Cumberland Expert-32T, User Manual

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Expert-32T rev.03
TUNNEL VENTILATION
The Expert-32T allows you to control endwall curtains for tunnel ventila-
tion. The user determines when to start tunnel ventilation by defining
the starting fan stage and the stage at which the curtain is fully opened.
When the first tunnel stage is reached, the curtains are opened accord-
ing to the opening time defined for the first stage. When half of the
opening time has elapsed, the fans for the stage are activated. When
the next tunnel stage is reached, the curtains continue to open according
to the opening time defined for that stage, etc. When the temperature
drops, the same sequence is executed in reverse order. The following
diagram sums up the operation of the first two tunnel stages.
The user must also define a minimum animal age and minimum outside
temperature for using tunnel ventilation. Tunnel ventilation is never
activated unless this age has been reached and the outside temperature
is sufficiently warm.
Tunnel
stage 1
Tunnel
stage 2
Curtains start
opening - then
tunnel stage 1
fans turn on
Tunnel satge1
fans turn off
Tunnel stage
2 fans turn on
Curtains start
closing - then
tunnel stage2
fans turn off
Set Point
Start Temp.
Tunnel
stage1
Start Temp.
Tunnel
stage 2
T°
Ventilation
Level
Stop Temp.
Tunnel
stage 1
Stop Temp.
Tunnel
stage 2