Bunn CRT5, CRTF5 service manual Warmer Elements

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SERVICE (cont.)

WARMER ELEMENT(S)

P939

FIG. 22 WARMER ELEMENTS

Location:

The warmer elements are located under the warmer plates.

Test Procedures:

1.Disconnect the brewer from the power source.

2.Use the white or red wire to the terminal block and the white/red, yellow, white/violet, brown/black or violet wire to the "ON/OFF" switch.

3.With a voltmeter, check voltage across the white or red and white/red, yellow, white/violet,brown/black or violet with the "ON/OFF" switch in the

"ON" position. 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 or 240 volt models.

4.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to wiring diagrams and check brewer wiring harness.

5.Check the continuity across the two 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 Replacement:

1.Remove the three #4-40 screws securing the warmer assembly to the brewer.

2.Lift the warmer assembly from the brewer.

3.Disconnect the two wires from the warmer ele- ment terminals.

4.Remove the two #8-32 nuts securing the warmer element to the warmer plate.

5.Securely install new warmer element.

6.Reconnect the two wires to warmer element termi- nals.

7.Securely install warmer assembly on the brewer.

8.Refer to Fig. 23 when reconnecting the wires.

WHI/RED to ON/OFF Switch (Center Warmer) YEL to ON/OFF Switch (Left Front Warmer) WHI/VIO to ON/OFF Switch (Left Rear Warmer) BRN/BLk to ON/OFF Switch (Right Front Warmer) VIO to ON/OFF Switch (Right Rear Warmer)

WHI to Terminal Block (120V or 120/240V Brewers)

RED to Terminal Block (200V or 240V Brewers

P1261

FIG. 23 WARMER ELEMENT TERMINALS

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10478 061500

 

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Contents Bunn CRT5 Introduction WarrantyUser Notices Electrical Hook-Up Electrical RequirementsPlumbing Requirements Models CRT5, CRT5A & CRT5B Plumbing RequirementsModels CRTF5 & CRTF5B Models CRTF5, CRTF5A & CRTF5BInitial SET-UP Adjusting Brew VolumesON/OFF Switch CleaningStart Switch Operating ControlsProblem Probable Cause TroubleshootingBrew cycle will not start No water To the brewerProblem TroubleshootingBrew cycle will not start Water is not hot Control Thermostat Tank HeaterSyphon System Inconsistent beverage levelDispenser Spitting or excessive steaming Dripping from sprayhead Plumbing Lines Water Supply Dry coffee grounds remainFunnel Brewer is making unusal noises See Tank Heater WarmerComponent Access ServiceContents Control ThermostatFirst 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/FaucetDisconnect the black and white wires from the solenoid Service Timer Early ModelsTest Procedure Disconnect the brewer from the power source Timer Terminals Service TimerIf voltage is as described, proceed to #8 Service Digital Brew Timer Late ModelsSetting brew volumes. To set a brew volume Service Digital Brew Timer Late ModelscontTo increase a brew volume, place the ON/OFF 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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