Endress+Hauser Stamolys CA71NO, Руководство по эксплуатации

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Trouble-shooting
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9 Trouble-shooting
9.1 Trouble-shooting instructions
Although the analyser is not very prone to faults due to its simple assembly, problems can, of course,
not be completely ruled out.
Possible errors, their causes and their possible remedies are listed below.
9.2 System error messages
9.3 Process errors without messages
Error message Possible cause Tests and / or corrective measures
Calibration failed
If a calibration fails, you can enter a new calibration factor manually (CONFIGURATION menu,
"Calibration factor"). Cancel the error message by switching the analyser off and on briefly.
If the error occurs frequently, you will have to search for the cause.
Air bubbles in system Start calibration manually (PARAMETER ENTRY, "1st calibration", change the date accordingly,
start measurement) or enter a new calibration factor.
Incorrect concentration of standard Check the concentration in the laboratory. Adjust the standard accordingly (PARAMETER ENTRY,
"Calibration solution") or replace the standard.
Reagents contaminated or aged Simple check: Mix about 5 to 10 ml of standard solution with about 5 ml of reagent in a beaker. If
it does not change colour after max. 10 minutes, replace the reagents.
Standard dosing defective Check the valves for contamination, obstructions (visual inspection). Replace valve hoses if
neccessary.
Wrong photometer Check the setting in the CONFIGURATION menu.
Optical cell dirty Not enough light intensity sent to
receiver, e.g. due to sedimented
particles – Flush with 12.5% bleaching lye
– When using a CAT430:
Check the filter.
Wrong photometer Wrong photometer Check the setting in the CONFIGURATION menu, "Photometer".
No sample
No sample Establish sample transfer.
Level measurement defective Check level measurement on sample collector.
Spillage error
Leak at canisters or hoses Replace defective components and clean and dry the CA 70 or those components affected by the
leak.
No measuring signal
Optical cell filled with air Convey sample for 1 minute (SERVICE).
Photometer defective Inform Service
Electrical connection Check all electrical connections and the tight fit of the fuses.
Fuse defective Replace fuse F4 or F5 (medium time-lag 0.2 A)
Error Possible cause Tests and / or corrective measures
Measured values always
the same
Reagents contaminated
or aged Simple check: Add about 5-10 ml of standard solution with about 1 ml of reagent in a vessel. If it does not
change colour after max. 10 min, replace the reagents .
No sample, no reagents Make sure sample and reagents are supplied, check level monitor and clean if necessary
System blocked Flush with 12.5% bleaching lye (monthly maintenance).
Check the hose of valve 4.