Sanitizing; Initial Freeze Down And Operation; Figure 19 Air Bleed Valves; Figure 20 Draining Sanitizer - Stoelting U431 Owner's Manual

3.9 SANITIZING

Sanitizing must be done after the freezer is clean and just
before the freezer is filled with mix. Sanitizing the night
before is not effective. However, you should always clean
the freezer and parts after using it.
WARNING
The United States Department of Agriculture and
the Food and Drug Administration require that
all cleaning and sanitizing solutions used with
food processing equipment be certified for this
use.
When sanitizing the freezer, refer to local sanitary regula-
tions for applicable codes and recommended sanitizing
products and procedures. The frequency of sanitizing must
comply with local health regulations. Mix sanitizer ac-
cording to manufacturer's instructions to provide a 100
parts per million strength solution. Mix sanitizer in quan-
tities of no less than 2 gallons of 90°F to 110°F 90° to
110°F (32°C to 43°C) water. Allow sanitizer to contact the
surfaces to be sanitized for 5 minutes. Any sanitizer must
be used only in accordance with the manufacturer's in-
structions.
Air Bleed Valves
Figure 19. Air Bleed Valves
CAUTION
Risk of Product Damage
Avoid prolonged contact of sanitizer with freezer parts.
Prolonged contact of sanitizer with freezer may cause
corrosion of stainless steel parts.
A. Prepare 3 gallons of sanitizing solution following
manufacturer's instructions, and pour into storage
container.
B. Place the mix pump switch in the ON position and
open air bleed valve on the front door by pushing
valve in and holding (see Figure 19).
C. Let sanitizing solution fill the freezer barrel to air bleed
valve, then close the valve by pulling out to lock in
place.
D. Place the CLEAN-OFF-SERVE toggle switch in
the ON position while pressing the CLEAN switch.
Figure 20. Draining Sanitizer
E. Check for leaks when the freezer barrel is first
pressurized with sanitizing solution.
1. Check for leaks at the plastic front door, the
O-rings may not be sealed.
2. Check the drain located at the center of the
Drip Tray for leaks coming from the rear of the
Rear Auger Seal.
3. Check inside cab unit for leaks at hose connec-
tions.
F. Using a sanitized soft bristle brush or equivalent,
dipped in sanitizing solution, clean mix container.
G. After five minutes, open spigot to expel sanitizing
solution. Drain all solution from freezer using all three
spigots (See Figure 20).
H. Close the spigot and place the mix pump switch
and the CLEAN-OFF-SERVE switch in the OFF
position.
The freezer is now sanitized and ready for adding mix.

3.10 INITIAL FREEZE DOWN AND OPERATION

This section covers the recommended operating proce-
dures to be followed for the safe operation of the freezer.
A. Sanitize just prior to use according to instructions
outlined in this manual.
B. Prepare the desired amount of mix and then fill each
storage container with approximately 3 gallons or
more of mix. Place a container(s) of mix in the re-
frigerated cabinet. If drawing from a storage container,
place the draw tube through the cover to the bottom
of the container. If drawing from a bag in a box, re-
move the cap, push out all of the air, and insert the
adaptor.
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