INFICON Crystal 12 Sensor - Manual (Page 51)

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Crystal12 Sensor Operating Manual
9 Fasten the replacement bellows assembly to the carousel housing weldment
(item 14,
Figure 1-5 on page 1-8 ) utilizing the two #4-40 x 1.125 long screws
(item 9, Figure 1-4 on page 1-7 ). Do not tighten the screws. Position the
Bellows assembly in such a fashion as to allow the actuator stem to come in
contact with the ball bearings (item 19,
Figure 1-4 on page 1-7 ) as illustrated in
Figure 4-2 on page 4-4 ). Tighten the screws.
10 Attach the loop of the Extension spring to the hole provided in the Pawl of the
Pawl and Actuator assembly.
11 Position the Ratchet (item 29, Figure 1-5 on page 1-8 ) such that it engages the
pin of the Pawl and Actuator Stem Assembly.
12 Position the detent (item 25, Figure 1-5 on page 1-8 ) so that it engages the
Ratchet (item 29, Figure 1-5 on page 1-8 ).
The unit is now ready to be aligned, refer to section 4.3 on page 4-2 for alignment
instructions.
4.3.4 Replacing the Electrical Connection Assembly
Replace the electrical connection assembly with INFICON part number
750-649-G1.
NOTE: Contact INFICON for pricing and availability of new and refurbished
assemblies.
The recommended replacement interval for the electrical connection assembly is
two years, based upon five revolutions per week of the carousel.
4.3.4.1 Equipment Required
Š 3/32" Allen wrench
Š #1 Phillips screw driver
4.3.4.2 Procedure
Reference Figure 1-5 on page 1-8 and Figure 1-6 on page 1-9 .
1 Remove the #4 fasteners (item 7) that secure the actuator cover (item 22) to
the carousel housing weldment (item 14).
2 Remove the actuator cover.
3 Unthread the in-vacuum sensor head cable from the electrical connector.
4 Remove the two #4 Phillips flat head screws (item 8) that secure the electrical
connector assembly (item 16) to the carousel housing weldment.
5 Remove the electrical connector assembly and install the replacement
assembly utilizing the two #4 Phillips flat head screws.
6 Re-attach the in-vacuum head cable to the electrical connector.
7 Reinstall the actuator cover.