6-8
OPERATING PROCEDURES
Models 750, 751, 754, 774, 791, and 794
Operating Procedures
6
9. Assemble the hopper gasket around the top edge of
the mix hopper. Stand the air tube in the corner of the
hopper.
Figure 6-28
10. Repeat Step 1 through Step 9 for the other side of
the freezer on Models 754, 774, 791, and 794.
Priming
1. With a pail beneath the door spout, lower the draw
handle. Make sure the prime plug is still in the up
position. Pour 2 gal. (7.6 L) 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 mix is flowing full-strength from the door spout,
raise the draw handle.
Note: Use only fresh mix when priming the freezing
cylinder.
Figure 6-29
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 6-30
3. Lubricate the O-rings on the air tube on the end with
the small hole on the side.
4. Install the air tube (the end with the hole) with the air
orifice installed into the mix inlet hole in the mix
hopper.
5. Press the AUTO button. 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 light will come on, indicating the mix refrigeration
system is operating to maintain the mix in the mix
hopper.
Figure 6-31
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.
7. Place the mix hopper cover in position over the mix
hopper.
8. Repeat step 1 through step 7 for the other side of
the freezer on Models 754, 774, 791, and 794.