Hach-Lange PHOSPHAX indoor sc - Manual (Page 43)

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Maintenance
6.2 Routine maintenance schedule
The maintenance schedule is given for standard applications.
Deviant applications may cause different maintenance intervals.
6.3 Validation (Analytical quality assurance)
Regular validation checks of the complete instrument must be
completed to make sure the analysis results are reliable.
Required parts:
• Blind plug LZY193 (Plugging set LZY007)
• Beaker (for example 150 mL)
• Standard solution for validation
Follow the internal menu steps for the validation.
1. From the MENU select SENSOR SETUP>PHOSPHAX SC and
press ENTER.
2. Select MAINTENANCE>TEST/MAINT>VALIDATION>
DISCHARGE.
3. Enter the number of measurements which should be
discharged before starting the measurements of the validation.
(Default value: 2; value range: 1 to 5)
4. Select NUMBER OF MEAS..
Table 4 Routine maintenance schedule
Description 3 months 6 months 12 months 24 months
Check measurement chamber and history of amplification
(event log).
X 1
Visual check analytical compartment, manual cleaning if
necessary.
X 1 X
Check filter pads, clean/ replace if necessary, particularly on
fan side.
X 1 X
Check reagents, replace if necessary. X 1 X
Check cleaning solution, replace if necessary. X 1 X
Check maintenance counters. X 1 X
Function check of both fans. X
Function check heating for analyser enclosure. X
General function check. X
Check system for air impermeability. X
Clean manually and adjust cleaning interval if applicable. X
Read out and analyse event log. Read out and check data log
if necessary.
X
Check reagent pump and replace if necessary (check every
6 months after 12 months of use).
(X) 2 X
Replace pump head for air pump. X
1 Recommended, typical maintenance interval, especially for reagents. The actual reagent exchange intervals are depending on
configuration.
2 Maintenance cycles are given for standard applications. Deviant applications may cause different maintenance intervals.