Bunn dispenser service manual Dispense Solenoid Valve Location

Page 32

SERVICE (cont.)

DISPENSE SOLENOID VALVE

P1935

FIG. 31 DISPENSE SOLENOID VALVE Location:

The dispense solenoid valve is located on the left side of the dispenser base inside of the rear cover.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the white/red and white/brown wires from the solenoid valve.

3.Check the voltage across the white/red and white/ brown wires with a voltmeter. Connect the dis- penser to the power source. The indication must be:

a)120 volts ac for 120 volt models.

b)230 volts ac for 230 volt CE models.

4.Disconnect the dispenser 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 the dispenser wiring harness.

5.Check for continuity across the solenoid valve coil terminals.

If continuity is present as described, reconnect the white/red and white/brown wires to the solenoid.

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

6.Check the solenoid valve for coil action. Connect the dispenser to the power source. Press the dis- pense switch and listen carefully for a "clicking" sound as the magnet attracts.

7. Disconnect the dispenser from the power source.

If the sound is heard as described and water will not pass through the solenoid valve, there may be a block- age in the water line before the solenoid valve or, the solenoid valve may require inspection for wear and the removal of waterborne particles.

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

Removal and Replacement:

1.Disconnect the dispenser from the power source and the water supply.

2.Remove the six #8-32 screws securing the rear panel to the dispenser.

3.Remove the white/red and white/brown wires from the solenoid valve.

4.Disconnect the water lines to and from the solenoid valve.

5.Remove the two #8-32 nuts securing the solenoid mounting bracket to the dispenser base. Remove the solenoid and bracket assembly.

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

7.Install a new solenoid valve to the bracket using two #10-32 screws and lockwashers.

8.Install the solenoid and bracket to the base and secure with two #8-32 nuts.

9.Install the water lines to and from the solenoid valve using pipe thread sealant (BOM #M2526.0000) and tighten securely.

10.Refer to Fig. 32 when reconnecting the wires.

WHI/RED to Control

Board (J7-2)

WHI/BRN to Control

Board (J7-4)

P1909

FIG. 32 DISPENSE SOLENOID TERMINALS

32

29793.1 021202

 

Image 32
Contents Bunn Powder Auto Fill Post Office BOX SPRINGFIELD, IllinoisBUNN-O-MATIC Commercial Product Warranty Introduction34561.0000 Initial SET-UPUser Notices Operating Instructions Adjustments Rinse and dry each item thoroughly before reas- sembling CleaningRecommended Daily Cleaning and Maintenance Tips Fault List Normal operation Powder Auto-Fill ready toDispense Door not closedTroubleshooting Problem Probable CausePowder Auto-Fill hopper not in- stalled properly ProblemRemedy Control Board and Probe Auger DriveTransformer Water Strainer OptionalProblem Probable Cause Remedy Service Component AccessAuger Drive Components Hopper LidRetainer Clip Spacer Dust Seal Hopper BaseDiagrams and check wiring harness Auger Drive MotorFrother and MIXING/WHIPPER Chamber Mixing ChamberWhipper Motor Volts ac for 120 volt models Volts ac for 230 volt CE modelsInstall dispense tip into the bottom of the whipper chamber Whipper MotorIf voltage is present as described, proceed to #5 If voltage is present as described, proceed to #9Test Procedure Low Product Detect Instal the new control board using the four #6-32 keps nuts Remove the control boardLocation TEST/SERVICE SwitchDisconnect the wires from the switch terminals Main Power ON/OFF Switch Main Power ON/OFF SwitchLamp Cord Assembly Refer to when reconnecting the wiresRemove new nut and washer from new lamp cord connector Lamp Cord ConnectorDisconnect the lamp cord from the lamp cord connector Lamp HOLDER/SOCKET Assembly Close the dispenser doorTransformer TransformerPotentiometer PotentiometerHopper Level Indicator Hopper Level IndicatorHopper Switch Hopper SwitchDoor Switch Door SwitchAdjustments Pressure Regulator and Needle ValveDispense Solenoid Valve Dispense Solenoid Valve LocationWiring Diagrams Schematic Wiring Diagram PAFSchematic Wiring Diagram Pafa

dispenser specifications

The Bunn dispenser is a highly regarded name in the beverage service industry, known for its reliable coffee brewers, steeping equipment, and beverage dispensing solutions. These dispensers are designed with efficiency and quality in mind, making them a favorite in restaurants, cafes, and other foodservice establishments.

One of the main features of the Bunn dispenser is its rapid brewing capability. Utilizing a unique brewing system, Bunn dispensers can quickly brew large quantities of coffee, which is essential for high-demand environments. The machines are equipped with advanced heating technology that ensures water is brewed at the optimal temperature for extracting the best flavors from coffee grounds. This feature not only enhances the quality of the beverage but also significantly reduces waiting times for customers.

Another key characteristic of Bunn dispensers is their durability. Built with high-quality materials, these machines are designed to withstand the rigors of a busy kitchen environment. The robust construction ensures a long lifespan, minimizing the need for frequent repairs or replacements. Additionally, many models feature stainless steel components that are resistant to corrosion and easy to clean, maintaining hygiene standards while also looking professional.

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Energy efficiency is another consideration in the design of Bunn dispensers. Many models are equipped with energy-saving features, which help reduce power consumption during both operation and standby modes. This focus on sustainability not only lowers utility costs for businesses but also aligns with the growing consumer demand for environmentally responsible practices.

In conclusion, Bunn dispensers combine speed, durability, versatility, advanced technology, and energy efficiency, making them an excellent choice for any foodservice operation. Their ability to deliver high-quality beverages quickly and consistently makes them a pivotal asset for businesses aiming to provide an exceptional customer experience.