Flow Tube Assembly - Insertion Checklist
44 H155936_3_003
8.2 Prepare the Flow Tube Assembly
1. Secure the InsightMR flow unit (flow tube assembly, transfer lines and flow interface)
against movements, with laboratory stands for example, ideally in a fume cupboard.
2. Inspect the flow unit, looking for damages, contamination and leaks. Clean or replace the
glass flow tube and/or the sealing O-rings, if necessary.
– The glass flow tube must not show any cracks or damages.
– No solid particles must be visible in the glass flow tube.
– No liquid must be visible behind the sealing O-rings.
8.3 Connect the Temperature Control Equipment (Optional)
1. Connect the thermostat to the in/outlet of the temperature control line.
2. Set the thermostat to the target temperature; start it and wait for the desired temperature
to be reached.
3. Ensure that at the set temperature the sample or reaction mixture is in solution.
4. Ensure that the set temperature is in the recommended range for the probe and the flow
unit.
5. Verify that the thermostatic liquid returns to the thermostat. Ensure that the liquid level
remains stable.
6. Check for leakages at the upper part of the tube holder.
7. Check that no liquid appears at the outlet of the transfer line (both sample lines and
temperature control lines). Ensure that the thermostatic liquid does not leak into the
sample line.
8.4 Connect the Sample Supply (Reactor or Equivalent)
1. Connect the sample supply (reactor or equivalent) to the pump and the pump to the inlet
of the flow interface.
2. Connect the flow interface valve output back to the sample supply or to waste.
3. Set the pump to the highest planned flow rate.
4. Add solvent to the sample supply (reactor); start the pump and check the flow rate at the
outlet.
5. Check for leakages along the flow tube assembly paying close attention to all O-rings and
seals in the glass flow tube.
6. Check that there are no bubbles in the glass flow tube.
7. Test the desired experimental conditions (temperature, pressure, reaction mixture) outside
the magnet first.
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