1
Introduction
Functional Description
Thermo Scientific
Accela Pump Hardware Manual
7
Status LEDs
Four status LEDs—labeled Power, Communication, Run, and Degas—are located on the left
door of the pump (see
Figure 1
on
page 1
and
Figure 5
).
Table 1
describes these LEDs.
Figure 5.
Front panel LEDs
Table 1.
Status descriptions for the Accela Pump LEDs
LED
Status
Meaning
Power
Green
The pump is on and is receiving power.
Communication
Amber
The pump is not communicating with the data
system PC.
Green
Communication to the data system PC has been
established.
Flashing green
A pump program is downloading from the data
system PC.
Run
Amber
The power switch is in the On position, but the
pump pistons are idle, producing no flow.
Flashing amber
A firmware download is in progress or an error
condition has occurred.
Green
The pump pistons are moving, but a pump
program is not running. This state can occur when
the pump is under direct control or a pump
program has ended.
Flashing green
The pump is running a pump program from a
downloaded method.
Degas
Amber
The degas unit is building vacuum.
Flashing amber
A failure, such as a loss of vacuum, has occurred.
Green
Sufficient vacuum has developed to perform
chromatography.
Power
Communication
Run
Degas
