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Bunn CW-APS - 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 10690.0000F 8/00 ©1993 Bunn-O-Matic Corporation BU N N ® CW -APS, CWT -TS & CWT -TSR ...
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Bunn CW-APS - 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 CW-APS - 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. 10690 021800 #00831.0000 #00656.0000 #00658.0000 ...
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Bunn CW-APS - page 4
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Model 15 has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. Model 35 requires 3- wire, grounded service rated 120/208 or 120/240 volts ac, 20 amp, single phase, ...
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Bunn CW-APS - page 5
Page 5 PLUMBING REQUIREMENTS (cont.) SECOND TYPE MODELS W/FAUCET THIRD TYPE MODELS W/FAUCET Models CWTF-APS, CWTF-TS CWTF-TSR: 1. Flush the water line and securely attach it to the flare fitting on the strainer or tee. 2. Turn on the water supply. 3. Place an empty vessel beneath the faucet and lift the handle until water is dispensed. EARLY MODELS ...
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Bunn CW-APS - page 6
Page 6 INITIAL SET -UP CAUTION - The brewer must be disconnected from the power source throughout the Initial Set-up , except when specified in the instructions. 1. Insert an empty funnel into the funnel rails. 2. Place an empty dispenser under the funnel. 3. Place the heater switch at the rear of the brewer in the “ OFF ” (lower) position and ...
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Bunn CW-APS - page 7
Page 7 10690 062300 ADJUSTING BREW VOLUMES CAUTION - Disconnect the power source fr om the brewer prior to the removal of any panel for the replacement or adjustment of any component. NOTE: Prior to setting or modifying batch sizes, check that the brewer is connected to water supply , the tank is properly filled, and a funnel and server are in plac ...
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Bunn CW-APS - page 8
Page 8 COFFEE BREWING 1. Insert a BUNN ® filter into the funnel. 2. Pour the fresh coffee into the filter and level the bed of grounds by gently shaking. 3. Slide the funnel into the funnel rails. 4. Place an empty dispenser beneath the funnel. 5. Operate the brewer as directed: 5A. Models CW-APS & CW-TS: Pour one pitcher of tap water into the ...
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Bunn CW-APS - page 9
Page 9 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 CW-APS - page 10
Page 10 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont.) (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS, CWT-TSR &CWTF- TSR) Water is not hot PROBABLE CAUSE REMEDY 3. ON/OFF Switch 4. Start Switch 5. Timer 6. Solenoid Valve 7. Water strainer/flow control (.222 GPM) 1. Tank Heater Switch 2. Limit Thermostat CAUTION - Do not eliminate or by ...
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Bunn CW-APS - page 11
Page 11 TROUBLESHOOTING (cont.) PROBLEM Inconsistent beverage level in dis- penser Consistently low beverage level in the dispenser (CWT-APS, CWTF- APS, CWT-TS, CWTF-TS, CWT- TSR & CWTF-TSR) Spitting or excessive steaming PROBABLE CAUSE 1. Strainer /flow control (.222 GPM) (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS, CWT-TSR & CWTF-TSR 2. Syphon Sy ...
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Bunn CW-APS - page 12
Page 12 TROUBLESHOOTING (cont.) PROBLEM Spitting or excessive steaming (cont.) Dripping from sprayhead Water flows into tank continuously (ON/OFF Switch "ON") Water flows into tank continuously (ON/OFF Switch "OFF") Beverage overflows dispenser PROBABLE CAUSE 2. Control Thermostat 1. Syphon System 2. Lime Build-up CAUTION - Tank ...
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Bunn CW-APS - page 13
Page 13 TROUBLESHOOTING (cont.) PROBLEM Weak beverage Dry coffee grounds remain in the funnel Brewer is making unusal noises (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS, CWT-TSR, CWTF-TSR) PROBABLE CAUSE 1. Filter Type 2. Coffee Grind 3. Sprayhead 4. Funnel Loading 5. Water Temperature 1. Funnel Loading 1. Solenoid 2. Plumbing Lines 3. Water Supply REMEDY ...
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Bunn CW-APS - page 14
Page 14 TROUBLESHOOTING (cont.) PROBLEM Brewer is making unusal noises (cont.)(CWT-APS, CWTF-APS, CWT-TS, CWTF-TS, CWT-TSR, CWTF-TSR) Brewer is making unusal noises (CW) PROBABLE CAUSE 4. Tank Heater 1. Tank Heater REMEDY Remove and clean lime off the tank heater. See page 21 Remove and clean lime off the tank heater. See page 21 10690 062300 ...
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Bunn CW-APS - page 15
Page 15 CWT-TSR SERVICE 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 electri- cal equipment should be performed only by qualified se ...
