YSI 9600 - Manual (Page 57)

• Remove the waste bags from the bottom of the carousel and dispose of the waste properly. See p. 5
and Section 12 of this manual for warnings and recommendations on waste disposal. Remove all air
from the waste bags as described in Section 2.8.2 above and reinstall them.
• Remove the reagent bags and properly dispose of any excess solutions. Attach each bag to the 60-mL
syringe and add ca. 50-60 mL of purified (deionized or distilled) water to each bag. Slosh the water
around in the bag to rinse and then empty the bag, again properly disposing of the waste. Refill the
bags with reagents prepared as described in Section 2.4 above.
• Rinse the two standard bags with new standard solution after the water rinse. Slosh the standard
solution around in the bag to rinse out the water and then empty the bag. Refill the bags with new
standard solution as described in Section 2.4 above.
• Remove the cadmium column assembly from the carousel and plug the ends with the two black fittings
that were set aside after column installation as described in Section 2.6 above. Dispose of the
cadmium column via a commercial hazardous waste handler as described on p. 5 and Section 12 of this
manual.
• Activate a new cadmium column as described in Section 2.5 above and install it in the carousel as
described in Section 2.6 above.
• Reinstall the reagent (filled) and waste (empty) bags as described in Sections 2.7 and 2.8 above.
• Replace the carousel in the outer shell as described in Section 2.9 above.
• Install a NEW inlet filter – available as part of the YSI Model 9617 Inlet Filter Kit.
NOTE: YSI strongly recommends the use of a new inlet filter for each deployment. In an
emergency where a new inlet filter is not available you may attempt to clean the filter by soaking
the used filter assembly in water for approximately 30 minutes and wiping clean with a towel. If
biological residue remains on the outside of the filter, you may soak the assembly in a 1:1 dilution
of commercial bleach for 30 minutes and then rinse extensively by repeated (at least 5 times)
injections of purified (distilled or deionized) water through the filter to remove all traces of
chlorine bleach from the filter. The injections should be carried out by attaching the threaded
fitting of the 10 mL syringe assembly to the inlet of the filter, filling the syringe with water and
slowly pushing it through the filter.
CAUTION: If residual chlorine bleach is pumped into the analyzer, the cadmium column
may be damaged and system performance compromised. Be particularly careful about
thorough rinsing of the filter (at least five 10 mL aliquots of water from the syringe
assembly) if the use of chlorine bleach is required in the cleaning operation.
To begin your next deployment use the detailed instructions outlined in Sections 3 and 4 above.
YSI Environmental 57 Model 9600 Nitrate Monitor