00809-0100-4835 Rev BE
Maintenance & Troubleshooting
Process Flange Reassembly
1. Replace the process c-rings (9) with new c-rings if the
flange (10) was removed. Carefully place one c-ring in
each of the two weld rings located on the isolating
diaphragms of the sensor module (8) as shown in
Figure 5-12.
2. Carefully place the process flange on the sensor
module. Take care not to disturb the c-rings or
damage the isolating diaphragms.
Figure 5-12 – Process C-rings
3. With the process flange sitting securely on the sensor
module, install two flange cap screws (13) into the
flange location shown in Figure 5-13. Install the cap
screws finger tight.
4. Place the four bolts (11) through the process flange
and screw them on finger-tight.
5. Using a hand torque wrench, evenly seat the flange
onto the sensor module by following steps 6 through 9
(see Figure 5-13 to identify the bolts).
6. Alternately tighten the four bolts in the sequence
shown in Figure 5-13 to 150 in-lbs ±15 in-lbs (16.9 N-
m ± 1.7 N-m)
7. Repeat step 6.
8. Repeat step 6 at 300 in-lbs ± 25 in-lbs (33.9 N-m ± 2.8
N-m)
9. Repeat step 8.
10. Torque the two cap screws in the flange to 33 in-lbs ±
1.7 in-lbs (3.7 N-m ± 0.2 N-m). NOTE: Cap screws
must be torqued after bolts, or they will loosen.
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