20
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 second barrel.
9.2 Rear Seal Replacement
1 Turn off the water and syrup supply shutoff valves to the dispenser.
2 Select the barrel by pressing BARREL 1 on the keypad, then the DEFROST button.
3
After the defrost cycle is complete, place a container under the dispensing valve and empty the barrel
by discarding product through the dispenser valve.
Note:
CO
2
solenoids can be manually actuated from Manual ON/OFF menu to aid in emptying product
from barrel.
4 Vent the barrel of all pressure.
5 Remove the faceplate and beater bar. Be sure to catch the remaining liquid from the barrel when
removing the faceplate.
6
With a small pick or corkscrew type seal puller, reach into the back of the barrel and remove the rear
seal (
Figure 9.2
). Discard the used seal.
7
Lubricate the inner diameter on the new seal with Dow Corning 111 lubricant or any other lubricant approved
for food contact.
• DO NOT
lubricate the outer diameter of the seal.
• DO NOT
use a hydrocarbon based lubricant as swelling and premature seal failure will occur.
8
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.
9
Reinstall the beater bar and faceplate.
10 Turn on the water and syrup supply shutoff valves to the dispenser. Complete gas purge, brixing, and
fill barrel processes as outlined in
Sections 6.3
through
6.5
.
Rear seal
Front of barrel with faceplate and
beater bar removed
Figure 9.2 Rear Seal Placement
