Vollrath U421 Water Cooled - Manual (Page 26)

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Figure 24. Spring Installation Figure 25. Front Door Assembly
E. Install first flights to bottom of auger, rotate, add
successive flights from bottom as the auger is pushed
slowly into the freezer barrel. Carefully engage auger
with drive socket in speed reducer by rotating auger
slowly and pushing on end of auger.
F. Apply a thin film of sanitary lubricant to the inside and
outside of the front auger support bearing, then place
on the front of the auger. Assemble the front auger
support onto the auger bearing.
NOTE
Position the front support on auger so legs do not
interfere with the pin on the back of the front door
assembly. Front door must push auger in slightly
when it is being tightened to prevent the rear seal
from leaking.
G. Assemble "O" rings onto the spigot dry, without
lubrication. Then apply a thin film of sanitary lubricant
to the outside of the "O" rings and spigot body.
H. Install the spigot through the bottom of the front
door. Figure 25.
I. Assemble the air bleed valve "O" ring onto the air
bleed valve. Position the "O" ring in groove close to
the wide part. Apply a thin film of sanitary lubricant to
the "O" rings.
J. Insert the air bleed valve from the back of the front
door. Install compression springs onto air bleed
valve, then screw on knob finger tight.
K. Apply a thin film of sanitary lubricant to the door seal
"O" ring, and fit into the groove on the rear of the
front door.
L. Place the front door assembly on the mounting studs
and push front door against the freezer carefully.
M. Secure front door assembly by placing the knobs on
the studs and tighten evenly until finger tight only.
Do not overtighten. Proper "O" ring seal can be
observed through the transparent front door.
N. Move the spigot handle to the closed position.
NOTICE
When the spigot handle is in the closed position,
the spigot switch lever must be pushed to the left
against the stop.