Installing/mounting
4.4 Flange bolting, Flanged encapsulated antenna only
SITRANS LR250 (PROFIBUS PA)
24
Operating Instructions, 01/2014, A5E32221386-AB
Recommendations for flange bolting:
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Use cross-pattern sequence as shown
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Check uniformity of the flange gap
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Apply adjustments by selective tightening if required
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Torque incrementally until desired value is reached
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Check/re-torque after 4 to 6 hours
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Check bolts periodically, re-torque as required
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Use new lens, O-ring and spring washers after removal from installation.
For instructions on replacing the lens, see Part replacement (Page 159).