Vollrath F431 - Manual (Page 24)

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3.11 NORMAL FREEZE DOWN AND
OPERATION
The following section contains the recommended oper-
ating procedures for the safe operation of the machine.
1. Sanitize immediately before use.
2. Make sure the Freezing Cylinder OFF/ON switch
is in the OFF position.
3. Fill the storage containers in the cab with at least
2.5 gallons of mix.
4. Attach the mix inlet probes to the container and
place the containers in the refrigerated cab.
5. Place the mix pump switch in the ON position.
6. 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.
7. 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.
8. Place the Freezing Cylinder OFF/ON switch in
the ON position.
NOTE
After the drive motor starts, there is a 3-second
delay before the compressor starts.
9. Press the PUSH TO FREEZE button.
10. When the product is at 75% consistency, the
display will read “SERVE”.
11. For normal dispensing, move the spigot handle
fully open.
12. The machine dispenses product at a reasonable
draw rate. If the machine is overdrawn, the result
is a soft product or a product that will not dispense
at all. If this occurs, allow the machine to run for
approximately 30 seconds before dispensing
more product. Spigot rate adjustors are located
under the header panel, to the immediate right of
each spigot handle (Fig. 3-14). Turning the spigot
rate adjuster counterclockwise will decrease the
dispense rate.
13. Do not operate the machine when the MIX LOW
message is displayed or with less than 1-3/4"
(4.4 cm) of mix in the hopper. Refi ll the hopper
immediately.
NOTE
The machine has a standby and sleep mode. After
a preset number of freezing cycles, it will enter the
standby mode (followed by sleep mode) and remain
there until someone draws product or presses the
PUSH TO FREEZE button. In the sleep mode, the
machine will keep the product below 41°F (5°C).
Sleep modes do not take the place of cleaning
and sanitizing. Federal, State, and local regulatory
agencies determine frequency of cleaning and
sanitizing.
3.12 MIX INFORMATION
Mix can vary considerably from one manufacturer to
another. Differences in the amount of butterfat content
and quantity and quality of other ingredients have a
direct bearing on the fi nished frozen product. A change
in machine performance that cannot be explained by a
technical problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’s mix to another. Mixes should provide a
satisfactory product in the 17° to 20°F (-7° to -6°C) range.
Diet and low-carb mixes typically freeze to proper con-
sistency at higher temperatures.
When checking the temperature, stir the thermometer in
the frozen product to read the true temperature.
Old mix, or mix that has been stored at too high a tempera-
ture, can result in a fi nished product that is unsatisfactory.
To retard bacteria growth in dairy based mixes, the best
storage temperature range is between 36° to 40°F (2.2°
to 4.4° C).
Figure 3-14 Dispensing Product
Dispense
Rate
Adjustors
CAUTION
Risk of Product Damage
Mix pump hose must be repositioned every 800 gal-
lons of mix served or 2 weeks. Failure to comply will
result in reduced mix pump liquid capacity, dispense
stoppage, popping, and possible mix pump hose
leakage. Hose leakage may damage the pump roller
assembly and void the factory warranty