Hardware manual

4-56 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
Refitting the Torch
To place the torch back in the instrument, complete the following steps:
1 Place the torch in its holder.
With the auxiliary gas fitting on top of the torch, carefully slide its open end
inside the work coil and at the same time align the projection for the torch
stand into the torch stand hole. Refer to Figure 58 showing how the
projection for torch stand aligns with the torch stand hole. The end of the
middle, or auxiliary, tube will be 1 to 2 millimeters from the top of the work
coil, as shown in Figure 60. Close the quick- release clamp over the torch.
Figure 60 Position of Torch Inside Work Coil
CAUTION
Difficulty in igniting the plasma or melting of the torch may be experienced if the
position of the torch is too far or too close.
Also if the central tube of the torch may become clogged or deformed if a sample with a
high sodium concentration is introduced.
1~2 mm