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Model 428 Operati ng Procedures
050415
Priming the Freezing Cylinder
Step 1
With a pail beneath the door spout, move the draw
handle to the right. Pour two gallons (7.6 liters) of
FRESH mix into the hopper and allow it to flow into the
freezing cylinder. This will force out any remaining
sanitizing solution. When fu ll str ength mix is flowing
from the door spout, mov e the draw handle to the left .
Step 2
When mix has stopped bubbling downintothe freezing
cylinder, install the air/m ix feed tube (optional) in the
mix inlet hole with the hole side down.
Figure 41
Step 3
Place the power swit ch in the AUTO position. When
the unit cycles off, the product will be at serving
viscosity. The viscosity (thickness) of the produc t can
be adjusted by turning the viscosity adjustment screw
on the upper right side under the display light. Turn the
viscosity adjustment screw clockwise for a thicker
product, or c ounterclockwis e for a thinner product.
Afte r making an adjustment, allow the refrigeration
system to cycle 2 or 3 times to accurately evaluate the
viscosity.
Figure 42
Step 4
Self--Closing Door Only: Loosen the prime plug.
When product starts toleakfromthebleed port, tighten
the prime plug. Allow the product to continue filling the
mix hopper until the upper mix level probe is satisfied
and the fill system shuts off.
Figure 43