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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”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing wi
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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. ! WARNING Fill water tank before turning -on thermostat or connecting appliance to power source. Use only on a properly protected circuit capable of the rated load. Electrically ground the chassis. Follow national/local electrical codes. Do not use near combustibles. # 00831.7000 FAILURE TO COMPLY RISKS
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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. L2 Red White WHITE L2 RED Neutral NEUTRAL White 120V.A.C. 120V.A.C. 120V.ac WHITE L1 BLACK 208 or 240V.A.C. 208 or 240Vac Neutral NEUTRAL 120V.A.C. 120V.ac 120 V.a.c L1 BLACK L1 Black L1 Black Model 35 requires 3- wire, grounded service rated 120/208 or 120/
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FLOW PLUMBING REQUIREMENTS (cont.) BE SURE TO INSTALL THE ABOVE ASSEMBLY AS SHOWN 10165.0000D 6/93 © 1988 BUNN-O-MATIC CORPORATION EARLY MODELS W/OUT FAUCET 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. BE SURE TO INSTALL THE ABOVE 2. Flush the water line and securely attach it to the ASSEMBLY AS SHOWN flare fitting on the strainer. 26225.0000A 4/95 ©
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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 connect the brewer to the power source. 4. Fill the tank with water as directed: 4A. Models CW-APS & CW-TS: Pour three pitchers of tap water into the screened area on
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OPERATING 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 until the tank syphons down to its proper level. Placing the switch in the "ON" upper position supplies power to the brew station warmer and enables the brew circuit. START SWITC
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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 qualified service personnel. • All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the appl
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle will not start (cont.) 5. Timer Refer to Service - Timer for (CWT-APS, CWTF-APS, CWT-TS, testing procedures. See page 22 CWTF-TS) 6. Solenoid Valve Refer to Service - Solenoid Valve for testing procedures. See page 18 7. Water strainer/flow control (A) Direction of flow arrow must (.222 GPM) be pointing towards brewer. (B) Remove the strainer/flow control and check for obstruc- tions. Clear or replace. Water is not hot 1. Tank Heat
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Inconsistent beverage level in 1. Strainer /flow control (.222 (A) Direction of flow arrow must dispenser GPM) (CWT-APS, CWTF-APS, be pointing towards the brewer. CWT-TS, CWTF-TS) (B) Remove the strainer/flow control and check for obstruc- tion. Clear or replace. 2. Syphon System The brewer must be level or slightly lower in front to syphon properly. 3. Lime Build-up Inspect the tank assembly for CAUTION - Tank and tank excessive lime deposit
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Spitting or excessive steaming 2. Control Thermostat Refer to Service - Control (cont.) Thermostat for testing proce- dures. See page 15 Dripping from sprayhead 1. Syphon System The brewer must be level or slightly lower in front to syphon properly. 2. Lime Build-up Inspect the tank assembly for CAUTION - Tank and tank com- excessive lime deposits. Delime ponents should be delimed as required. regularly depending on local water conditions. Ex
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TROUBLESHOOTING (cont.) REMEDY PROBLEM PROBABLE CAUSE Remove and clean lime off the Brewer is making unusal noises 4. Tank Heater tank heater. See page 19 (cont.)(CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) Remove and clean lime off the Brewer is making unusal noises 1. Tank Heater tank heater. See page 19 (CW) Page 13
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3 2 4 3 2 4 1 5 .5 1 5 MINUTES BUNN-O-MATIC .5 P/N 2235-120 VAC MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS SERVICE (cont.) Test Procedures: 1. Disconnect the brewer from the power source. CONTROL THERMOSTAT 2. Locate the blue wire on the control thermostat. 3. Check the voltage across the blue wire on the control thermostat and the white insert on two pole 120 volt terminal block or three pole 120/
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3 2 4 1 5 .5 MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS LIMIT THERMOSTAT 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 tube. 5. Insert the capillary bulb through the
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3 2 4 1 5 .5 MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS SERVICE (cont.) 6. Check the solenoid valve for coil action. Connect the brewer to the power source. With "ON/OFF" SOLENOID VALVE switch in the "ON' upper position press start switch and listen carefully in the vicinity of the solenoid valve for a" clicking" sound as the coil magnet attracts. 7. Disconnect the brewer from the power source. If the sound is heard as described and water will not pa
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3 2 4 1 5 .5 MINUTES BUNN-O-MATIC P/N 2235-120 VAC USE COPPER WIRE ONLY FOR POWER SUPPLY CONNECTIONS SERVICE (cont.) BLU to BLU Lead START SWITCH from Timer P1 WHI/RED to ON/OFF Switch P1133 TANK HEATER P-150 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 from the bottom switch terminal. 3. Check for continuity acr
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11. Install tank lid with limit thermostat, sprayhead SERVICE (cont.) tube, tank heater, coil assembly (brewers with TANK HEATER (Cont.) faucet) and control thermostat with bracket (early brewers only) using eight #8-32 hex nut. If voltage is present as described, proceed to #4 12. Reconnect the inlet and outlet water lines to the If voltage is not present as described, refer to the faucet coil assembly. Wiring Diagrams and check wiring harness. 13. Secure spayhead tube to hood using a hex nut.
