Bunn POWDER AUTO FILL service manual Door Switch

Page 30

SERVICE (cont.)

DOOR SWITCH

ACTUATOR

P1934

FIG. 28 DOOR SWITCH

Location:

The door switch is located on the right side panel under the housing top cover.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the twelve pin connector (J1) from the control board.

3.Check continuity between pins 8 & 9 on the wiring harness using an ohmmeter. Continuity must be present when the door is closed. Continuity must not be present when the door is open.

4.Reconnect the twelve pin connector to the control board.

5.Gain access to the door switch using steps listed in Removal and Replacement.

6.Disconnect the wires from the door switch.

7.Check continuity between the N.O. and COM. termi- nals of the switch using an ohmmeter. Continuity must be present when the actuator is engaged. Continuity must not be present when the actuator is released.

If continuity is present as described, refer to wiring diagram and check the dispenser wiring harness.

If continuity is not present s described, replace the door switch.

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove the hopper assembly from the dispenser.

3.Remove the dispenser from the CDS machine and place it on a flat work surface.

4.Disconnect the door lamp cord from the lamp connector.

5.Remove the two #8-32 screws securing the door hinge to the dispenser housing.

6.Carefully pull the door forward until the door sup- port arms come completely out of the dispenser housing and set aside.

7.Remove the six #8-32 truss head screws securing the rear cover to the dispenser housing.

8.Remove the six #8-32 round head screws securing the front of the housing to the side panels.

9.Remove the six #8-32 truss head screws securing the back of the housing to the side panels.

10.Carefully lift and spread the housing to remove it from the rest of the dispenser.

11.Remove the door switch actuator from the nylon standoff.

12.Noting the orientation of the door switch, remove the two #6-32 screws and the nylon standoff secur- ing the switch mounting bracket to the dispenser housing. Remove the switch.

13.Attach the new door switch taking care to orient the switch correctly in the mounting bracket and se- cure in place with two #6-32 screws and nylon standoff.

14.Reconnect the wires to the door switch. Refer to Fig. 29.

15.Install the door switch actuator orienting the notched side against the right side housing panel. Refer to Fig. 28.

16.Reassemble the dispenser top housing, rear panel, and door assembly to the dispenser.

 

ORA to Control

 

Board (J1-9)

 

GRN to Control

 

Board (J1-8)

 

P1908

 

FIG. 29 DOOR SWITCH TERMINALS

30

29793 061599

 

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Contents Bunn Powder Auto Fill Warranty Initial SET-UPIntroduction User Notices Operating Instructions Adjustments Cleaning Recommended Daily Cleaning and Maintenance TipsRinse and dry each item thoroughly before reas- sembling Dispense Fault ListNormal operation Powder Auto-Fill ready to Door not closedTroubleshooting Problem Probable CauseProblem RemedyCDS product tastes watery or sugary Problem Probable Cause Remedy Install a regulator if necessary to Procedures. SeeImproper adjustment of product Product overflows CDS hopper Control Board and ProbeService Component AccessRetainer Clip Auger Drive ComponentsHopper Lid 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 boardTEST/SERVICE Switch Disconnect the wires from the switch terminalsLocation Main Power ON/OFF Switch Main Power ON/OFF SwitchLamp Cord Assembly Refer to when reconnecting the wiresLamp Cord Connector Disconnect the lamp cord from the lamp cord connectorRemove new nut and washer from new 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 PAF BLK REDWiring Diagrams Schematic Wiring Diagram Pafa

POWDER AUTO FILL specifications

The Bunn Powder Auto Fill is a cutting-edge coffee brewing system designed to enhance efficiency and precision in commercial environments. This innovative machine simplifies the brewing process by incorporating automated features that ensure consistent quality and optimal performance.

One of the standout features of the Bunn Powder Auto Fill is its ability to automatically dispense powdered beverage mixes. This is made possible through advanced technology that streamlines the process, reducing the need for manual input. With the push of a button, operators can quickly prepare a variety of specialty beverages, including cappuccinos, lattes, and flavored coffee drinks. This not only saves time but also minimizes the likelihood of human error in measurements, ensuring each cup is consistently brewed to perfection.

The Bunn Powder Auto Fill is designed with versatility in mind. It accommodates a wide range of powdered ingredients, allowing businesses to offer an extensive menu without investing in multiple machines. This adaptability makes it an ideal solution for coffee shops, convenience stores, and other establishments where customer preferences may vary.

Moreover, the machine features a robust heating system that provides rapid brewing capabilities. This ensures that beverages are served at the optimal temperature, enhancing the overall customer experience. The integrated hot water faucet allows for quick access to hot water, making it easy to prepare additional drinks or even food items like soups and oatmeal.

Durability is another key characteristic of the Bunn Powder Auto Fill. Built with high-quality materials to withstand the rigors of daily use, this machine is designed to deliver reliable performance over time. Its compact and sleek design allows for easy placement in any setting, taking up minimal counter space while blending seamlessly with existing décor.

Additionally, the Bunn Powder Auto Fill incorporates user-friendly controls and displays. This intuitive interface allows staff to quickly familiarize themselves with the machine's operation, which is crucial in high-demand environments. The system also features programmable settings, enabling users to customize brew strengths and portion sizes according to customer preferences.

In conclusion, the Bunn Powder Auto Fill is a game-changer for businesses looking to elevate their beverage offerings. With its automation, versatility, reliability, and user-centric design, this machine not only boosts efficiency but also enhances the quality of every cup served. Whether in a bustling café or a busy convenience store, the Bunn Powder Auto Fill stands out as a smart investment for any beverage-focused establishment.
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