Shutting Down The Autosampler; Flushing The Wash Reservoir And Flow Path - Agilent Technologies SPS 4 User Manual

Shutting Down the Autosampler

To shutdown the autosampler, complete the following steps:
1 Drain the wash system by removing the rinse solution uptake tubing
2 Release the pressure plate on the wash pump.
3 Turn off the autosampler power switch.

Flushing the Wash Reservoir and Flow Path

Generally, you can operate the autosampler without flushing the wash
system (wash reservoir and flow path). Under normal circumstances, you
can simply drain the wash system prior to shutting down the autosampler.
However, you need to flush the wash reservoir and flow path under two
circumstances:
• during initial startup of the autosampler after installation
• following the use of strong bases, acids, or organic solvents as rinse
Flushing the wash system during initial startup of the autosampler
removes any contaminants that could cause interference during sample
analysis. Flushing the wash system after using strong rinse agents
prevents degradation and failure of the flow path components.
To flush the wash reservoir and flow path, complete the following steps:
1 Insert the rinse uptake tubing into a deionized water source.
If you are flushing the wash system during initial startup, first use a 2% nitric acid solution
N O T E
as the rinse agent, followed by deionized water.
Agilent SPS 4 Autosampler User's Guide
from the rinse solution source. Let the wash pump run until all solution
drains from the tube attached to the wash reservoir outlet.
If you use a rinse solution other than deionized water, flush the wash
reservoir with deionized water before shutting down the autosampler.
For more information, see the following section,
Reservoir and Flow Path"
Releasing the pressure plate decreases wear on the pump tubing.
agents
on Page 55.
Operation
"Flushing the Wash
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