Hach BioTector B7000 User Manual page 70

If a SAMPLER has been supplied with the system, connect the sampler in accordance with
the drawings and instructions in the sampler manual.
Connect the PVC-U Drain Pipe (installed outside the BioTector) to a well ventilated pressure
free drain using the supplied 1" braided hose.
Confirm the SAMPLE OUT port is connected to the PVC-U Drain Pipe. If the PVC-U Drain
Pipe is not used, connect the SAMPLE OUT with ¼" PFA tube to well ventilated pressure free
drain. The tube should be fitted so that it cannot freeze in cold weather.
Confirm the sample BYPASS port is connected to the PVC-U Drain Pipe. If the PVC-U Drain
Pipe is not used, connect the sample BYPASS port with ¼" PFA tube to a large diameter
tube, as shown in drawing 81104041. The end of the sample bypass tube should be level
with the centre of the Sample (ARS) Valve. The large diameter tube should be connected to a
pressure free drain. The end of the sample bypass line should not be under the surface of the
water in the drain at any time. The tube should be fitted so that it cannot freeze in cold
weather.
If BioTector is built as a TC - TIC system, confirm the TIC DRAIN port is connected to the
PVC-U Drain Pipe. If the PVC-U Drain Pipe is not used, connect the TIC DRAIN port (TIC
Sample Out port) with ¼" PFA tube to well ventilated pressure free drain. The tube should be
fitted so that it cannot freeze in cold weather.
If fitted, connect ¼" PFA tube to the MANUAL or CALIBRATION ports. Remove all tapes
placed around the fittings for shipment.
If the BioTector is supplied as a "purge ready" system (
), connect the -20°C dew point, oil, water and dust free purge air to the BioTector.
and vent ports
The purge air is instrument air which is typically at 100 L/min flow, and filtered with a 40
microns or smaller filter. Drill and connect the air inlet port to the top left hand side of the
upper enclosure. Drill and install an air outlet port "vent" to the bottom left hand side of the
lower enclosure.
Additional requirements for the TN system (next 5 items):
Confirm the TN DRAIN port is connected to the PVC-U Drain Pipe. If the PVC-U Drain Pipe is
not used, connect the TN DRAIN port with 1/8" PFA tube to a suitable pressure free drain.
The drain must be connected so that the end of the tube is never under the surface of the
liquid in the drain. The tube should be fitted so that it cannot freeze in cold weather.
Confirm the TN BYPASS port is connected to the PVC-U Drain Pipe. If the PVC-U Drain Pipe
is not used, connect the TN BYPASS port with 1/8" PFA tube to a suitable pressure free
drain. It is recommended to keep this tubing as short as possible. The drain must be
connected so that the end of the tube is never under the surface of the liquid in the drain. The
tube should be fitted so that it cannot freeze in cold weather.
Connect the TN Cleaning solution (consisting of a mixture of 0.5N HCl and 1000mgC/l
sodium oxalate) to the BioTector's TN CLEANING port using 1/8" PFA tube. TN Cleaning
solution is used to clean the measuring cells and lines. A 25 liter container will last
approximately 150 days.
Connect Deionised Water to the BioTector's DI WATER port using 1/8" PFA tube. DI Water is
used to wash the measuring cells, and to get a DI Water reference reading at regular
intervals.
i.e. if the BioTector is supplied without any fan
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