Hach TitraLab Basis Bedienungsanleitung Seite 87

Maintenance
WA R N I N G
Risk of injury
Before maintenance or repair work is conducted, thoroughly rinse the instrument
with deionized water and make sure that there are no residual chemicals in the
tubes and pumps.
Only use genuine replacement parts and accessories.
The instrument must be serviced by the manufacturer's service department at the
prescribed intervals.
Maintenance schedule
Maintenance task
Replace dry desiccant cartridges
content.
Check all tube connections for
leaks and damage.
Replace burette syringe
Valve block
Burette feed tube
Burette discharge tube
Peristaltic pump, pump cassette
Pump feed tube
Pump discharge tube
Bottle closure set
Every week 6 months 12 months
x
x
x
Troubleshooting
Error messages
Error displayed
Maximum volume
reached.
Equivalence points not
found.
Data logger empty.
x
All data will be erased.
x
Printing error.
x
x
PC not connected.
x
x
x
Unstable mV reading
Cause Resolution
The maximum volume is
reached before the titra-
Empty the titration cell
tion is completed. The
and restart the titration.
titration is cancelled auto-
matically.
No equivalence points Check system with
found during titration. Sodium chloride standard
of known concentration.
Check electrode accord-
ing to manufacturer rec-
Chloride content below
ommendations, maintain
measuring range.
electrode as required.
Check porous pin is cov-
ered by sample.
No results are stored or
Change the search filter
no results match the
criteria.
search filter.
All data in the data log will
be erased.
Printer is connected but
Switch on the printer.
not activated.
Computer is activated but Check the computer con-
not connected. nection.
Check electrode accord-
ing to manufacturer rec-
Defective Silver rod elec-
ommendations, maintain
trode and/or insufficient
electrode as required.
immersion.
Check porous pin is cov-
ered by sample.
English 87