Metrohm 875 KF Gas Analyzer - Manual (Page 40)

4.3 QUICKSTOP module
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The rinsing medium has to fulfill the following requirements:
￭ It has to be a suitable solvent for the nonvolatile residues.
￭ It has to exhibit a low boiling point, as it can be removed from the pip-
ing only by nitrogen rinsing.
Petroleum ether with a boiling range between 40 °C and 60 °C is recom-
mended for oil contaminations. The rinsing medium is dosed with a dos-
ing device that is optionally available. The system can be cleaned with the
Rinsing with solvent method. The precision control valve must be
entirely open during rinsing. For the subsequent sample measurements,
the precision control valve has to be adjusted to the corresponding sample
again using the Precision control valve setting method.
4.3 QUICKSTOP module
The red button on the left side of the housing resets all modules that are
connected to the I/O controller to their default state (this usually means
switched off), e.g., heater, valves and potential-free signal contacts.
The button locks in place and has to be pushed again to unlock.
Dosinos, stirrers and other devices that are connected directly to the 851
Titrando are not affected. They must be stopped directly in the software.
If an automatic analysis is running, then the quickstop module input can
be queried in this tiamo™ method. Thus, the devices connected to the
851 Titrando can also be stopped in this method.