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Bunn CW-APS - page 16
Page 16 SERVICE (cont.) CONTROL THERMOSTAT LATE MODELS Location: Early Models: The control thermostat is mounted on a bracket inside the hood on the right side just in front of the tank lid. Late Models: The control thermostat is located inside the trunk on the left side of the component bracket. Test Procedures: 1. Disconnect the brewer from the p ...
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Bunn CW-APS - page 17
Page 17 SERVICE (cont.) P1129 LIMIT THERMOSTAT 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 terminals. If c ...
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Bunn CW-APS - page 18
Page 18 SERVICE (cont.) ON/OFF SWITCH Location: The ON/OFF switch is located on the left front of the hood. Test Procedure: 1. Disconnect the brewer from the power source. 2. Viewing the switch from the back remove the white wire from the upper terminal and the black wire from the center terminal. 3. With a voltmeter, check the voltage across the w ...
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Bunn CW-APS - page 19
Page 19 SERVICE (cont.) SOLENOID VALVE P1127.40 Location: The solenoid valve is located inside the trunk on the center lower part of the component bracket. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the white and black wires from the solenoid valve. With the "ON/OFF" switch in the "ON" (upper) ...
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Bunn CW-APS - page 20
Page 20 SERVICE (cont.) START SWITCH P0150.50 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 blue wire from the top switch terminal and the white/red wire from the bottom switch terminal. 3. Check for continuity across the ...
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Bunn CW-APS - page 21
Page 21 TANK HEATER P1127.40 Location: The tank heater is located inside the tank and secured to the tank lid. Test Procedures: 1. Disconnect the brewer from the power supply. 2. With a voltmeter, check the voltage across the black and white wires on 100 or 120 volt models or the black and red wires for 120/240 volt mod- els, 200 volt models and 24 ...
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Bunn CW-APS - page 22
Page 22 SERVICE (cont.) TANK HEATER (Cont.) P1134.65 10690 062300 10. Install new tank heater with gaskets on the tank lid and secure with two hex nuts. 11. Install tank lid with limit thermostat, sprayhead tube, tank heater, coil assembly (brewers with faucet) and control thermostat with bracket (early brewers only) using eight #8-32 hex nut. 12. ...
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Bunn CW-APS - page 23
Page 23 SERVICE (cont.) TANK HEATER SWITCH P1127.40 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. 3. With the tank heater switch in the "ON"(upper) position, ...
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Bunn CW-APS - page 24
Page 24 SERVICE (cont.) P1135 10690 062300 TANK HEATER SWITCH (cont.) 13. Remove the plastic facenut, hex facenut and the switch indicator/guard bracket that secures tank heater switch to the rear of the brewer. Remove switch and discard. 14. Insert new tank heater switch through the hole in the upper left rear of the trunk and secure with switch i ...
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Bunn CW-APS - page 25
Page 25 TIMER(Early Models) P1127.40 Location: The timer is located inside the front of the trunk on the top of component bracket. Test Procedure. 1. Disconnect the brewer from the power source. 2. Disconnect the polarized, three pin connector from the brewer wiring harness and rotate the brew timer dial fully counterclockwise. 3. With a voltmeter, ...
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Bunn CW-APS - page 26
Page 26 SERVICE (cont.) TIMER (cont.) P1136 10690 062300 If voltage is present as described, the brew timer is operating properly. Reset the timer dial as required, to obtain the desired brew volume. If voltage is not present as described, replace the timer. Removal and Replacement: 1. Separate all connectors between the brewer wir- ing harness and ...
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Bunn CW-APS - page 27
Page 27 DIGITAL BREW TIMER (Late Models) P1127.40 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 the brewer from ...
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Bunn CW-APS - page 28
Page 28 BLU/BLK wire from TL5 to P1 WHI/GRN wire from TL4 to (WHI) Solenoid WHI/BLU wire from TL3 to (BLK) Solenoid WHI wire from TL2 to P2 BLK wire from TL1 to P3 FIG. 19 DIGIT AL TIMER WIRING P2037 SERVICE (cont.) DIGITAL BREW TIMER (Late Models)(cont.) 10690 062300 T imer Setting: NOTE: Prior to setting or modifying volumes, check that the brewe ...
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Bunn CW-APS - page 29
Page 29 10690 081100 ...
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Bunn CW-APS - page 30
Page 30 10690 081100 ...
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Bunn CW-APS - page 31
Page 31 10690 081100 ...
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Bunn CW-APS - page 32
Page 32 10690 081100 ...
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Bunn CW-APS - page 33
Page 33 10690 081100 ...
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