Hach BioTector B3500dw User Manual page 70

Confirm that the Sample Valve is working.
If installed, confirm that all other valves (e.g. multi-stream valve) are working.
Check the air supply pressure. The set point pressure should be 1.5 bar. When the oxygen
concentrator is running, the pressure typically cycles from 1.5 bar to 0.9 bar. Check the O2
PRESSURE SENSOR in O2-Controller Status menu. The pressure should be between 390
mbar and 400 mbar at the idle 1 l/h "Mass Flow Controller" MFC FLOW. At 60 l/h MFC
SETPOINT flow, the pressure should not be less than 320 mbar. See Section
Oxygen Controller Status
Oxygen Purity Test: Power up the system for at least 10 minutes before the oxygen purity test is
carried out. Using the Simulate menu (see Section
table 2 in Section 4.1.1 Analysis
analyzer for 5 minutes. At the end of this period, the CO
should be within ±0.5% of full scale of the CO
range is 10000ppm, then the CO
CO2 Analyzer menu (see section
(If the CO analyzer zero reading is outside the specifications, confirm that there is no CO
2
filter "used with the sodium hydroxide reagent container" between the Cooler and
by connecting the CO
2
CO analyzer inlet port and set the MFC to 10 l/h. As the size of the CO
2
flow running for at least for 5 minutes and record the CO
the CO zero readings do not drop significantly with the CO
2
CO contamination in the oxygen supply.)
2
3. PUMP TESTS:
Caution! Below procedures involves handling strong acid and base reagents. Necessary safety precautions,
such as wearing eye protection and gloves, should be taken throughout these tests.
Go to Zero Calibration menu and select RUN REAGENTS PURGE function to prime the pumps.
The factory Reagents Purge settings to prime reagents typically cover ~3 meters distance
between the reagent containers and the BioTector. If it is necessary to increase the reagent purge
times, see section 8.3.4.4Reagents Purge
(If the reagent lines do not fill during the Reagents Purge cycle, stop the BioTector to prime the pumps
manually. Remove the dip tubes from the reagent containers, and seal the containers. Place the dip tubes
into a small container containing DIW. If DIW is not available use tap water. Raise the container above the
height of the BioTector. Go to Zero Calibration menu and select RUN REAGENTS PURGE function to prime
the pumps. Once the pumps have been primed, reinstall the dip tubes into the reagent containers and repeat
the Reagents Purge cycle.)
Confirm the Acid Pump is pumping correctly using a 10ml graduated cylinder. Run the Acid Pump
in Simulate menu. Acid Pump rate for FMM20 Pump at 400 pulses should be between 4.20 ml
and 3.80 ml.
(Depending on the quantity of the liquid injected into the reactor and due to an internal system
interlock, the system may request the activation of Reactor Purge cycle to purge any excess liquid from the
reactor. If necessary run "REACTOR PURGE" function in the same menu.)
Confirm the Base Pump is pumping correctly. Base Pump rate for FMM20 Pump at 400 pulses
should be between 4.20 ml and 3.80 ml.
Important Note: For the correct operation of the system, the measured Acid and Base Pump rates must be
identical or similar. The maximum allowable difference in the measured volumes for acid and base injections
above should not be more than 0.2ml.
Confirm the WMM60 Sample Pump is pumping correctly. The pump rate at 16 pulses should be
between 5.5ml and 7.5ml in ~8 seconds.
when the zero and span calibration is carried out.)
for details.
8.1.2
Enclosure) flow to 10 l/h and flow oxygen gas through the CO
analyzer range. For instance, if the CO
2
analyzer zero reading should be typically within ±50ppm. Go to
2
8.3.10 CO2 Analyzer) to view the CO
zero readings at the end of the 5 minute period. If
2
2
for details.
(Any variation between these pumped volumes is corrected
Simulate) set the MFC (see figure 2 and
analyzer zero reading (ppm CO2)
2
Analyzer Range.
2
filter is small, keep the 10 l/h gas
2
filter in place, this will indicate that there is no
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8.1.6
2
analyzer
2
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in the oxygen gas
2
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