Emerson Rosemount 3051S Reference Manual page 57

Reference Manual
00809-0100-4804, Rev AA
January 2011
Reassemble the Process
Flange
Rosemount 3051S ERS System
3051S ERS Secondary (Junction Box)
1. Apply a light coat of low temperature silicon grease to the SuperModule
connector.
2. Insert the SuperModule connector into the top of the SuperModule.
3. Push the terminal block into the housing and hold for screw position
alignment.
4. Tighten the captive mounting screws.
5. Attach the Junction Box housing cover and tighten so that metal contacts
metal to meet explosion-proof requirements.
NOTE
If the installation uses a manifold, see "Rosemount Manifolds" on page 2-21.
1. Inspect the SuperModule PTFE o-rings. If the o-rings are undamaged,
reusing them is recommended. If the o-rings are damaged (if they have
nicks or cuts, for example), replace them with new o-rings.
NOTE
If replacing the o-rings, be careful not to scratch or deface the o-ring grooves
or the surface of the isolating diaphragm when removing the damaged
o-rings.
2. Install the process flange on the SuperModule. To hold the process
flange in place, install the two alignment screws to finger tight (screws
are not pressure retaining). Do not over-tighten; this will affect
module-to-flange alignment.
3. Install the appropriate flange bolts.
a. If the installation requires a
1.75-in. flange bolts. Go to step d.
b. If the installation requires a
2.88-in. process flange/adapter bolts and two 1.75-in. bolts. Go to
step c.
c. Hold the flange adapters and adapter o-rings in place while
finger-tightening the bolts. Go to step e.
d. Finger-tighten the bolts.
e. Tighten the bolts to the initial torque value using a crossed pattern.
See Table 4-1 on page 4-12 for appropriate torque values.
f. Tighten the bolts to the final torque value using a crossed pattern.
See Table 4-1 for appropriate torque values. When fully tightened,
the bolts should extend through the top of the module housing.
g. If the installation uses a conventional manifold, then install flange
adapters on the process end of the manifold using the 1.75-in. flange
bolts supplied with the 3051S ERS sensor.
/ -18 NPT connection(s), use four
1
4
/ –14 NPT connection(s), use two
1
2
4-11