28
Models 750, 751, 754, 774, 791, 794
Operating Procedures
Step 9
Assemble the hopper gasket around the top edge of
the mix hopper. Stand the air tube in the corner of the
hopper.
Figure 32
Repeat steps 1 through 9 for the other side of the
freezer on Models 754, 774, 791, and 794.
Priming
Step 1
With a pail beneath the door spout, lower the draw
handle. Be sure the prime plug is still in the UP
position. Pour two gallons (7.6 liters) of fresh mix into
the mix hopper and allow it to flow into the freezing
cylinder. This will force out any remaining sanitizing
solution. When full strength mix is flowing from the
door spout, raise the draw handle.
Note: Use only fresh mix when priming the freezing
cylinder.
Figure 33
Step 2
Once a steady stream of mix starts to flow from the
prime plug opening in the bottom of the freezer door,
push down the prime plug.
Figure 34
Step 3
Lubricate the o
−
rings on the air tube on the end with
the small hole on the side.
Step 4
Install the air tube (the end with the hole) with the air
orifice installed into the mix inlet hole in the mix hopper.
Step 5
Press the AUTO key. The AUTO light will come on
indicating the main refrigeration system is operating.
When the unit cycles off, the product will be at serving
viscosity.
Note: On Models 751, 754, 774, 791, and 794 the
MIX REF light will come on, indicating the mix
refrigeration system is operating to maintain the mix in
the mix hopper.
Figure 35
Step 6
Fill the hopper with mix. As the mix level comes in
contact with the mix level sensing probe on the rear
wall of the hopper, the MIX LOW light will shut off.
