Vollrath U421 Water Cooled - Manual (Page 22)

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To disassemble the freezer, refer to the following steps:
A. Disassembly Of Front Door.
1. Remove the front door by turning off the circular
knobs and then pulling the front door off the studs.
CAUTION
HAZARDOUS ROTATING BLADES-DO NOT OP-
ERATE UNIT WITH FRONT DOOR OR SPIGOT
REMOVED.
2. Remove the air bleed valve by unscrewing the knob
while holding the valve stem from behind. Remove
the compression spring and push air bleed valve
through the rear of the front door.
3. Remove the spigot through the bottom of the front
door. Figure 17.
Figure 18. Auger Flight Removal
Figure 19. Rear Seal Removal
B. Disassembly Of Auger
1. Remove the front auger support by pulling it
straight out of the freezer barrel.
2. Remove the plastic bearing from the front auger
support.
3. Remove the auger by pulling slowly and rotating
out of the freezer barrel. As the auger is with
drawn, remove each plastic flight and spring from
the auger. Figure 18.
NOTE
Be careful not to scratch inside of freezer barrel when
removing flights or auger.
4. Keep the rear of the auger tipped up once it is
clear of the freezer barrel.
5. Wipe spline lubricant off hex end of auger with a
paper towel.
6. Remove the rear seal. Figure 19.
3.10 ROUTINE CLEANING
It is recommended that a maintenance schedule be fol-
lowed to keep the freezer clean and operating properly.
A. Cleaning and Sanitizing Information
Soft serve freezers require special consideration
when it comes to food safety and proper cleaning
and sanitizing.
The following information has been compiled by
Purdy Products Company, makers of Stera-Sheen
Green Label Cleaner/Sanitizer and specifically
covers issues for cleaning and sanitizing frozen
dessert machines. This information is meant to
supplement a comprehensive food safety program.
Soil Materials Associated with Frozen Dessert
Machines
MILKFAT/BUTTERFAT – As components of ice-
cream/frozen custard mix, these soils will
accumulate on the interior surfaces of the machine
and its parts. Fats are difficult to remove and help
attribute to milkstone build-up.
MILKSTONE – Is a white/gray film that forms on
equipment and utensils that come in contact with
dairy products. These films will accumulate slowly
on surfaces because of ineffective cleaning, use of
hard water, or both. Milkstone is usually a porous
deposit, which will harbor microbial
contaminants and eventually defy sanitizing
efforts.
Figure 17. Front Door Disassembly