Pellerin Milnor Corporation 39
3.3.2 Program a Cooldown
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A cooldown is programmed as a separate bath step following the bath in which the cooldown is
desired. There is no explicit step decision for a cooldown. A cooldown occurs automatically in a
step if the formula meets the following criteria:
• The cooldown step follows a high-temperature step, usually a steam step; the cooldown step
cannot be the first step.
• The high-temperature bath step before the cooldown step is programmed with:
– A step type = 1-Way Wash or 2-Way Wash
– A non-zero temperature
– A drain type = Do Not Drain
– A bath level lower than Level 3
• The cooldown step after the previous (high-temperature) bath step is programmed with:
– A step type = 1-Way Wash or 2-Way Wash
– A non-zero temperature lower (cooler) than the temperature of the previous (high-temper-
ature) bath step
– All water valves (HOT, COLD, 3
rd
) set to OFF
– A Level 3 bath level, or a bath level higher than the bath level of the previous step
NOTE: The programmed cooldown temperature must always be at least 15 degrees
Fahrenheit (8 degrees Celsius) hotter than the hottest ambient temperature or the hottest
cold water temperature that will be encountered. If this rule is not followed, it may take a
long time to achieve the desired cooler temperature, or even be impossible.
3.3.3 The Cooldown Sequence
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The cooldown step begins after the high-temperature bath step in which the cooldown is desired.
It performs the following sequence of actions:
1. The cooldown valve opens. On the Run display, the
icon illuminates in the Machine
Status area.
NOTE: See the operator guide for instructions on how to interpret and use the Run
display.
2. The water temperature falls and the water level rises, as indicated on the Machine Status
area.
3. When the high water level is achieved, the cooldown valve closes. The
icon extinguishes
in the Machine Status area.
4. The drain valve opens.
• The water drains to the sewer and the
icon illuminates in the Machine Status area.
Formula Maintenance
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