Cumberland Expert-32P, User Manual

Page: 31 / 76

31 Expert-32P rev.11
Expert-32P
MINIMUM VENTILATION CURVE
This curve allows to change the fan selection and the fans' running time,
within minimum ventilation cycles, over a given period of time. Each
curve is defined by ten points. Each point specifies a day number and a
fan On Time for that day. The herd age value defines the current day
number used by the curve. Once the points are defined, the minimum
ventilation curve must be activated. When the minimum ventilation
curve is activated, the controller adjusts the on time every hour in a
linear fashion between two consecutive points.
1
Specifying Minimum Ventilation Curve
Set the function to MINIMUM VEN-
TILATION / CURVE
using the menu
select buttons. The current on time,
cycle time and curve on/off state is
displayed.
Press the down-arrow key in order
to select the day 1 menu. The day
number, on time for the first curve
point is displayed.
Press Edit key as required to adjust each parameter in turn. When a
parameter flashes, it can be adjusted using the arrow keys.
Press the down-arrow key to display and adjust the other points of
the curve.
NOTE:
All ten points of the curve must be specified. If you don't need
ten different points, repeat the step for each unnecessary point of the
curve.
1. day 1
ON 1m00
ON 1m30 curveOFF
Cyc 5m00
Press the Edit key. The night on time seconds flash on the display. Use
the arrow keys to adjust the night on time seconds to the desired value.
NOTE : The On Time and Cycle Time are limited by the fan start/stop delay if
vent doors are used.