Metrohm 837 IC Degasser - Manual (Page 23)

3.1 General information
837 IC (Eluent/Sample/Combi) Degasser/ Instructions for Use 8.837.1003
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3 Operation
3.1 General information
• The vacuum pump works at two levels. The first level is used
to generate the vacuum, the second level to maintain it.
• The display mm Hg <90 lights up orange if the pressure is
between 65 and 90 mm Hg.
• The display Abs <90 lights up green, if the pressure is below
65 mm Hg. This is the normal working status, and should be
reached a few seconds after switching on the pump.
• The display Status lights up green, if the pump is switched on.
A new 837 IC (Eluent/Sample/Combi) Degasser device needs a cer-
tain running-in period to reach the optimal performance. Therefore all
chambers should be run with eluent (for eluent flow paths) resp. ul-
trapure water (for sample flow paths) for one night before using it the
first time.
3.2 Routine operation
3.2.1 Manual operation
If you want to operate the Degasser manually, proceed as follows:
1 Installation
Install the 837 IC (Eluent/Sample/Combi) Degasser as described
in section 2.
2 Deactivate the remote-connection
Set the remote-switch 10 to OFF. The remote-connection is deac-
tivated that way.
3 Switch on/off pump
Set the mains switch 12 to I to switch on the pump and to 0 to
switch it off again.
3.2.2 Control with «IC Net»
If you want to control the degasser with «IC Net», install it as described
in section 2.3. The control via «IC Net» is described in section 6.21 of
the «IC Net 2.3» Software-Manual.