Endress+Hauser StamoLys CA 71 MN, Руководство по эксплуатации

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StamoLys CA 71 MN Maintenance
Hauser 31
7.2 Replacing reagents
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Warning!
•
There is a danger of crushing limbs at doors, inserts and pump heads.
•
Refer to the warning instructions in the safety data sheets when handling reagents.
Wear protective clothing, gloves and goggles.
•
Make sure the workplace is well ventilated when you work with chlorine bleach. If you
feel unwell, consult a physician immediately.
•
If reagents come into contact with the skin or eyes, carefully rinse with copious
amounts of water and consult a physician immediately.
•
Never add water to reagents. Reagents containing acids may splash and heat may
build up.
If you store the reagents correctly (in the dark, not over 20 °C) they will keep for minimum
12 weeks from the date of manufacture (batch number). When this period of time has
expired, the reagents must be replaced. Shelf life can be prolonged by keeping the
reagents in a dark, cool storage place. The reagents absolutely must be replaced when:
•
the reagents have been contaminated by sample
(see "Trouble-shooting instructions")
•
the reagents are too old
•
the reagents have been spoilt by incorrect storage conditions or environmental
influences.
Reagents check
a. Check the standard solution concentration in the laboratory. Adapt the values
(PARAMETER ENTRY, "Calibration solution") or replace the standard solution.
b. Mix 10 ml standard solution and 5 ml of each reagent in a vessel. You must replace
the reagents, if there is no visible colouration ten minutes later.
To replace the reagents proceed as follows:
1. Carefully remove the hoses from the canisters and wipe them with a dry (paper)
cloth. Wear protective gloves when doing this.
2. Switch on the reagent pump for about 5 seconds.
3. Flush the reagent hose with plenty of distilled water (see SERVICE).
4. Replace the reagent canister and feed the hoses into the new canister.
5. Fill the reagent hose with the new reagents (SERVICE). Switch all pumps to "g". If
there are no more air cushings to be seen in the hoses, switch the pumps to "s".
6. Determine the reagent blank value by using destilled water as a sample (see
chapter "Calibration").
Enter the measured value as the frequency offset (CONFIGURATION / "Frequency
offset").
7. Then carry out a calibration (see chapter "Calibration").