the power source and separate the polarized, three-pin connectors be- tween the timer and brewer wiring harness and rotate the brew timer dial fully counterclockwise. 2. With a ...
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Bunn VLPF - page 15
Page 15 BREW TIMER (cont.)(late models) 10179 060100 P2172.80 SERVICE (cont.) Location: The brew timer is located in the hood, to the right of the tank. T est Pr ocedures: 1. Disconnect the brewer from the power sour ce and remove the top cover . 2. With a voltmeter , check the voltage across termi- nals TL1 and TL2 when the “ ON/OFF ” switch i ...
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Bunn VLPF - page 16
Page 16 1. Modifying brew volumes. T o modify a brew vol- ume, first check that the SET/LOCK switch is in the “ SET ” position on the cir cuit board. T o increase a brew volume, place the ON/OFF switch in the “ ON ” position, press and hold the ST ART switch until three clicks are heard. Release the switch and press it again one or more tim ...
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Bunn VLPF - page 17
Page 17 SERVICE (cont.) Location: The control thermostat is located on the rear of the hood to the right of the tank. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce and remove the black wire from the control thermo- stat. 2. With a voltmeter , check the voltage across the black wire removed from the control thermostat and the whi ...
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Bunn VLPF - page 18
Page 18 SERVICE (cont.) DECANTER WARMERS ...
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Bunn VLPF - page 19
Page 19 SERVICE (cont.) LIMIT THERMOST A T Location: The limit thermostat is located on the tank lid be- tween the tank heater terminals. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce and remove the blue wire from the limit thermostat. 2. With a voltmeter , check the voltage across the blue wire removed from the limit thermostat ...
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Bunn VLPF - page 20
Page 20 LIQUID LEVEL CONTROL SYSTEM Location: The liquid level control system is composed of the circuit board in the right front corner of the hood and the probe in the tank lid. T est Pr ocedure: 1. Disconnect the brewer from the power source and remove the wires from terminals 1 & 4 of the cir - cuit board. 2. With a voltmeter , check the vo ...
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Bunn VLPF - page 21
Page 21 SERVICE (cont.) LIQUID LEVEL CONTROL SYSTEM (cont.) Removal and Replacement: 1. Remove all wires from the liquid level control board terminals. 2. Remove the two #8-32 slotted-head screws hold- ing the cir cuit board to the brewer hood. 3. Install the new cir cuit board to the hood, making sure that the two lock-washers are in place below t ...
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Bunn VLPF - page 22
Page 22 If continuity is not present as described, replace the switch. Removal and Replacement: 1. Remove all wires from the switch terminals. 2. Compress the clips inside the hood and gently push the switch through the opening. 3. Push the new switch into the opening and spread the clips to hold the switch captive in the panel. 4. Refer to FIG. 15 ...
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Bunn VLPF - page 23
Page 23 SERVICE (cont.) RELA Y FIG. 16 RELA Y P2172.80 Location: The relay is located in the right rear corner of the hood. T est Pr ocedures 1. Disconnect the brewer from the power sour ce. 2. With a voltmeter , check the voltage across termi- nals A & B in the lower corners of the relay when the On/Left switch is in the upper position and the ...
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Bunn VLPF - page 24
Page 24 Location: The Right switch is located in the front of the hood, above and to the right of the brew funnel. T est Pr ocedure: 1. Disconnect the brewer from the power source and remove the wires from all three terminals of the Right switch. 2. With a voltmeter , check the voltage across the black and white wires. Connect the brewer to the pow ...
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Bunn VLPF - page 25
Page 25 SERVICE (cont.) SOLENOID V AL VE P N : 6 5 8 ...
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Bunn VLPF - page 26
Page 26 ST ART SWITCH ...
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Bunn VLPF - page 27
Page 27 SERVICE (cont.) P N : 6 5 8 P1983 FIG. 24 T ANK HEA TER 10179 060100 T ANK HEA TER Location: The tank heater is located on the tank lid. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce and remove both wires from the tank heater . 2. With a voltmeter , check the voltage across the black and white wires removed from the tank ...
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Bunn VLPF - page 28
Page 28 10179 091599 ...
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