Bunn CRT5 Service Digital Brew Timer Late Models, If voltage is as described, proceed to #8

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SERVICE (cont.)

DIGITAL BREW TIMER (Late Models)

P2186.45

FIG. 20 DIGITAL BREW TIMER

Location:

The timer is located inside the front of the trunk on the upper right side of component bracket.

Test Procedure

NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board.

1.Disconnect the brewer from the power source and remove the front access panel.

2.Remove the two #8-32 screws securing circuit board to the mounting bracket.

3.Remove circuit board and spacers (as required).

4.With a voltmeter, check the voltage across termi- nals TL1 and TL2 when the "ON/OFF" switch is in the "ON" position. Connect the brewer to the power source. The indication must be:

a)120 volts ac for two wire 120 volt models and three wire 120/240 volt models.

b)200 to 240 volts ac on two wire 200 volt or 240 volt models.

5.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.

If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness.

6.Disconnect the white/blue wire from terminal TL3 and the blue/black wire from terminal TL5. With a voltmeter, check for continuity across the two wires when the "ON/OFF" switch is in the "ON" position (upper) and the START switch is pressed. Connect the brewer to the power source. The indication must be:

a)120 volts ac for two wire 120 volt models and three wire 120/240 volt models.

b)200 to 240 volts ac for two wire 200 volt or 240 volt models.

If continuity is present as described, reconnect the wires and proceed to #7.

If continuity is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness.

7.With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the "ON/OFF" switch is in the "ON" position. Connect the brewer to the power source. The indication must be 0 volts.

If voltage is as described, proceed to #8.

If voltage is not as described, disconnect the brewer from the power source and replace the timer.

8.With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the "ON/OFF" switch is in the "ON" position. Connect the brewer to the power source and press the "START" switch. The indica- tion must be as follows:

a)120 volts ac for two wire 120 volt models and three wire 120/240 volt models.

b)200 to 240 volts ac on two wire 200 volt or 240 volt models.

If voltage is present as described, the brew timer is operating properly. Reset the timer as required, to obtain the desired brew volume.

If voltage is not present as described, disconnect the brewer from the power source and replace the timer.

Removal and Replacement:

1.Remove the two #8-32 screws securing circuit board to the mounting bracket.

2.Remove circuit board and spacers (as required).

3.Remove all wires from the timer.

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Contents Bunn CRT5 Introduction WarrantyUser Notices Electrical Requirements Plumbing RequirementsElectrical Hook-Up Models CRTF5, CRTF5A & CRTF5B Plumbing RequirementsModels CRT5, CRT5A & CRT5B Models CRTF5 & CRTF5BInitial SET-UP Adjusting Brew VolumesOperating Controls CleaningON/OFF Switch Start SwitchTo the brewer TroubleshootingProblem Probable Cause Brew cycle will not start No waterControl Thermostat Tank Heater TroubleshootingProblem Brew cycle will not start Water is not hotInconsistent beverage level DispenserSyphon System Spitting or excessive steaming Dripping from sprayhead Dry coffee grounds remain Funnel Brewer is making unusal noisesPlumbing Lines Water Supply See Tank Heater WarmerControl Thermostat ServiceComponent Access ContentsFirst Type Thermostat Second Type Thermostat Service Control ThermostatLimit Thermostat ServiceLower Center Warmer ON/OFF Warmer SwitchSolenoid Valve Test Procedures Disconnect the brewer from the power sourceStart Switch Thermostat w/bracket early models only Tank HeaterTank Heater Terminals Service Tank HeaterTank Heater Switch Tank Heater SwitchTank Heater Switch Terminals Service Tank Heater SwitchThermal CUT-OFF Service Thermal CUT-OFF Brewers W/FaucetService Timer Early Models Test Procedure Disconnect the brewer from the power sourceDisconnect the black and white wires from the solenoid Timer Terminals Service TimerIf voltage is as described, proceed to #8 Service Digital Brew Timer Late ModelsService Digital Brew Timer Late Modelscont To increase a brew volume, place the ON/OFFSetting brew volumes. To set a brew volume Warmer Elements Warmer Elements10478 10478 10478

CRT5, CRTF5 specifications

The Bunn CRTF5 and CRT5 coffee brewers are appreciated by coffee enthusiasts and professionals alike for their reliability, efficiency, and innovative features. These commercial brewing systems are designed to deliver high-quality coffee consistently, making them ideal for cafes, restaurants, and other food service operations.

One of the standout features of the Bunn CRTF5 is its ability to brew multiple batches of coffee simultaneously. With a capacity of brewing up to 3.8 gallons per hour, it is equipped to handle high demand without compromising on quality. The unit has a programmable digital control which allows users to easily adjust brew temperature and time, ensuring each batch is brewed to perfection. This level of control empowers operators to customize their brewing process according to the unique preferences of their customers.

In terms of design, the Bunn CRTF5 and CRT5 models incorporate a stainless-steel exterior that not only enhances durability but also adds a sleek look to any kitchen or coffee shop environment. The large, easy-to-read water level indicator allows for straightforward monitoring of the brewing process, minimizing the risk of running out of water during peak busy hours. The easy-to-use front-access design also simplifies the loading and unloading of coffee grounds and water.

Technologically, the Bunn CRTF5 and CRT5 incorporate advanced brewing technology that helps maintain optimal brew temperatures through the use of stainless-steel water tanks. These tanks ensure that water is heated quickly and is maintained at consistent temperatures throughout the brewing process, positively affecting flavor extraction and ensuring the rich taste of coffee.

Another crucial characteristic of these brewers is the brew basket, which is designed for efficient flow control. This feature assists in achieving an even extraction process, thereby enhancing the overall quality of the coffee produced. Furthermore, the sturdy construction of the basket ensures that it can withstand the demands of daily use in a high-traffic environment.

In conclusion, the Bunn CRTF5 and CRT5 coffee brewers stand out in the commercial coffee brewing market. Their combination of robust features, advanced technologies, and user-friendly design makes them a smart choice for those looking to serve high-quality coffee quickly and efficiently. Whether in a bustling café or a restaurant, these brewers are built to deliver exceptional coffee experiences every time.
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