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 |
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Auger Shaft Bushing | Faucet Seal |
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Cooling Drum Seal |
| P3695 | P3682 | |
FIG 4 | FIG 5 | FIG 6 | ||
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13 | 41084 102709 |
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