SERVICE (cont.)

MEMBRANE SWITCH (ULTRA-2)

FIG. 53 MEMBRANE SWITCH

Location:

The membrane switch is located on the front panel.

Test Procedures:

NOTE: Before continuing, check that the ribbon cable is properly connected to the control board and not a pin off in either direction.

1.Disconnect the dispenser from the power source.

2.Remove the right and left side panels.

3.Remove the front panel and disconnect ribbon cable.

4.Check for continuity of the switches using pin #7 as common.

#7 - #1 (shield) no continuity #7 - #2 (Left Auger)

#7 - #3 (I/O)

#7 - #4 (not used)

#7 - #5 (Left ICE/CHILL/OFF) #7 - #6 (ULTRA)

#7 - #8 (GOURMET) #7 - #9 (not used) #7 - #10 (ICE)

#7 - #11 (Right Auger)

#7 - #12 (Right ICE/CHILL/OFF)

If continuity is not present when the appropriate switch is pressed, the Membrane Switch must be replaced. If continuity is present, chech the short harness going to J2 on the Control Board.

49

Removal and Replacement:

1.Disconnect the dispenser from the power source.

2.Remove right and left side panels.

3.Remove front panel and disconnect ribbon cable.

4.Peel the old Membrane Swith off the front panel and discard. Clean any remaining adhesive from front panel with mineral spirits and then alcohol.

5.Remove protective paper backing from back side of new Membrane Switch.

6.Guide ribbon cable through narrow slot in panel. Carefully position new Membrane Switch on panel, while centering display window to opening.

7.Refer to Fig. 54 and connect the ribbon cable to the chort harness from the Control Board.

NOTE: The black wire should correspond to the #1 printed on the clear portion of the cable.

 

 

GOURMET

MEMBRANE

 

I/O

ULTRA

SWITCH

 

 

ICE

12

 

 

 

 

 

 

1

 

 

 

SHIELD

 

 

LEFT

 

RIGHT

 

 

FIG. 54 MEMBRANE SWITCH

 

1

FIG. 55 MEMBRANE SWITCH

and RIBBON CABLE

41084 102709

Page 49
Image 49
Bunn ULTRA-1 manual Membrane Switch ULTRA-2, Ribbon Cable

ULTRA-1 specifications

The Bunn ULTRA-1 is a state-of-the-art coffee brewing system designed for commercial use, offering an unmatched combination of speed, efficiency, and flavor extraction. This single-serve coffee brewer is tailored for businesses that require high-quality coffee brews in a fast-paced environment, such as cafes, restaurants, and office kitchens.

One of the standout features of the Bunn ULTRA-1 is its ability to brew up to 14 different cup sizes, accommodating various customer preferences. This flexibility allows operators to serve everything from small espresso shots to larger coffee servings, making it a versatile addition to any beverage-serving establishment. At the heart of this brewing system is Bunn's patented brewing technology, which ensures precise water temperature and ideal brew time, optimizing the extraction process for a full-bodied flavor profile.

The ULTRA-1 is equipped with a large, easy-to-read LCD screen that provides real-time feedback, allowing users to monitor brewing progress, select cup sizes, and customize brewing parameters. This intuitive interface simplifies operation, reducing the learning curve for new staff members and enhancing overall efficiency during peak hours.

Another innovative aspect of the Bunn ULTRA-1 is its advanced thermal carafe system, which keeps brewed coffee at the optimal serving temperature without the need for a traditional warming plate. This technology helps preserve the coffee's rich flavor and aroma by preventing it from becoming bitter or stale due to prolonged exposure to heat.

The ULTRA-1 emphasizes ease of maintenance with its removable brew chamber and drip tray, allowing for quick cleaning and routine upkeep. Additionally, the brewer features a self-diagnostic system, alerting operators to any potential issues, further minimizing downtime.

From its sleek design to its robust construction, the Bunn ULTRA-1 combines aesthetics and durability, making it a reliable choice for any coffee-centric business. The compact design ensures it can fit on counters without taking up excessive space, while its stainless steel components provide longevity and resistance to wear and tear.

In conclusion, the Bunn ULTRA-1 stands out in the crowded market of commercial coffee brewers due to its advanced technology, versatility, and user-friendly features. It is designed to meet the demands of modern coffee service while ensuring that every cup brewed meets the highest standards for taste and quality.