Figure 4.2 Inlet Gas Lines Connections Designation
4.2.3 Split Line Filter
An active carbon filter is installed in the split line in order to protect the EFC from
contamination by residual sovent vented through this line. The filter is mounted on the EFC
manifold using standard compression fittings and is installed at the factory. The filter does
not have a breakthrough indicator warning about its saturation. In order to avoid the work
with the saturated filter, it must be replaced every 6 months. The filter is always supplied
with a label tag attached to it (Fig. 4.3). The installation date must be written on the tag
during initial installation as well as after the filter replacement.
Figure 4.3 Split Line Filter Tag
CAUTION!
Do not apply excessive force while replacing the filter as it can lead to the filter thread
damage. Tighten the filter by hand until its o-ring makes contact with the EFC manifold
and then use a wrench to turn it additionally quarter of a turn.
4.2.4 External solvent Monitor
NOTE!
Do not place the external solvent monitor above surface which may become very warm or
hot as this may disrupt the sensor readings.
The OPTIC-4PTV version is delivered with an external solvent monitor. It should be installed into the
inlet split line using the pneumatic fittings and seals supplied with the External Monitor Kit. In order
to prevent the monitor’s signal drift, it should be placed as far as possible from the GC hot zone.
Preferably, the monitor should be installed above the gas control compartment.
The solvent monitor electrical signal cable should be connected to the “Ext Solvent Monitor”
connector on the rear panel of the instrument (Fig. 4.1).
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