Status Indicators - Thermo Scientific VH-D20 Operating Manual

6 • Operation
MUTE ALARM
GAS
When the Device is Connected in the Chromatography Data System
6.3.2

Status Indicators

LED Bar
Page 90
Beeping alerts you when the device detects a problem, for example,
leakage. To turn off the beep for the current alarm, press this button.
Eliminate the source for the alarm within 10 minutes. Otherwise,
beeping starts again. If the device detects a different problem, beeping
alerts you again immediately.
Pushing the GAS button will turn the detector gas flow on and off.
The LED next to the button indicates the gas status:
LED Description
Off (dark) The detector gas flow and drain pump are turned off.
Green The detector gas flow and drain pump are turned on.
The button functionality is as follows when the device is connected in
the chromatography data system:
• No injection or sequence or baseline monitoring is running:
All functions are available from the keypad.
• An injection or sequence or baseline monitoring is running:
The GAS button is disabled. However, the MUTE ALARM function
remains available from the keypad, allowing you to turn off the beep
for the current alarm.
The status LED bar on the front side of the device and the STATUS LED
on the inside keypad provide information about the device status.
The LED bar colors provide the following information:
LED Bar
Off (dark)
Dimmed
Yellow, flashing slowly
Description
The power to the device is turned off.
The doors of the device are open.
The power to the device is turned on, but the device
is not connected in the chromatography data
system.
Charged Aerosol Detectors (VH-D20, VF-D20)
Operating Manual