Metrohm TitrIC 3 - Manual (Page 11)

Application Bulletin 287 e
Installation Instructions of TitrIC 3
Page 11/16
5 Miscellaneous
5.1 Membrane Pumps of 815
The membrane pump at tower 1 is used to deliver the DI water for rinsing of the external vessel, the
membrane pump at tower 2 to empty the external vessel.
Therefore dismount the Distributor Rinse/Aspirate of tower 1 and mount the new one (6.1808.170). This
enables to connect the lower part of membrane pump at tower 2 to the left connector of the Distributor
leading to the M8 aspiration tip to empty the external vessel. The upper part of the membrane pump is
connected to the waste canister (see page 6).
The upper part of membrane pump at tower 1 is connected to the right connector of the Distributor
leading to the three M6 rinsing nozzles to rinse the external vessel. The lower part of the membrane
pump is connected to the DI-water canister.
5.2 Stirrer
The 802 Rod Stirrer is inserted through opening 8 of the external cell and connected to the tower 1 of
the 815. The propeller (6.1909020) is pushed on from below.
5.3 Length of the aspiration tips in the external cell
Clamp the titration vessel to the titration vessel lid.
The M8 aspiration tip in opening 1 must reach right to the base of the titration vessel as this is
the only way to ensure that the external cell is cleaned properly.
The buret tips in openings 3 and 4 should reach the middle of the titration vessel.
5.4 Electrodes
The pH electrode (Aquatrode Plus with Pt 1000; 6.0257.000) is inserted into opening 9 together
with the SGJ sleeve (6.1236.050). The cable is connected to the 815 Robotic Sample
Processor at the rear top right. The plug of the gray cable is connected to the opening marked
Ind. . The red plugs with the adapters 6.2103.140 and 6.2103.130 (supplied with 809) are
inserted in the openings marked Temp.
If the electrode is not to be used for some time then it should be returned to its holder and kept
in the storage solution (6.2323.000).
Conductivity cell (6.0912.110): The measuring cell cable is led through the guide chain of the
815 and the two black plugs are inserted into the openings marked Cond. Cell of 712
Conductometer, the two red plugs into those marked Pt 100/1000 . Later (as soon as the titration
head has been mounted) the measuring cell with the SGJ sleeve (6.1236.050) will be inserted
in the SGJ 14 opening of the titration head.