Hach TitraLab Basic User Manual page 16

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
English 16
Every
6 months 12 months
week
x
x
x
x
x
x
x
x
x
x
Troubleshooting
Error messages
Error displayed Cause
The maximum volume is
reached before the titra-
Maximum volume
tion is completed. The
reached.
titration is cancelled auto-
matically.
The first measurement is
Error initial tendency.
incorrect.
No results are stored or
Data logger empty. no results match the
search filter.
All data in the data log will
All data will be erased.
be erased.
Printer is connected but
Printing error.
not activated.
Computer is activated but
PC not connected.
not connected.
Resolution
Empty the titration cell
and restart the titration.
When measuring free
SO : The sample might
2
not contain any SO .
2
When measuring total
SO : Make sure that the
2
acid and alkali pumps are
functional.
Change the search filter
criteria.
Switch on the printer.
Check the computer con-
nection.