Bunn -O-MATIC ULTRA-1 User Manual

Page 13

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

”) 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”.

FIG 2

FIG 3

Lube about 1

” of shaft and in the

groove with #29563.0000 “Krytox”

Lubricant

Seal Insertion Tool

Open face of seal

away from tool

Cooling Drum Seal

Check for weak

torsion springs

FIG 5

FIG 6

Faucet Seal

P1760

P2529

P3695

P3682

REQUIRED REGULAR MAINTENANCE (Continued)

Auger Shaft Assy

Pins

FIG 4

Cooling Drum

Auger Shaft Bushing

Cooling Drum Seal

Hopper/Drum Seal

Inspect & Clean

41084 102709