Endress+Hauser Analytik Jena multi N/C, Руководство по эксплуатации, Страница: 79 / 106

multi N/C pharma UV Maintenance and care
79
7.5.2 Cleaning the UV reactor
The UV reactor can be cleaned with the oxidizing reagent: Na
2
S
2
O
8
(with c = 80 g/l). It
is not necessary to remove the UV reactor.
For cleaning, dip the sample aspiration cannula into the reagent bottle filled with
Na
2
S
2
O
8
solution and start one measurement by hand (manual mode).
State Liquid
Method TC / with additional reagent
Determinations min. 2, max. 3
Rinse cycles 1|0|0|0
Sample volume 20,000 µl
Rinse volume 2500 µl
Max. integration time 600 s
After completing the cleaning process, carry out additional purging measurements
using ultrapure water in NPOC mode. Here too, use the maximum injection volume of
20,000 µl and 2-3 determinations to fully clean the reactor.
Recheck the illumination capacity of the lamp again after cleaning. If the cleaning does
not improve the illumination, the UV reactor must be replaced by the customer service.
7.6 Cleaning the TC condensation vessel
CAUTION
The TIC condensate container contains phosphoric acid! Phosphoric acid is irritating
for eyes, skin and the mucous membrane!
Always wear goggles and protective gloves when handling concentrated phosphoric
acid! Rinse the affected skin with water immediately.
Visually inspect the TIC condensate container regularly for deposits. A cleaning is only
required when the purging of the sample is not ensured anymore.
Remove the TIC condensation vessel as follows and clean it:
1.
Exit the control and analysis software multiWin.
2. Open the doors of the analyzer.
3. Remove the hoses from the ultrapure water bottle, sample bottle and reagent
bottle and wipe them with a clean paper towel.
4. Remove the reagent bottles and drip trays from the analyzer.
Method configuration