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37X INSTALLATION & OPERATION MANUAL
372/373 MODEL
18
9.2 Rear Seal Replacement
The motor rear seals must be replaced annually. Failure to do so can result in rear seal leaks and potential motor failures.
If the dispenser has been in storage for longer than 90 days, FBD recommends that the rear seals be replaced. The rear
seal can be replaced from the front of the dispenser. The barrel must be drained and the faceplate removed to access the
seal. The following process describes the procedure for one barrel. Repeat for all barrels.
Rear Seal
Front of Barrel (faceplate and
beater bar removed)
1
On the home screen press the up or down arrow until the barrel to be sanitized is highlighted.
Press the green button and then select OFF. Press the green button again and select DEFROST.
2
After the defrost cycle is complete, navigate to the MAINTENANCE MENU and start the DRAIN
BARREL process. Follow the prompts until the barrel is empty and then end the process.
3
Vent the barrel of all pressure.
4
Remove the faceplate and beater bar. Be sure to catch the remaining liquid from the barrel when
removing the faceplate.
5
With a small pick or corkscrew type seal puller, reach into the back of the barrel and remove the
rear seal (
Figure 9.1
). Discard the used seal.
6
Lubricate the inner diameter on the new seal with Dow Corning 111 lubricant or any other NSF
approved lubricant.
•
DO NOT lubricate the outer diameter of the seal.
•
DO NOT use a hydrocarbon based lubricant as swelling and premature seal failure will
occur.
7
Reinstall the seal with the “V” groove facing the product chamber. Ensure the rear seal is firmly
seated by checking to make sure it is flushed with the back of the barrel.
8
Reinstall the beater bar and faceplate.
9
Return to the MAINTENANCE MENU and start the GAS PURGE process followed by the FILL BARREL
process.
Figure 9.1 Rear Seal Placement
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