Operating instructions

6. Maintenance page 68
Mercury Instruments UT-3000-E_V2.11.docx 31.07.12
Analytical Technologies
6.5 Routine Maintenance
6.5.1 Replacement of Membrane Filter
Under normal circumstances the sample membrane filter has to be inspected regularly. If a
deposit of particulate matter or staining is visible, the filter has to be replaced. For filter
replacement, turn the filter slightly and pull it out. Insert the new filter into the filter holder and
push it carefully over the white nozzle in the centre of the filter holder. Turn the filter slightly.
6.5.2 Replacement of the filter cartridges
A) UT-3000 Unit
Inside the instrument there are two filter cartridges: one activated carbon cartridge and one
particulate filter cartridge. These should be replaced annually.
First loosen the two screws in the back of the UT-3000 photometer unit and remove top cover of
the case. Do not pull with force as a ground wire is mounted to the cover. The ground wire can
be disconnected by pulling the plug on one end. The filter cartridges are now visible and can be
removed from their holding clamps. To replace the cartridges, the connected hose has to be
pulled off.
F IGURE : OPENING OF THE TOP COVER OF THE INSTRUMENT AND REMOVING THE CARTRIDGES OF THE UT-3000