SP VirTis BenchTop 2K, Operator'S Manual, Page: 22 / 56

Sentry 2.0 Controls VirTis BenchTop 2K, 4K and 6K
12 Revision 004, 12/09
© SP Industries, Inc. 2009
2. Vacuum
The LEDs on the top wave represent the following vacuum setpoints:
LED Vacuum (mTorr) Color
1 2000 Red
2 1000 Red
3 500 Amber
4 200 Amber
5 100 Green
6 50 Green
7 ≤ 20 Green
Button Functions
Up/Down (+/-) Buttons
The Up/Down (+/-) buttons allow you to navigate the menus and increase or decrease
setpoint values displayed on the LCD display.
MENU Button
The MENU button performs a number of functions. During an alarm condition,
pressing the MENU button will temporarily silence (but not clear) the alarm. When
viewing the Synoptic screen, the MENU button will display the Main Menu.
The
MENU button also acts as an enter key, activating the selected option. To return
to a previous menu, highlight the carat (
∧
) at the top left corner of the LCD screen and
press the MENU button.
COND Button
The COND button activates the refrigeration system. This provides system cooling for
vapor condensing.
VAC Button
The VAC button enables the vacuum pump and opens the vacuum brake solenoid
(VBS) valve, allowing the system to be evacuated. Vacuum level control options can
be programmed from the User Options screen.
Note: If your vacuum pump is not connected to the IEC plug on the rear of the BenchTop unit,
the VAC button will not control your pump. See your pump manual for operation instructions.
AUTO Button
The AUTO button will start the refrigeration and vacuum systems in a set sequence.
The condenser will first cool to the condenser setpoint. Once the setpoint is achieved,
the vacuum pump will energize and begin evacuating the system.
DEFR Button
The DEFR button activates the condenser defrost function. Hot gas defrost is directed
toward the condenser walls to quickly loosen ice.
Note: Defrost mode is disabled while any other function is on.