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Bunn TS - page 1
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 10690.0001C 6/00 ©1998 Bunn-O-Matic Corporation CW A-APS,TS CWT A-APS,TS ...
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Bunn TS - page 2
Page 2 INTRODUCTION This equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It can be easily configured for either pour-over or automatic brewing. The automatic version may include a hot water faucet for allied beverage use. It is only for indoor use on a sturdy counter or shelf. W ARRANTY Bunn-O-Matic Corp. (“Bunn”) ...
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Bunn TS - page 3
Page 3 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. # 00656.0000 ...
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Bunn TS - page 4
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. "A" Models require 2-wire grounded service rated 230-240 volts ac, 20 amp, single phase, 50 Hz. Electrical Hook-Up CAUTION – Improper electrical installation will damage electronic components. 1. An electrici ...
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Bunn TS - page 5
Page 5 Models CWTFA-APS & CWTFA-TS 1. Attach the flare fitting from the short piece of tubing on the flow control (supplied) to the lower water inlet fitting at the left rear of the brewer. 2. Attach the flare fitting from the short piece of tubing on the tee (supplied) to the upper water inlet fitting at the left rear side of the brewer. 3. Fl ...
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Bunn TS - page 6
Page 6 10690.1 063000 7. Place the "ON/OFF" switch in the “ OFF ” (lower) position after water has stopped flowing from the funnel, and let the water in the tank reheat to the proper temperature. 8. Empty the dispenser and proceed as directed: 8A. Models CWA-PS & CWA-TS: The brewer is now ready for use in accordance with the coffe ...
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Bunn TS - page 7
Page 7 OPERA TING CONTROLS Models CWA-APS & CWA-TS: These models function without operating controls. Models CWTA-APS, CWTFA-APS, CWTA-TS & CWTFA-TS: ON/OFF SWITCH Placing the "ON/OFF" switch in the "OFF" (lower) position stops brewing. Stopping a brew cycle after it has been started will not stop the flow of water into ...
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Bunn TS - page 8
Page 8 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 ...
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Bunn TS - page 9
Page 9 TROUBLESHOOTING (cont.) Brew cycle will not start (cont.) Water is not hot Inconsistent beverage level in dis- penser PROBABLE CAUSE REMEDY 7. Water strainer/flow control (.222 GPM)(CWTA-APS, CWTFA- APS, CWTA-TS, CWTFA-TS) 1. Tank Heater Switch 2. Limit Thermostat CAUTION - Do not eliminate or bypass limit thermostat. Use only B.O.M. replace ...
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Bunn TS - page 10
Page 10 TROUBLESHOOTING (cont.) Inconsistent beverage level in the dispenser (cont.) Consistently low beverage level in the dispenser Spitting or excessive steaming Dripping from sprayhead 4. Water Pressure (CWTA-APS, CWTFA-APS,CWTA-TS & CWTFA- TS) 1. Timer (CWTA-APS, CWTFA- APS, CWTA-TS & CWTFA-TS) 2. Strainer/flow Control (.222 GPM) 1. Li ...
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Bunn TS - page 11
Page 11 TROUBLESHOOTING (cont.) Water flows into tank continuously (ON/OFF Switch "ON") Water flows into tank continuously (ON/OFF Switch "OFF") Beverage overflows dispenser Weak beverage 1. Timer (CWTA-APS, CWTFA- APS, CWTA-TS & CWTFA-TS) 1. Solenoid Valve (CWTA-APS, CWTFA-APS, CWTA-TS & CWTFA- TS) 1. Dispenser 2. Timer ...
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Bunn TS - page 12
Page 12 TROUBLESHOOTING (cont.) Weak beverage (cont.) Dry coffee grounds remain in the funnel Brewer is making unusal noises Brewer is making unusal noises (CW) 5. Water Temperature 1. Funnel Loading 1. Solenoid (CWTA-APS, CWTFA- APS, CWTA-TS & CWTFA-TS) 2. Plumbing Lines 3. Water Supply 4. Tank Heater 1. Tank Heater Place an empty funnel on an ...
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Bunn TS - page 13
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Bunn TS - page 14
Page 14 SERVICE (cont.) CONTROL THERMOSTAT Location: The control thermostat is located inside the trunk on the upper left side of the component bracket. Test Procedures: 1. Disconnect the brewer from the power source. 2. Locate the blue wire on the control thermostat. 3. With a voltmeter, check the voltage across the blue wire on the control thermo ...
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Bunn TS - page 15
Page 15 SERVICE (cont.) LIMIT THERMOSTAT (CWTA & CWTFA) Location: The limit thermostat is located inside the rear of the hood on the tank lid. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the blue and black wires from the limit thermostat. 3. With an ohmmeter, check for continuity across the limit thermostat te ...
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Bunn TS - page 16
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Bunn TS - page 17
Page 17 SERVICE (cont.) SOLENOID VALVE Location: The solenoid valve is located inside the trunk on the lower center part of the component bracket. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the white/green wire and black wire from the solenoid valve. With the "ON/OFF" switch in the "ON" (upper ...
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Bunn TS - page 18
Page 18 SERVICE (cont.) START SWITCH P1467.40 Location: The start switch is located in the front of the hood just to the right of center. Test Procedure: 1. Disconnect the brewer from the power supply. 2. Disconnect the white/orange wire from the top switch terminal and the white/yellow wire from the bottom switch terminal. 3. Check for continuity ...
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Bunn TS - page 19
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Bunn TS - page 20
Page 20 SERVICE (cont.) TANK HEATER SWITCH P2195.40 Location: The tank heater switch is located on the rear of the brewer on the upper left side of the trunk. Test Procedure: 1. Disconnect the brewer from the power source. 2. Disconnect the black wire from the limit thermo- stat (Automatics only) or the blue wire (Pour Overs only). 3. With the tank ...
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Bunn TS - page 21
Page 21 13. Insert new tank heater switch through the hole in the upper left rear of the trunk and secure with switch indicator/guard bracket, hex facenut and plastic facenut. 14. Refer to Fig. 15 and reconnect the wires to the tank heater switch terminals. 15. Set tank assembly inside the hood on mounting brackets and secure with two #8-32 screws. ...
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Bunn TS - page 22
Page 22 FIG. 17 TIMER TERMINALS P1472 TL1 WHI/RED from ON/OFF Switch(1) TL2 RED to Terminal Block (Red Insert) TL3 WHI/ORN from Start Switch TL4 WHI/GRN from Solenoid TL5 WHI/YEL from Start Switch TIMER (Early Models) FIG. 16 TIMER P1468.40 Location: The timer is located inside the front of the trunk on the component bracket. It consists of the dia ...
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Bunn TS - page 23
Page 23 SERVICE (cont.) DIGITAL BREW TIMER (Late Models) P2195.40 FIG. 18 DIGITAL BREW TIMER Location: The timer is located inside the front of the trunk on the top of the component bracket. Test Procedure. NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board. 1. Disconnect ...
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Bunn TS - page 24
Page 24 TL1 WHI/RED from ON/OFF Switch(1) TL2 RED to T erminal Block (Red Insert) TL3 WHI/ORN from Start Switch TL4 WHI/GRN from Solenoid TL5 WHI/YEL from Start Switch FIG. 19 DIGIT AL TIMER WIRING P2037 SERVICE (cont.) DIGITAL BREW TIMER (Late Models)(cont.) T imer Setting: NOTE: Prior to setting or modifying volumes, check that the brewer is conn ...
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Bunn TS - page 25
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