CONTROLS
2-3
Model C152 & C161
Controls
2
single-phase and three-phase applications. For this
reason the control must be set to operate in an amperage
range which relates to the beater motor amperage and
the desired product viscosity setting.
The selected amperage range simply determines the
adjustment span of the viscosity adjustment
potentiometer on the logic board. The jumper on the
power board determines the amperage range selection.
The jumper is placed on the pin that corresponds to the
beater motor amperage when the desired product
viscosity is attained.
See Figure 2-4 to locate the range
selection jumper.
Viscosity Control Range Selections
• 2.4 Pin = 1.2 A to 2.4 A
• 5.0 Pin = 2.5 A to 5.0 A
• 8.0 Pin = 4.0 A to 8.0 A
• 11.2 Pin = 5.7 A to 11.2 A
Setting Viscosity Adjustment
1. Place an amp probe on one of the L1 leads on the
beater terminal on the power board.
2. Turn the viscosity adjustment screw to the MAX
position.
3. With the freezer properly primed, actuate the
refrigeration cycle (press the Auto button).
4. During the freezing process, draw a sample and
inspect the product’s appearance. When the desired
viscosity and appearance is achieved, note the
beater motor’s amperage.
5. Cancel the refrigeration cycle (press the Auto
button).
6. Using the chart, set the range that the beater motor’s
amperage falls into and place the jumper on the
proper pin.
Note: See Viscosity Control Range Selections on
page 2-3 for the amperage range.)
7. Press the Auto button. When the previously noted
beater motor’s amperage is achieved, turn the
viscosity adjustment screw counterclockwise slowly
until the machine cycles off.
8. Draw several samples to verify that the following
remain consistent:
• Amperage when the machine cycles off.
• Product quality remains consistent.
Mix Adjustment
The mix setting is the temperature adjustment for the mix
hopper.
The ideal mix temperature is 38ºF to 40ºF
(3.3ºC to 4.4ºC).
The cut-out temperature will always be 4.5ºF (2.5ºC)
lower than the cut-in temperature. (See SB 2474.)
The range for cut-in temperature is approximately 52ºF
(11.0ºC) min. and approximately 36ºF (2.2ºC) max.
Setting the Mix Hopper Temperature
1. To set the mix hopper temperature, fill the hopper at
least half full with approximately 40
ºF (4.4ºC) mix.
2. Install a suction pressure gauge at the evaporator
pressure regulator (EPR) valve and verify the correct
operating pressure. Adjust if necessary.
3. Set the Mix potentiometer to midrange.
Note: For model C161, the temperature adjustment
must be made on the left logic board.
4. Allow the mix hopper refrigeration system to cycle
until the mix temperature is stabilized. Adjust the
setting if necessary.
Standby Adjustment
This adjustment maintains the mix temperature in the
freezing cylinder during long no sale periods to prevent
overheating of the product.
The ideal standby temperature is 30ºF to 35ºF
(-1.1ºC to 1.7ºC).
Cut-out temperature will always be 4ºF (2ºC) lower than
the cut-in temperature.
The range for cut-in temperature is approximately
44ºF (6.6ºC) min. and approximately 30ºF (-1.1ºC) max.
Setting Standby Temperatures
1. With the machine properly primed with fresh mix,
turn the standby adjustment screw to the warmest
position.
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