Q150T Sample Preparation System10473 - Issue 5 62 Q150T - Instruction Manual7.5 Glow Discharge InsertThis section describes the installation of the glow discharge insert (Part No. 10837).WARNING – HIGH VOLTAGES AND HIGH VACUUMThis equipment produces high voltages and high vacuum in itsoperation.Figure 7-9. Glow discharge insert1. Check the machine is not operating.2. Press down firmly on the top cover to release the latch.3. Lift the top cover and rest it against its stop.4. Turn the two securing buttons to release and remove the installed insert (seeFigure 7-1).Q150T ES users only: If the insert is a carbon rod type you may haveto remove the rods first (see page 56). To do this, check that thesecuring buttons are restraining the insert and open the lid assemblyand rest it against the top cover assembly. Then, using a 2.5mm hexkey, release the rod clamping screws and withdraw the rods. Close thelid assembly and release the insert by turning the securing buttons.Now remove the insert.5. Prepare the glow discharge insert for installation by removing from any packaging,plastic bags etc. Check the ‘O’ ring in the outer ring of the lid assembly fordamage or debris and clean or replace as required.6. Remove the shutter by unscrewing the two retaining M3 screws (see Figure 7-10).Place the insert in position in the outer ring of the lid assembly carefully locatingthe M3 screw head in the rim of the insert in the slot to the right of the outer ring.7. Lock the insert in position by turning the securing buttons until their flangesoverlap the insert.8. Plug the insert lead into the socket on the hinge assembly.
