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Bunn CWT APS-DV - page 1
CWT -DV , CWT APS-DV , CWTF-DV , CWTF APS-DV ...
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Bunn CWT APS-DV - 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 120V 15 amp, 120/208V 20 amp or 120/240V 20 amp. The brewer has a hot water faucet for allied beverage use. It is only for indoor use on a sturdy counter or shelf. BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Mat ...
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Bunn CWT APS-DV - page 3
Page 3 #12364.0000 ...
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Bunn CWT APS-DV - page 4
Page 4 #00656.0000 ...
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Bunn CWT APS-DV - page 5
Page 5 36102 090203 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Requires 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. 120V VERSION 120/208-240V VERSION Requires 3-wire, grounded service rated 120/240 volts ac, 20 amp, single phase, 60 Hz. ELE ...
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Bunn CWT APS-DV - page 6
Page 6 1. Flush the water line and securely attach it to the inlet flare. 2. Turn on the water supply. 3. On faucet models, place an empty vessel beneath the faucet and lift the handle until water is dispensed. PLUMBING REQUIREMENTS These brewers must be connected to a cold water system with operating pressure between 20 and 90 psi (138 and 620 kPa ...
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Bunn CWT APS-DV - page 7
Page 7 36102 090203 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" (lowe ...
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Bunn CWT APS-DV - page 8
Page 8 36102 090203 2. Setting batch sizes. To set a batch volume, first check that the SET/LOCK switch is in the "SET" position on the circuit board. Press and hold the ST ART or BREW switch until three distinct clicks are heard, and then release the switch. (Failure to release the switch within two seconds after the third click causes t ...
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Bunn CWT APS-DV - page 9
Page 9 36102 090203 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 perf ...
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Bunn CWT APS-DV - page 10
Page 10 36102 090203 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont.) 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 replacement part #29329.1000 3. Control Thermosta ...
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Bunn CWT APS-DV - page 11
Page 11 36102 090203 TROUBLESHOOTING (cont.) PROBLEM Inconsistent beverage level in dispenser Consistently low beverage level in the dispenser Spitting or excessive steaming PROBABLE CAUSE 1. Strainer/flow control (.222 GPM) 2. Syphon System 3. Lime Build-up CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water c ...
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Bunn CWT APS-DV - page 12
Page 12 36102 090203 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 C ...
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Bunn CWT APS-DV - page 13
Page 13 36102 090203 TROUBLESHOOTING (cont.) PROBLEM Weak beverage Dry coffee grounds remain in the funnel Brewer is making unusual noises 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 ® paper filters must be used for pro ...
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Bunn CWT APS-DV - page 14
Page 14 36102 090203 TROUBLESHOOTING (cont.) PROBLEM Brewer is making unusual noises (cont.) Low beverage serving tempera- ture (CWTF Only) PROBABLE CAUSE 4. Tank Heater(s) 1. Warmer REMEDY Remove and clean lime off the tank heater(s). See page 20 Refer to Service - Warmer ele- ment for testing procedures. See page 29 ...
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Bunn CWT APS-DV - page 15
Page 15 ...
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Bunn CWT APS-DV - page 16
Page 16 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 CWT APS-DV - page 17
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Bunn CWT APS-DV - page 18
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Bunn CWT APS-DV - page 19
Page 19 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 both wires from the solenoid valve. Connect the brewer to the power source. With the lower warmer "ON/OFF" switch in the "ON" (upper) p ...
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Bunn CWT APS-DV - page 20
Page 20 SERVICE (cont.) START SWITCH ...
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Bunn CWT APS-DV - page 21
Page 21 TANK HEATERS Location: The tank heaters are located inside the tank and secured to the tank lid. Test Procedures: With Voltage selector switch set to 120V: 1. Disconnect the brewer from the power supply. 2. With a voltmeter, check the tank heater voltage across the white wire from the terminal block and black wire from the tank heater. Conn ...
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Bunn CWT APS-DV - page 22
Page 22 SERVICE (cont.) 36102 090203 15. Reconnect the wires to the limit thermostat and tank heaters and control thermostat. See Limit Thermostat and Control Thermostat sections in this manual when reconnecting wires. 16. Install fill basin, secure with tank inlet fitting and gasket. Insert water supply line through grommet in fill basin. 17. Refe ...
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Bunn CWT APS-DV - page 23
Page 23 SERVICE (cont.) TANK HEATER SWITCH ...
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Bunn CWT APS-DV - page 24
Page 24 SERVICE (cont.) P1135 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 indicator/guar ...
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Bunn CWT APS-DV - page 25
Page 25 36102 090203 FIG. 16 VOLTAGE SELECTOR SWITCH P2759.40 White/Violet to Tank Heater Blue to Tank Heater White to Terminal Block FIG. 17 VOLTAGE SELECTOR SWITCH TERMINALS SERVICE (cont.) VOLTAGE SELECTOR SWITCH - DV models only P2504 Location: The voltage selector switch is located on the component mounting bracket behind the front access pane ...
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Bunn CWT APS-DV - page 26
Page 26 THERMAL FUSES ...
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Bunn CWT APS-DV - page 27
Page 27 SERVICE (cont.) DIGITAL TIMER FIG. 20 DIGITAL TIMER ...
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Bunn CWT APS-DV - page 28
Page 28 SERVICE (cont.) To 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 times. (Failure to re- lease the switch within two seconds after the third click causes the volume setting to be aborted and pre- vious ...
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Bunn CWT APS-DV - page 29
Page 29 SERVICE (cont.) WARMER ELEMENT(S) Location: The warmer elements are located under the warmer plates. Test Procedures: 1. Disconnect the brewer from the power source. 2. With a voltmeter, check voltage across the white wire from the terminal block and the wire from the "ON/OFF" switch to the warmer element with the "ON/OFF&quo ...
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Bunn CWT APS-DV - page 30
Page 30 36102 090203 T1 T5 T3 T4 T2 BLK-14 BLK-14 120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE WHI-14 WHI WHI WHI WHI/RED WHI/RED WHI/RED WHI WHI WHI WHI WHI WHI WHI WHI WHI/GRN WHI/BLU WHI/VIO-14 BLU-14 RED-14 TANK HEATER 1320 W 1800 W TANK HEATER SELECTOR SWITCH 10836.0009A 02/03 ©2003 BUNN-O-MATIC CORPORATION BLK BLK BLK BR ...
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Bunn CWT APS-DV - page 31
Page 31 36102 090203 T1 T5 T3 T4 T2 BLK-14 BLK-14 120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE SINGLE PHASE WHI-14 WHI WHI WHI/RED WHI/RED WHI WHI/GRN WHI/BLU WHI/VIO-14 BLU-14 RED-14 TANK HEATER TANK HEATER SELECTOR SWITCH 10836.0010A 10/02 ©2001 BUNN-O-MATIC CORPORATION BLK BLK BLK BLK BLU BLU WHI/RED WHI HEATER SWITCH ON/OFF SWITCH L1 B ...
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