Agilent InfinityLab LC Series Vialsamplers User Manual 130
3Using the Module
Using the Optional Sample Cooler/Sample Thermostat
Operation Information
Reaching Setpoint Temperature
Depending on the ambient conditions and the sampler configuration (for
example, hotel configuration for the Multisampler), reaching the setpoint
temperature can take from 30
min up to a couple of hours.
Condensate Formation
Operating the cooler/thermostat at temperatures below ambient results in
condensate formation. This condensed water is collected in the base plate of the
cooler/thermostat and drained through the drainpipe at the back of the unit. The
container for condensate collection should be regularly emptied to ensure the
proper functioning of the system.
Dew Formation
Setting the cooler/thermostat from a lower to a higher temperature setpoint, or
just simply turning it off, can result in dew formation on the internal surfaces of
the sampler. This is normal and should cease after a couple of hours at the most.
Reaching the 4 °C setpoint from an ambient temperature of 22 °C takes about
45 min for the Vialsampler (G7129A/B/C or G7157A), as well as for the
Multisampler (G7167A/B, G5668A, or G4767A) with a single 2H drawer installed.
This relatively slow ramping down of the temperature is necessary to avoid ice
formation.
For the best performance of the Sample Cooler/Sample Thermostat, all drawers
must be installed in the sampler. For the Multisampler, use dummy drawers if no
full hotel configuration is needed.
If the container is overfilled or the condensate tubing is blocked, the condensate
sensor is triggered, rendering the HPLC system to enter the error state (see
“Sample temperature control switched off due to condensate” on page 213).
Depending on the ambient conditions in the lab, the amount of condensate can
vary from 200 mL to 2 L per day. Waste containers for the condensate should
not be filled to the top. The waste container must be emptied regularly.
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