Operator`s manual

Sentry 2.0 Controls VirTis BenchTop 2K, 4K and 6K
16 Revision 004, 12/09
© SP Industries, Inc. 2009
Alarms Menu
The Alarms screen displays all active alarms. A shaded box appears in front of
triggered, active alarms. You can also accept and clear triggered alarms from this
screen. To clear an alarm, use the Up/Down (+/-) buttons to highlight the desired
alarm and press the MENU button. Before the alarm will clear, the condition that
caused the alarm must be resolved.
∧ Alarms
_ Power Outage
_ Condenser Over Temperature
_ Vacuum Exceeded
_ Vacuum Pump Maintenance
Menu To Clear
Setpoints Menu
To edit setpoint values, use the Up/Down (+/-) buttons and highlight the desired field.
Press and hold the MENU button until prompted to adjust the value. Adjust the value
with the Up/Down (+/-) buttons and press the MENU button to enter the setpoint.
∧ Setpoints
Condenser Temperature -60
Vacuum OK 0500
Power Save Deadband 050
PRESS AND HOLD MENU BUTTON TO ADJUST
Condenser Temperature
The Condenser Temperature setpoint is the temperature at which the vacuum will
energize in auto mode. The Condenser Over Temperature alarm is also referenced
from this value. The alarm will be triggered when: (1) the condenser temperature rises
more than 10 °C above the setpoint temperature after obtaining the setpoint at least
once, and (2) the condenser is unable to obtain the setpoint after 30 minutes of
starting an automatic cycle.
Vacuum OK
Vacuum OK is the pressure setpoint at which the Vacuum Exceeded alarm will be
generated. There is a 30-minute delay in the Vacuum Exceeded alarm to allow flasks
to be added to the system without generating this alarm.
Power Save Deadband
The Power Save Deadband is the acceptable amount of pressure rise within the
system before the vacuum pump is re-energized. This value is used when Vacuum
Control is set to Power Save in the User Options screen.