Control Operation Overview Chore-Tronics® 2 Control
60
MT1843B
Cool Pad Function
The COOL PAD output is very different from a COOL output. It is not intended
that the COOL PAD output and the COOL output would be used together, but it
is possible. Both outputs are there to give the user the choice on which type of
output to use. The COOL PAD's relay operation is designed to begin the cooling
caused by the cooling pad by first adding 5 seconds of water to the pad every 5
minutes. If the temperature is still with the "Cool Pad Range" after 4 doses of 5
seconds of water, the amount of water added to the pad every 5 minutes remains
the same. If the temperature is above or below the temperature limits of the "Cool
Pad Range", the amount of water "on" time each 5 minutes is increased or
decreased 5 seconds. With the default settings the temperature is only checked
every 20 minutes. If it is desired for the temperature to be checked more often if
a sudden large temperature change occurs, then values should be entered in the
"Extra aggressive if" lines (Items 5 and 6, Figure 71). For example, The Control
is set to be extra aggressive if 3.0 degrees above the upper limit of the COOL
PAD range. Whenever the temperature is more than 3.0 degrees above the upper
limit of the COOL PAD range the Control will begin checking the temperature
every 5 minutes (every repetition rate) instead of every 20 minutes (every 4
repetition rates) until the temperature returns to less than 3.0 degrees above the
COOL PAD range. The default extra aggressive settings are 3 degrees.
On a very hot day it would be possible for the water to be running continuously
and the temperature to be in the "Cool Pad Range". A more moderate day might
result in the water running a very small amount of time in order to keep the
temperature within the "Cool Pad Range". Similarly, on a low humidity day the
amount of water required to keep the temperature within the "Cool Pad Range"
would be less than for a high humidity day. The Control will adjust the water as
required to keep the temperature in the "Cool Pad Range". If it is desired to not
allow the water to run continuously, then the Max water allowed (Item 7, Figure
71) value should be changed so that it is less than the repetition rate value.
Figure 71. Cool Pad Function
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6
7
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