Figure 25 - Hardware Location To Remove The Meter Assembly - Honeywell ST 800 User Manual

Please take appropriate steps to avoid ESD damage when handling the
Communication and Display Module assemblies
5. If a display is present, press the two snaps along the side, and remove it from the
communication module assembly.
Note: Do not discard or misplace the Display/Communication connector, it will be required
to reassemble the Display Module
6. Loosen the two retaining screws, and remove the Communications Module assembly, and
remove the Communication Module assembly from the electronics housing.
7. Disconnect the Sensor Cable from the Communications Board.
8. Refer to Figure 25 . Use a 2 mm hex wrench to completely loosen the set screw on the
outside of the housing to permit rotating the meter body.
Figure 25 – Hardware Location to Remove the Meter Assembly
9. Carefully turn the complete meter body counterclockwise to unscrew it from the electronics
housing.
10. Remove the nuts from bolts that hold the process head(s) to the Meter Body.
11. Remove process heads and bolts.
12. Remove the gaskets or O-rings from the process heads.
13. Clean the interior of the process head(s) with a soft bristle brush and suitable solvent.
CAUTION
To prevent damage to the diaphragm in the Meter Body, use extreme care when
handling or placing the Meter Body on any surface. Carefully assemble gaskets or
O-rings to the meter body. If installing O-rings, lubricate with water or leave dry.
14. Coat threads on process head bolts with anti-seize compound such as "Neverseize" or
equivalent.
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ST 800 SmartLine Pressure Transmitters User's Manual
Revision 10