Flow Tube Assembly - Removal Checklist
H155936_3_003 47
9 Flow Tube Assembly - Removal
Checklist
9.1 Prepare the Flow Tube Assembly
Figure9.1: InsightMR Flow Unit Laboratory Setup
1. Stop the sample flow.
2. Rinse the sample line with a suitable solvent and switch the flow off.
3. Set the thermostat to ambient temperature; wait until the temperature is reached and
switch the thermostat off.
9.2 Remove the Flow Tube Assembly
1. Remove the flow tube assembly from the magnet.
2. Secure the flow tube assembly and transfer lines to a clamp stand, ideally in the fume
cupboard.
3. Disconnect the sample supply; connect a syringe to the outlet of the sample line and
empty the flow path by flushing the lines with air.
4. Disconnect the inlet of the temperature control line from the thermostat and empty the
liquid through the outlet into the thermostat.
5. Visually inspect the flow tube assembly looking for damages, contamination and leaks.
Clean or replace the glass flow tube sealing’s O-rings if necessary.
– The glass flow tube must not show any cracks or damages.
– No solid particles should be visible in the glass flow tube.
– No liquid should be visible behind the sealing O-rings.
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