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Service and maintenance
7.3 Inner gasket replacement
7.3
Inner gasket replacement
Should it ever be necessary to replace the sensing head inner gasket, refer to the Sensing head
(Page 13) and Dimension drawings (Page 43) sections of this instruction manual prior to
performing the following procedure.
1. Remove the WFS320 fibreglass cover (10 bolts).
2. Bolt down the viscous damper cover to the shipping position (2 bolts).
3. Remove the sensing plate from the sensing head.
4. Remove the inner retaining ring (6 bolts).
5. Remove the upper and lower hinge block bolts (4 per block).
6. a. Hazardous versions, remove the LVDT core and LVDT (3 bolts), or
b. Non Hazardous, remove the LVDT cable TY WRAPs (2) and disconnect LVDT
connections.
7. While supporting the main assembly, remove the secondary static beam bolts (3 per side).
8. Draw the main assembly away from the main frame.
Note
The main assembly is heavy and awkward to handle; ensure it is supported well.
9. Remove the outer retaining ring and inner gasket (8 bolts).
10. Install the new inner gasket and reverse the procedure (steps 1 through 9).
11. Perform the LVDT output zero procedure.
12. Referring to the integrator instruction manual, perform an integrator zero and span
calibration. Perform a span adjust if calibration accuracy appears affected.
7.4
Technical support
If you have any technical questions about the device described in these Operating Instructions
and do not find the right answers, you can contact Customer Support:
● Via the Internet using the Support Request:
Support request (http://www.siemens.com/automation/support-request)
●
Via Phone:
– Europe: +49 (0)911 895 7222
– America: +1 423 262 5710
– Asia-Pacific: +86 10 6475 7575
Further information about our technical support is available on the Internet at
Technical support (http://support.automation.siemens.com/WW/view/en/16604318)
32
Operating Instructions, 02/2016, A5E32880290-AB
SITRANS WFS320
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Troubleshooting
