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Bunn CW-APS - page 1
OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION OF CANADA LTD. 280 INDUSTRIAL P ARKW A Y SOUTH AURORA, ONT ARIO L4G 3T9 PHONE: (905) 841-2866 F AX: (905) 841-2775 10690.7000 1/99 ©1993 Bunn-O-Matic Corporation BUNN ® CW-APS CW-APS CWT-TS CWT-TS ...
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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. WARRANTY Bunn-O-Matic Corp. (“Bunn”) w ...
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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. # 00831.7000 Fill water tank before turning -on thermostat or connecting appliance to power source. Do not use near combustibles. Follow national/local ...
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Bunn CW-APS - page 4
Page 4 120V.A.C. NEUTRAL WHITE L1 BLACK NEUTRAL WHITE L1 BLACK 208 or 240V.A.C. 120V.A.C. 120V.A.C. L2 RED 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. M ...
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Bunn CW-APS - page 5
Page 5 10165.0000D 6/93 © 1988 BUNN-O-MATIC CORPORATION BE SURE TO INSTALL THE ABOVE ASSEMBLY AS SHOWN Models CWT-APS, CWT-TS 1. Attach the flare fitting from the short piece of tubing on the flow control (supplied) to the water inlet fitting at the left rear of the brewer. 2. Flush the water line and securely attach it to the flare fitting on the ...
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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 con ...
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Bunn CW-APS - page 7
Page 7 OPERA TING CONTROLS Models CW-APS & CW-TS: These models function without operating controls. Models CWT-APS, CWTF-APS, CWT-TS, CWTF-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 the funnel un ...
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Bunn CW-APS - 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 CW-APS - page 9
Page 9 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont.) (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) Water is not hot PROBABLE CAUSE REMEDY 5. Timer 6. Solenoid Valve 7. Water strainer/flow control (.222 GPM) 1. Tank Heater Switch 2. Limit Thermostat CAUTION - Do not eliminate or bypass limit thermostat. Use only BOM replacement part #0468 ...
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Bunn CW-APS - page 10
Page 10 TROUBLESHOOTING (cont.) PROBLEM Inconsistent beverage level in dispenser Consistently low beverage level in the dispenser (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) Spitting or excessive steaming PROBABLE CAUSE 1. Strainer /flow control (.222 GPM) (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) 2. Syphon System 3. Lime Build-up CAUTION - Tank and tank compo ...
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Bunn CW-APS - page 11
Page 11 TROUBLESHOOTING (cont.) PROBLEM Spitting or excessive steaming (cont.) Dripping from sprayhead Water flows into tank continu- ously (ON/OFF Switch "ON") Water flows into tank continu- ously (ON/OFF Switch "OFF") Beverage overflows dispenser PROBABLE CAUSE 2. Control Thermostat 1. Syphon System 2. Lime Build-up CAUTION - ...
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Bunn CW-APS - page 12
Page 12 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) 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 BUNN ® ...
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Bunn CW-APS - page 13
Page 13 TROUBLESHOOTING (cont.) PROBLEM Brewer is making unusal noises (cont.)(CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) 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 19 Remove and clean lime off the tank heater. See page 19 ...
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Bunn CW-APS - page 14
Page 14 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 service pe ...
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Bunn CW-APS - page 15
Page 15 SERVICE (cont.) CONTROL THERMOSTAT 1 2 3 4 5 .5 MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS B U N N C W S E R I E S R E A D Y 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 ...
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Bunn CW-APS - page 16
Page 16 SERVICE (cont.) CONTROL THERMOSTAT (cont.) 3. Early Models: Remove the two #8-32 screws securing control thermostat bracket mounted inside the hood. Late Models: Remove the one #8-32 screw se- curing the control thermostat to the component bracket in the trunk. 4. Slide the grommet to the line 4.5" above the bulb on the new capillary t ...
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Bunn CW-APS - page 17
Page 17 SERVICE (cont.) ON/OFF SWITCH BUNN M A N U F A C T U R E D B Y B U N N - O - M A T I C C O R P O R A T I O N S P R I N G F I E L D , I L L I N O I S , U . S . A . M O D E L S / N V O L T S A . C . A M P W A T T S P H A S E W I R E H E R T Z C O V E R E D U N D E R O N E O R M O R E O F T H E F O L L O W I N G P A T E N T S : O N E O R M O R ...
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Bunn CW-APS - page 18
Page 18 SERVICE (cont.) SOLENOID VALVE 1 2 3 4 5 .5 MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS B U N N C W S E R I E S R E A D Y P1127 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 sourc ...
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Bunn CW-APS - page 19
Page 19 SERVICE (cont.) START SWITCH B U N N M A N U F A C T U R E D B Y B U N N - O - M A T I C C O R P O R A T I O N S P R I N G F I E L D , I L L I N O I S , U . S . A . M O D E L S / N V O L T S A . C . A M P W A T T S P H A S E W I R E H E R T Z C O V E R E D U N D E R O N E O R M O R E O F T H E F O L L O W I N G P A T E N T S : O N E O R M O ...
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Bunn CW-APS - page 20
Page 20 SERVICE (cont.) TANK HEATER (Cont.) If voltage is present as described, proceed to #4 If voltage is not present as described, refer to the Wiring Diagrams and check wiring harness. 4. Disconnect the black wire and the white wire or red wire from the tank heater terminals. 5. Check for continuity across the tank heater termi- nals. If contin ...
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Bunn CW-APS - page 21
Page 21 SERVICE (cont.) TANK HEATER SWITCH 1 2 3 4 5 .5 MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS B U N N C W S E R I E S R E A D Y P1127 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 sou ...
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Bunn CW-APS - page 22
Page 22 SERVICE (cont.) TANK HEATER SWITCH (cont.) 15. Set tank assembly inside the hood on mounting brackets and secure with two #8-32 screws. 16. Reconnect the wires to the limit thermostat, tank heater and the control thermostat. Refer to limit thermostat, tank heater and control thermostat sections in this manual when reconnecting wires. 17. Br ...
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Bunn CW-APS - page 23
Page 23 SERVICE (cont.) TIMER (cont.) with a voltmeter when the "ON/OFF" switch is in the "ON" position (upper) and start switch pressed. Connect the brewer to the power source. The indication must be 120 volts ac for two wire 120 volt models and three wire 120/240 volt models. 6. Disconnect the brewer from the power source. 7. ...
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Bunn CW-APS - page 24
Page 24 120/240 VOLTS AC 3 WIRE 120 VOLTS AC 2 WIRE SINGLE PHASE MODEL 15 1320W @ 120V MODEL 20 1800W @ 120V MODEL 35 3500W @ 240V P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR. WHI BLK SOL BLU BLU WHI BREW TIMER BLK P1 P3 P2 WHI OPTIONAL AUTOMATIC BREW CIRCUIT SCHEMATIC WIRING DIAGRAM FOR CW, CWT, CWTF - APS, TS,TSR 10693.0000C 9/96 ...
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