Sanitizing; Freeze Down And Operation - Stoelting U431 I2 Owner's/Operator's Manual

When sanitizing the machine, refer to local sanitary regu-
lations for applicable codes and recommended sanitizing
products and procedures. The frequency of sanitizing
must comply with local health regulations. Mix sanitizer
according to manufacturer's instructions to provide a 100
parts per million strength solution. Mix sanitizer in quanti-
ties of no less than 2 gallons of 90°F 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 instructions.
CAUTION
Risk of Product Damage
Avoid prolonged contact of sanitizer with machine
parts. Sanitizer may cause corrosion of stainless
steel parts if there is prolonged contact.
A. Prepare 3 gallons of sanitizing solution following
manufacturer's instructions, and pour it into the
storage container.
B. Make sure the display shows the freezing cylinder
is off. If it is not, press the On/Off Left or On/Off
Right button to turn it off.
If the freezing cylinder is not off, the control will
not go into Clean mode. This is to protect from ac-
cidentally going into Clean mode.
C. Press the Pump button to turn the pump ON
and open the air bleed valve on the front door
by pushing the valve in and holding (see Figure
3-8).
Air Bleed
Valve
Figure 3-8 Air Bleed Valve
D. Let sanitizing solution fi ll the freezing cylinder to
the air bleed valve, then close the valve by pulling
it out to lock in place.
Owner's Manual #513660
NOTE
E. Press the CLEAN button to start the auger rotating.
F. Check for leaks when the freezing cylinder is fi rst
pressurized with sanitizing solution.
1. Check for leaks at the front door seals.
2. Check the drain tray located in the front panel
for leaks coming from the rear of the rear auger
seal.
3. Check the inside of the cab unit for leaks at
the hose connections.
G. Use a sanitized soft bristle brush dipped in
sanitizing solution to clean the mix container.
H. After fi ve minutes, open the spigot to drain the
sanitizing solution.
I. When the solution has drained, press the Pump
and Clean buttons to stop the pump and auger.
Allow the freezing cylinder to drain completely.
The machine is now sanitized and ready for adding mix.

3.9 FREEZE DOWN AND OPERATION

Refer to the following procedures to operate both freez-
ing cylinders.
A. Sanitize immediately before use.
B. Make sure the display shows the freezing cylinder
is off. If it is not, press the On/Off Left or On/Off
Right button to turn it off.
C. Fill the storage containers with at least 3 gallons
of mix.
D. Attach the mix inlet probe to the container and
place the container in the refrigerated cab.
E. Press the Pump button to turn the pump on.
F. Place a container under the spigot and open the
spigot to allow the mix to fl ush out about 8 ounces
(0.23 liters) of sanitizing solution and liquid mix.
Close the spigot.
G. Open the air bleed valve on the front door by
pressing and holding. Hold the valve open until
the mix level in the freezing cylinder is 1/2" from
the air bleed valve.
H. Press the On/Off button for the cylinder.
I. Press the PUSH TO FREEZE button.
13 U431 I2 Model Machines