INFICON XTC/C Thin Film Deposition Controller - Manual (Page 160)

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XTC/C - XTC/2 Operating Manual
6.3.5 Leaf Spring Concerns
Spring conditions should be observed as part of the routine maintenance
interval. Insufficient bends or deformities in the spring contacts in the sensor
body are common causes of crystal problems. Lift each leaf spring up
approximately 60°. See
Figure 6-2 .
Figure 6-2 Shaping the Leaf Spring
60°
Leaf
Spring
Avoid kinking
leaf spring