Bunn CRTF5, CRT5 Solenoid Valve, Test Procedures Disconnect the brewer from the power source

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SERVICE (cont.)

SOLENOID VALVE

P2186.45

FIG. 8 SOLENOID VALVE

Location:

The solenoid valve is located inside the trunk on the lower center part of the component bracket.

Test Procedures:

1.Disconnect the brewer from the power source.

2.Disconnect the white and black wires from the solenoid valve. With the "ON/OFF" switch in the "ON" upper position press the start switch.

3.Check the voltage across the white and black wires with a voltmeter. 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 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 for continuity across the solenoid valve coil terminals.

If continuity is present as described, reconnect the white and black wire from the timer.

If continuity is not present as described, replace the solenoid valve.

6.Check the solenoid valve for coil action. Connect the brewer to the power source. With "ON/OFF" 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 pass through the solenoid valve, there may be a blockage in the water line before the solenoid valve or, the solenoid valve may require inspection for wear, and removal of waterborne particles.

If the sound is not heard as described, replace the solenoid valve.

Removal and Replacement:

1.Remove the white and black from the solenoid valve.

2.Turn off the water supply to the brewer.

3.Disconnect the water lines to and from the sole- noid valve.

4.Remove the two #8-32 screws securing the sole- noid mounting bracket to the component bracket. Remove solenoid bracket and solenoid valve as an assembly.

5.Remove the two #10-32 screws and lockwashers securing the solenoid valve to the solenoid bracket.

6.Using two #10-32 screws and lockwashers install new solenoid valve on solenoid mounting bracket.

7.Using two #8-32 screws install solenoid valve and bracket to the component bracket.

8.Securely fasten the water lines to and from the solenoid valve.

9.Refer to Fig. 9 when reconnecting the wires.

WHI from Timer

BLK from Timer

P1132.40

FIG. 9 SOLENOID VALVE TERMINALS

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10478 061500

 

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Contents Bunn CRT5 Warranty IntroductionUser Notices Electrical Requirements Plumbing RequirementsElectrical Hook-Up Models CRTF5 & CRTF5B Plumbing RequirementsModels CRT5, CRT5A & CRT5B Models CRTF5, CRTF5A & CRTF5BAdjusting Brew Volumes Initial SET-UPStart Switch CleaningON/OFF Switch Operating ControlsBrew cycle will not start No water TroubleshootingProblem Probable Cause To the brewerBrew cycle will not start Water is not hot TroubleshootingProblem Control Thermostat Tank HeaterInconsistent beverage level DispenserSyphon System Spitting or excessive steaming Dripping from sprayhead Dry coffee grounds remain Funnel Brewer is making unusal noisesPlumbing Lines Water Supply Tank Heater Warmer SeeContents ServiceComponent Access Control ThermostatService Control Thermostat First Type Thermostat Second Type ThermostatService Limit ThermostatON/OFF Warmer Switch Lower Center WarmerTest Procedures Disconnect the brewer from the power source Solenoid ValveStart Switch Tank Heater Thermostat w/bracket early models onlyService Tank Heater Tank Heater TerminalsTank Heater Switch Tank Heater SwitchService Tank Heater Switch Tank Heater Switch TerminalsService Thermal CUT-OFF Brewers W/Faucet Thermal CUT-OFFService Timer Early Models Test Procedure Disconnect the brewer from the power sourceDisconnect the black and white wires from the solenoid Service Timer Timer TerminalsService Digital Brew Timer Late Models If voltage is as described, proceed to #8Service 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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