INFICON Front Load Single Sensor - Manual (Page 67)

4 - 3
PN
07
4-
15
6N
Front Load Single and Dual Sensors Operating Manual
2 Insert the tapered end of the crystal snatcher (PN 008-007) into the ceramic
retainer, see
Figure 4-1 (A), and apply a small amount of pressure. This locks
the retainer to the snatcher and allows the retainer to be pulled straight out.
See
Figure 4-1 (B).
Figure 4-1 Using the crystal snatcher
3 Invert the crystal holder and the crystal will drop out.
4 Prior to installing the new crystal, review section 4.1.1, Handle the Crystal with
Care, on page 4-1 .
5 Grasp the edge of the new crystal with a clean pair of Teflon tweezers. Orient
the crystal so the patterned electrode is facing up. Gently insert the edge of the
crystal beneath one of the wire segments that protrude into the crystal cavity.
Release the crystal.
6 Replace the ceramic retainer. Initially orient it at an angle to displace the spring
wire segments in the crystal holder.
CAUTION
Do not use excessive force when handling the
Ceramic Retainer Assembly since breakage may occur.
Always use the crystal snatcher.
To prevent scratching the crystal electrode, do not rotate
the ceramic retainer after installation.
7 Release the crystal snatcher with a slight side-to-side rocking motion. Using the
backside of the crystal snatcher, push on the ceramic retainer to ensure it is
completely seated.
8 Reinstall the holder in the sensor body; push the holder straight in making
certain that it is completely seated in the sensor body.
(A) (B)