Thermo Scientific Accela 1250, Hardware Manual

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1
Introduction
Status LEDs
Thermo Scientific Accela 600 and 1250 Pump Hardware Manual 7
Status LEDs
The 600 and 1250 pumps have four status LEDs on the left door that provide information
about the pump.
Table 3 lists the states of the four status LEDs.
Table 3. Status LEDs for the pump
LED Status Description
Power Green The pump is switched on and is receiving power.
Comm Amber The pump is not communicating with the data system
computer.
Green Communication to the data system computer has been
established.
Flashing green A pump program is downloading from the data system
computer.
Run Amber The power is switched on, 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 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.
For additional diagnostics information, see “Degasser
Troubleshooting Guide” on page 118 .
Green Sufficient vacuum has developed to perform liquid
chromatography.