REQUIRED REGULAR MAINTENANCE (Continued)

6.Pull the auger shaft assembly straight out of cooling drum. Inspect the shaft for abnormal wear.

7.From the front of dispenser, remove the seal and blue bushing from cooling drum and discard them.

8.Inspect inside of the coling drum from the rear for product leakage and clean thoroughly with an extended bristle brush (Bunn part no. 40500.1068) and warm sanitize solution, rinse and dry with a towel. Clean the front seal/bushing area of the cooling drum thoroughly with the bristle brush. Refer to Fig. 4 for areas to be cleaned.

9.Refer to FIG 1, and slip new blue bushing into cooling drum.

10.Place seal on insertion tool #28395.0000 as shown in FIG 2. Make sure open face of seal is toward cooling drum.

11.Apply a small amount of food grade lubricant (Bunn #M2568.1000) to inside diameter of seal. Push seal into bore until it is firmly seated; remove tool.

12.Place a small amount of #29563.0000 “Krytox” lubricant

(provided in kit in a plastic cap) on the end of the motor shaft (about 1 1/2”) and a thin film in the groove. Install auger shaft assembly onto the motor shaft. See FIG 3. Do not use too much “Krytox” lubricant. Dirt or grease on pins will cause “optical” misreading by torque sensors.

NOTE: This is the only place “Krytox” lubricant is used.

13.Assemble motor/shaft assembly as shown in FIG 3, then install assembly into cooling drum. Make sure the pins do not hit the sensor board and cooling drum seal is not dislodged as the shaft passes through.

14.Secure motor and capacitor to the cooling drum mounting bracket. Install rear motor cover.

15.Refer to the hopper assembly and installation procedures. Install new hopper/drum seals and faucet seals included in the kit. See FIG 1 & 5.

16.Remove and clean condenser air filter. See FIG 6.

17.Refer to the Programming Manual, “Menu Function Index”. Scroll to menu “PM Complete?” and answer “YES” to reset the reminder message “PM Due”.

Open face of seal

away from tool

Cooling Drum Seal

Seal Insertion Tool

P1760

FIG 2

Check for weak torsion springs

Pins

Auger Shaft Assy

Lube about 1 1/2” of shaft and in the groove with #29563.0000 “Krytox” Lubricant

P2529

FIG 3

Hopper/Drum Seal

Inspect & Clean

Cooling Drum

 

 

 

Auger Shaft Bushing

Faucet Seal

 

 

Cooling Drum Seal

 

P3695

P3682

FIG 4

FIG 5

FIG 6

 

 

 

13

41084 102709

 

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Bunn ULTRA-1 manual Required Regular Maintenance
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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.
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