Cornelius R-454C, Manual

Page: 19 / 111

Viper Installation, Service & Decommissioning Manual
Publication Number: 620073146SER
- 16 - © 2022, Marmon Foodservice Technologies Inc.
!
WARNING:
In Step 1 , when purging is complete, disconnect electrical power from the unit. Failure to disconnect the power could result
in serious injury, death, or equipment damage.
Table 5.
Step Action
1. Defrost freeze cylinders, shut unit down, disconnect electrical power from Unit.
2. Perform the procedure in Table 7 to empty the barrels.
3.
Remove the hex nuts and flat washers securing the faceplate to the freeze barrel, then remove the faceplate from the
barrel.
4. Carefully remove the large o-ring from the faceplate.
5. Unscrew the relief valve from the faceplate.
6. Disassemble the dispensing valve (Figure 12.).
7. Remove ice ball grate from faceplate, if applicable
8.
Remove the two screws and hold-down plates securing the spring housing to the dispensing valve body, then remove
the housing.
9. Remove the torsion spring from the dispensing valve.
10. Remove the knob, spring, sleeve, and lever from the dispensing valve.
11. Remove spring fitting from dispensing valve.
12. Press the valve with the caged O-ring, down and out of the dispensing valve body.
13. Carefully remove the caged O-ring from the valve.
14.
Wash all the parts in warm water. Remove all traces of syrup and lubricant, especially from the faceplate, o-rings, ice
ball grate (if applicable), and dispensing valve. If parts are excessively coated, wipe clean with a paper towel to remove
excess syrup and lubricant, especially from caged o-ring and dispensing valve. Use a brush (provided with the unit) to
clean the faceplate relief valve passages.
15.
Submerge all the parts in a sanitizing solution according to the suggested sanitizers above for 10 minutes (no more
than 15 min).
16. Remove the parts from the sanitizing solution and place them on clean paper towels.
17. Assemble the dispensing valve. Rinse them with warm water, and place them on clean paper towels.
18.
Lubricate the caged o-ring. Carefully install the caged o-ring onto the valve from the straight end (opposite tapered
end). Lubricate the grooves that the o-ring rides to fill in all void areas around the o-ring.
19. Carefully install the valve with the caged o-ring in the dispensing valve body.
20.
Install the spring fitting, knob and lever parts, torsion spring and spring housing assembly by reversing the removal
procedure. Do not tighten down the hold-down plates securing the spring housing at this time.
21.
After re-installing the faceplate, turn the dispensing valve spring housing to the left (counterclockwise) to put tension
on the tension spring. Apply just enough tension so that the dispense valve shaft returns to the closed position after
release. Do not over-tighten. Overtightening results in a high activation force on the valve.
NOTE: Use Dow-Corning DC-111 (P/N 321471000) light grade silicone lubricant to lubricate the O-rings.