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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 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-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified below: 2 years parts and 1 year labor. 2) Electr
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Models CWTF-DV & CWTF-APS DV ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Requirements for brewers without an attached cord set are as follows: 120V VERSION 120/208-240V VERSION Requires 2-wire, Requires 3-wire, grounded service grounded service rated 120 volts ac, rated 120/240 volts 15 amp, single ac, 20 amp, single phase, 60 Hz. phase, 60 Hz. ELECTRICAL HOOK-UP CAUTION – Improper electrical installation will damage
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PLUMBING REQUIREMENTS These brewers must be connected to a cold water system with operating pressure between 20 and 90 psi (138 1 and 620 kPa) from a ⁄2" or larger supply line. A shut-off valve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa) . The water 1 inlet fitting is ⁄4" flare. 1 3 NOTE - Bunn-O-Matic recommends ⁄4" copper tubing for installations of less than 25 feet and ⁄8
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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. Place the "ON/OFF" switch in the "ON" (upper) position, and momentarily press and release the start switch. Water will beg
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ADJUSTING BREW VOLUMES (cont.) 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 START 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 the volume setting to be aborted and previous volume setting will remain in memory). View the level of the liquid being dispensed. When the desired lev
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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 testing procedures. See page 26 and 27 6. Solenoid Valve Refer to Service - Solenoid Valve for testing procedures. See page 19 7. Water strainer/flow control (A) Direction of flow arrow must (.222 GPM) be pointing towards brewer. (B) Remove the strainer/flow con- trol and check for obstructions. Clear or replace. Water is not hot 1. Tank Heater Switch Service - Tank Heate
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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) be pointing towards the brewer. (B) Remove the strainer/flow con- trol and check for obstruction. 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 ex- CAUTION - Tank and tank compo- cessive lime deposits. Delime as nents should be
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Spitting or excessive steaming 2. Control Thermostat Refer to Service - Control Ther- (cont.) mostat for testing procedures. See page 16 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 ex- CAUTION - Tank and tank compo- cessive lime deposits. Delime as nents should be delimed regularly required. depending on local water condi- tions
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TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY ® Weak beverage 1. Filter Type BUNN paper filters must be used for proper extraction. 2. Coffee Grind A fine or drip grind must be used for proper extraction. 3. Sprayhead A clean spray-head must be used for proper extraction. ® The BUNN paper filter must be 4. Funnel Loading centered in the funnel and the bed of ground leveled by gentle shak- ing. Place an empty funnel on an empty 5. Water Temperature dispenser beneath the sprayhead. Initi
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TROUBLESHOOTING (cont.) REMEDY PROBLEM PROBABLE CAUSE Remove and clean lime off the Brewer is making unusual noises 4. Tank Heater(s) tank heater(s). See page 20 (cont.) Refer to Service - Warmer ele- Low beverage serving tempera- 1. Warmer ment for testing procedures. See ture (CWTF Only) page 29 36102 090203 Page 14
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6. Check the solenoid valve for coil action. Connect SERVICE (cont.) the brewer to the power source. With "ON/OFF" switch in the "ON" (upper) position press start SOLENOID VALVE 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 pass through the solenoid valve, there may be a blockage in the water line before the solenoid valve,
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