Capsular Element Controller Maintenance Calibration; Precalibration Procedure; Aligning The Drive Bracket Assembly - Emerson Fisher KC Series Instruction Manual

4195KA, KB, KC, and KS Controllers
link 5, and move the process pointer to the
mid-scale mark of the process scale span. Tighten
the screw.
8. Perform the controller calibration procedures and,
if necessary, the appropriate remote set point
calibration procedure in Section 3, 4, or 5.
Capsular Element Controller
Maintenance Calibration
WARNING
Refer to the Maintenance WARNING
on page 6-1.

Precalibration Procedure

1. Remove the two machine screws (key 6) and lift
off the proportional band indicator cover (key 36).
2. Set the proportional band adjustment between
DIRECT and REVERSE.
3. Remove the two screws (key 103) and remove
the tie bar (key 97) from the capsular element
assembly.

Aligning the Drive Bracket Assembly

Refer to figures 6-22 and 7-5.
1. With an Allen wrench, loosen the set screw in the
hex nut of the drive bracket assembly (key 84).
2. Loosen the screw (key 98) that holds the guide
flexure to the tab on the mounting plate (key 77).
The guide flexure location is shown in figure 6-22.
3. Apply process pressure equal to 75 percent of
the capsular element range.
4. Slide the drive bracket assembly (key 84) along
the diaphragm capsule extension (key 82) until the
guide flexure is aligned with the center of the long
pivot clevis assembly (key 78).
5. Tighten the machine screw (key 98) and the set
screw in the hex nut to fasten the drive bracket
assembly in that position.
Setting the Capsular Element Travel Stops
1. For the full span stop—Apply process pressure
equal to 5 percent greater than capsular element
range. Then perform the following as appropriate:
6-32
VIEW A-A
DIAPHRAGM
ASSEMBLY
EXTENSION
GUIDE
FLEXURE
A
LONG
PIVOT
SHORT
PIVOT
58A0708-E
A6946 / IL
Figure 6-22. Process Input Capsular Element Assembly Part
and Adjustment Locations (Positive and Compound Pressure
Element Shown)
Instruction Manual
Form 5207
April 2007
TRAVEL
STOP
NUT
DRIVE
BRACKET
TRAVEL
STOP
VIEW A-A NUT
DRIVE
FLEXURE
TRAVEL
STOP
A
LINK 5
LINEARITY
ADJUSTMENT
LINK 1