Table 1 Maintenance schedule
Procedure
Daily
Weekly
Monthly
3
months
6
months
Yearly
2
years
As
necessary
Verification
X
X
X
Calibration
X
X
Electrode reactivation
X
X
Temperature
calibration
X
X
Refill calibration
solution
X
X
Refill reactivation
solution
X
X
Refill electrolyte
solution
X
X
Electrodes manual
cleaning (with
paper/tissue)
X
X
Replace sodium
electrode and
reference electrode
(consumable parts)
X
X
Conditioning solution
(non-cationic
applications)
X
X
Conditioning solution
(cationic
applications)
1
X
Solenoid valves
X
X
The following items are performed by the Hach Lange service group.
System check-up
X
External audit
X
Reagent changes
This procedure is applicable to each change of reagent solution. It allows the regulation of the
volumes of solutions in the bottles. The analyzer consistently checks the consumption of these
solutions, triggering an alarm when these levels get too low. This option
must
be selected each time
a solution is refilled or changed to reset the measurement parameters.
Note: The conditioning reagent and electrolyte consumption are approximate measurements, so a discrepancy
between measurement and actual consumption may occur. The conditioning solution consumption has been
measured for a pH of 11.2 at an ambient temperature of 25°C.
Adjust bottle volumes
This option should be used to set the default values of reagents or when bottles are being used that
are not full (see
on page 25).
1.
Select the
ADJUST BOTTLE VOLS.
option to set the reagent volumes.
2.
Enter the volumes for the conditioning solution, reactivation solution, calibration solution and
electrolyte in milliliters.
1
For additional information, refer to the expanded version of this manual.
24
English
