Hardware manual

4-28 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
3 Disconnect and check the gas hoses and sample tube.
Remove the quick- connect fittings. Carefully twist the hoses off the end cap
and nebulizer (Figure 44). If makeup gas is being used, remove that clamp
and hose. Otherwise, unscrew the gas plug and disconnect the sample tube.
As you remove the gas hoses and the sample tube, check them for damage
such as splitting, pinches or deterioration. Replace if needed.
4 Remove the spray chamber retaining bracket.
The cooling block is located in the open area on the left of the instrument.
Loosen the two screws on the top cover of the cooling block and remove the
cover.
5 Remove the spray chamber with the end cap.
Lift the spray chamber out of its mounting block.
6 Disconnect the end cap and nebulizer.
Do not touch the nebulizer tip, as it is fragile. Remove the end cap from the
spray chamber by gently twisting it while pulling on it. Refer to
“Disconnecting the Babington Nebulizer from the End Cap”.
CAUTION
Remove the spray chamber from the cooling block before removing the end cap.