Bunn CWT APS-DV Operating & Service Manual Download 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 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 level is reached, turn the ON/OFF switch to "OFF" (lower). The brewer remem-
bers this volume and will continue to brew batches of this size until the volume setting procedure is repeated.

NOTE: 

When brewing coffee, batch volumes will decrease due to absorption by the coffee grounds.

3.

Setting programming disable feature. 

If it becomes necessary to prevent anyone from changing brew times

once programmed, you can set the SET/LOCK switch to the "LOCK" position.  This will prevent any program-
ming to be done until switch is once again placed in the "SET" position.

OPERATING CONTROLS

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 enable the brew circuit on all brewers, and the brew station
warmer on CWT & CWTF-DV Models.

START SWITCH

Momentarily pressing and releasing the switch starts a brew cycle when the "ON/OFF" switch is in the "ON" (upper)
position.

NOTE –

The "ON/OFF" switch must be in the "ON" (upper) position to initiate and complete a brew cycle.

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. Place the "ON/OFF" switch in the "ON" (upper) position.  Momentarily press and release the start switch.
6. When brewing is completed, simply discard the grounds and filter.

CLEANING

1.

The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all
surfaces on Bunn-O-Matic equipment.

2.

Check and clean the sprayhead.  The sprayhead holes must always remain open.

3.

With the sprayhead removed, insert the deliming spring (provided) all the way into the sprayhead tube.  When
inserted properly, no more than two inches of spring should be visible.  Saw back and forth five or six times.

NOTE –

In hard water areas, this may need to be done daily.  It will help prevent liming problems in the brewer

and takes less than a minute.

ADJUSTING BREW VOLUMES (cont.)

Summary of Contents for CWT APS-DV

Page 1: ...DV CWTF APS DV OPERATING SERVICE MANUAL BUNN O MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 PHONE 217 529 6601 FAX 217 529 6644 www bunnomatic com 36102 0000A 09 03 2003 Bun...

Page 2: ...sted by BUNN shipping the defective equipment prepaid to an authorized BUNN service location and 3 receiving prior authorization from BUNN that the defective equipment is under warranty THE FOREGOING...

Page 3: ...ow 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 02765 0000 36102 090203 Optional Field Wiring 1...

Page 4: ...15 6 A 2640 3400 W 1PH 3 Wire 60HZ 34955 0001 ONE WARMER MODELS 34955 0003 THREE WARMER BREWERS Optional Field Wiring 120 208 240 V 12 25 13 9 A 2440 3200 W 1PH 3 Wire 60HZ USER NOTICES CONT 120V 120...

Page 5: ...rical service 4 Using a voltmeter check the voltage and color coding of each conductor at the electrical source 5 Remove the front access panel beneath the sprayhead to gain access to the terminal blo...

Page 6: ...i 345 kPa The water inlet fitting is 1 4 flare NOTE Bunn O Matic recommends 1 4 copper tubing for installations of less than 25 feet and 3 8 for more than 25 feet from the 1 2 water supply line A tigh...

Page 7: ...d flowing from the funnel It should be 64 ounces 9 If not adjust the brew timer as required SeeAdjustingBrewVolumes Start and measure another brew cycle 10 Repeat step 9 until 64 oz water volume is ac...

Page 8: ...ntil the tank syphons down to its proper level Placing the switch in the ON upper position supplies power to enable the brew circuit on all brewers and the brew station warmer on CWT CWTF DV Models ST...

Page 9: ...thout a supply of water Theuseoftwowrenchesisrecommendedwheneverplumbingfittingsaretightenedorloosened Thiswillhelp to avoid twists and kinks in the tubing Make certain that all plumbing connections a...

Page 10: ...ice Timerfortesting procedures See page 26 and 27 Refer to Service Solenoid Valve for testing procedures See page 19 A Direction of flow arrow must be pointing towards brewer B Remove the strainer flo...

Page 11: ...rly depending on local water condi tions Excessive mineral build up on stainless steel surfaces can initiatecorrosivereactionsresult ing in serious leaks REMEDY A Direction of flow arrow must be point...

Page 12: ...alve 1 Dispenser 2 Timer 3 Solenoid Valve REMEDY Refer to Service Control Ther mostatfortestingprocedures See page 16 Thebrewermustbelevelorslightly lower in front to syphon properly Inspect the tank...

Page 13: ...entle shak ing Placeanemptyfunnelonanempty dispenser beneath the sprayhead Initiate a brew cycle and check the water temperature immediately below the sprayhead with a ther mometer The reading should...

Page 14: ...rewer 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...

Page 15: ...specified COMPONENT ACCESS WARNING Disconnect the brewer from the power source before the removal of any panel or the replace ment of any component All components are accessible by the removal of the...

Page 16: ...ts ac for two wire 120 volt models b 120 volts ac for three wire 120 208 volt models or 120 240 volt models 8 Disconnect the brewer from the power source Ifvoltageispresentasdescribed reinstallthecapi...

Page 17: ...cribed the limit thermo stat is operating properly If continuity is not present as described replace the limit thermostat FIG 4 LIMIT THERMOSTAT P2759 40 SERVICE cont P1800 BLU to Control Thermostat B...

Page 18: ...water supply 8 Refer to Fig 7 when reconnecting the wires Location TheON OFFswitchesarelocatedonthefrontofthe hood Test Procedure 1 Disconnect the brewer from the power source 2 Viewingtheswitchfromt...

Page 19: ...witch 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 sou...

Page 20: ...reconnect the blue wire to the top terminal and the white red wire to thebottomterminal Theswitchisoperatingproperly If continuity is not present as described replace the switch FIG 11 START SWITCH T...

Page 21: ...f continuity is not present as described replace the open tank heater NOTE If the tank heater s remain unable to heat remove and inspect heater s for cracks in the sheath Removal and Replacement 1 Dis...

Page 22: ...ual when reconnecting wires 16 Install fill basin secure with tank inlet fitting and gasket Insert water supply line through grommet in fill basin 17 Refer to Fig 13 when reconnecting the tank heater...

Page 23: ...or reassembly 6 Disconnect the wires on the limit thermostat and the tank heater and the control thermostat early models 7 Gently pull the thermostat sensor and grommet from the tank lid 8 Insert a tu...

Page 24: ...s 17 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 18...

Page 25: ...reconnect the white wire and continue to Step 3 If continuity is not present as described replace the voltage selector switch 3 With the selector switch in the 120 208 240V position disconnect the wh...

Page 26: ...yacrossthe thermal fuse terminals If continuity is present as described the thermal fuse is operating properly If continuity is not present as described replace the thermal fuse Removal and Replacemen...

Page 27: ...t as described disconnect the brewer from the power source and replace the timer 7 With a voltmeter check the voltage across termi nals TL1 and TL4 when the ON OFF switch is in the ON position Connect...

Page 28: ...me first check that the SET LOCK switch is in the SET position on the circuit board Place the ON OFF switch in the ON position press and hold the START switch until three distinct clicks are heard and...

Page 29: ...terminals on the warmer element If continuity is present as described reconnect the wires on the warmer element If continuity is not present as described replace the warmer element Removal and Replace...

Page 30: ...ON BLK BLK BLK BRN BLK BRN BLK BLK BLK BLK BLK BLU BLU WHI RED WHI HEATER SWITCH ON OFF SWITCH L1 BLU LIMIT THERMOSTAT READY INDICATOR GRN SW THERMOSTAT VIO VIO VIO VIO REAR WARMER FRONT WARMER LOWER...

Page 31: ...I 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 BLU LIMIT THERMOSTAT R...

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