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Why
Tuning?
When
dry mix and water are combined to make batter,
they must be added in the correct proportion
to achieve a desired viscosity. Too much
water will make the batter thin and too
little water will make the batter thick.
Your goal is to find the correct mix (balance)
of dry mix and water for each of your batters
and maintain that balance throughout a production
period.
When
in "automatic", the Wilevco mixer
is designed to maintain your viscosity (balance)
to within 1.5 points of the set reference
point on the chart or digital readout.
In
a Wilevco mixer the amount of dry mix being
added cannot be changed but the water rate
can. “Tuning the Mixer” is the
way for you to find out what the water flow
rate setting should be, in GPM, for each
of your batters (therefore finding your
balance). A properly “tuned” mixer
will consistently deliver batter that will
help you achieve your pick-up percentage
goals. You should check that your mixer
is in “tune” periodically and
each time you change products.
To
carry out the tuning procedure you should
be familiar with the locations of the switches,
the water flow rate gauge and the water
flow rate valve on the mixer.
How
to tune the mixer:
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1.
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After
start up and having reached your batter’s
correct viscosity, note the position/
number value of the red pen on the
chart or the number value on the digital
readout.
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2.
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Switch
the mixer to manual.
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3.
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Manually
turn both solids and liquids on at
the same time and note the water flow
rate.
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4.
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Let
them run for approximately 45 to 60
seconds then shut them off.
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5.
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Wait
a minute for the new batter to blend
with the existing batter.
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6.
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Observe
how the red pen or digital read out
reacts during this period.
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7.
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If
the pen moves up the chart more than
one or two points or the digital readout
rises more than one or two points,
the batter is getting thicker, which
means you are not adding enough water.
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8.
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To
correct this, turn the water flow
rate up, no more than ¼ GPM,
then repeat steps 3-6.
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9.
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If
the pen moves down the chart or the
digital read out decreases, the batter
is becoming thinner, which means you
are adding too much water.
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10.
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To
correct this, turn the water flow
rate down, no more than ¼ GPM,
then repeat steps 3-6.
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11.
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The
goal is for the red pen or digital
readout to remain at the same position
throughout the tuning procedure, therefore
holding steady throughout the production
period.
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Fine
Tuning:
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1.
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Fine
tuning may be needed occasionally and
can be accomplished after the mixer
has been “tuned” and while
the mixer is in "automatic".
Observe how the red pen or digital readout
performs during a filling cycle. If
the pen or digital readout rises slightly
during this period, tweak the water
flow rate up. If the pen or digital
readout falls slightly during this period,
tweak the water rate down. |
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