Hired-Hand Farm Hand Series: Data Shuttle Launch Pad - Manual (Page 11)

Part No. 4801-0165 Rev 7-02 Data Shuttle Launch Pad 9
Low Outside Temperature - The outside temperature the controller will use with the
corresponding high and low pressure limits.
Low Pressure Limit - The lower limit for pressure when outside temperature is
at the low temperature limit.
High Pressure Limit - The upper limit for pressure when outside temperature is
at the low temperature limit.
10.3 ALARMS Window
This window applies to: ÎFarm Hand Power Vent with Rampping
This window is selected by clicking on the Alarms tab at the top of the window.
This window is used to adjust the Alarm Cycle Time in Minutes and the Static
Pressure. Also, the Low Pressure Limit and the High Pressure Limit can be set.
The following parameters can be
set using this window:
Cycle Alarm - Cycle Time in
Minutes - The cycle alarm will
warn if the timer fans failed to
operate. The controller will look
for a pressure surge which would
normally be caused when the
timer fans turn on. If this
pressure surge is not sensed
within the Cycle Time specified,
the controller will signal the
alarm system. Setting the Cycle
Time to 0 (zero) prevents the
alarm from sounding.
Cycle Alarm - Static Pressure
in Inches of Water - Sets the static pressure that the
cycle alarm uses to alarm. In the above example, if the
pressure is set to 0.10 inches of water (0.10”w.c.) and the controller never sees a pressure
spike of at least this level, the alarm will sound.
Low Pressure Limit - The low pressure alarm will send a signal when pressure drops
below the Low Pressure Limit (setpoint) for greater than 45 seconds. This alarm warns if
the vents failed to close. Setting the Low Pressure Limit to 0 (zero) prevents the alarm
from sounding .
High Pressure Limit - The high pressure alarm will send a signal to the alarm system in
the same manner as the Low Pressure alarm, but only when pressure exceeds the High
Pressure Limit (setpoint) for greater than 45 seconds. (High Negative Pressure) This
alarm warns if the vents did not open. Setting the High Pressure Limit to its maximum of
0.20 prevents the alarm from sounding.
Drag the mouse to adjust
needles.