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Stamoclean CAT430
Commissioning
Hauser
23
6.3
Checking the sampling quantity
1.
Switch off "Evacuate". Leave the controller switched on.
2.
Check that the sample is being supplied free of bubbles. Air bubbles can be seen in the
transparent filtrate hoses on the suction side of the pump.
3.
Measure the sampling quantity.
For this, use the prepared measuring cup. Measure the amount of sample that is supplied
within the period of 10 minutes.
4.
Calculate the filtrate output per hour.
Depending on the number of filter elements (one, two or four), the filtrate output must be at
450 or 900 ml/h (0.12 or 0.24 gal/hr).
5.
If necessary, correct the filtrate output by increasing the fluid quantity or extending the cycle.
6.4
Checking the sample transportation
Switch off "Control", remove the hose piece from the pressure side of the pump and reconnect the
filtrate hose to the measuring device.
Switch on "Control".
Measure the time that the sample requires from switching on the pump until arriving in the
collecting vessel at the measuring devices.
This time is the minimum delay time that passes between taking the sample and measurement.
Change the delay time by increasing the fluid quantity or extending the operating time of the pump.
!
Note!
At the same cycle duration, the delay time drops by a third when the operating time is increased by
50%.
6.5
Setting the collecting volume
In the following figure the collecting vessel is shown on the measuring device side.
The overflow hose (pos. 3) must be set such that the measuring devices suck just enough sample
out of the collecting vessel within a pumping cycle that the bottom is still covered and thereby no
air is sucked in.
For measuring devices working intermittently the collecting volume must always be larger than the
amount that can be sucked in by the measuring device in one go.
a0007247
Fig. 17:
Collecting vessel (measuring device side)
1
2
3
4
5
Measuring device suction hose
transparent PP cylinder
PE overflow hose
Pg hose gland
Filtrate hose from the pump box
1
2
3
4
5