Endress+Hauser Stamolys CA71NO, Operating Instructions Manual

Page: 31 / 56

Maintenance
31
7 Maintenance
"
Caution!
You must not carry out any procedures
not listed in the following chapters, yourself.
This work must only be carried out by the service.
7.1 Maintenance schedule
All maintenance duties that have to be carried out during normal operation of the analyser are
explained below.
If you are using a sample conditioning unit, e.g. CAT 430, coordinate the maintenance work
required for it with that of the analyser. For this, read the maintenance chapter in the respective
operating instructions.
!
Note!
Whenever working on the reagent hoses, the hoses must be disconnected from the canisters, in
order to prevent contamination of the reagents.
7.2 Replacing reagents
#
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
Period of time Duty Note
weekly – Check and note calibration factor (for service
purposes)
– Move valve hoses into their position and
spray with silicone (extends the service life).
CONFIGURATION
monthly – Flush sample line hose system with
pressurized water (disposable syringe), check
and replace
reagents if necessary
– Flush the sample tubing system with 12.5%
bleaching lye (sodium hypochloride) and
reflush thoroughly with water
#
Warning!
Corrosive. Wear protective gloves and
goggles. Beware of reagent splashing.
– Spray pump hoses with silicone spray
– Check sample collector for fouling and clean
it if necessary
– see chapter "Replacing reagents"
– Remove the cassette of the
sample pump.
– Connect the one-way syringe instead of the
sample inlet.
– SERVICE:
V1: S, P1: g, P2: s, V2: S
Add solution to sampling connection
every 3 months – Cleaning the drain lines:
Flush all hoses with 10% ammonia solution
and then with sample for at least 30 minutes
– Rotate pump hoses
every 6 months – Replace pump hoses
– Replace valve hoses – see chapter "Replacing pump hoses"