Instruction Manual
D200160X012
4195K Controllers
July 2018
94
6. Lift out the remote set point assembly by holding the tie bar (key 106), mounting plate (key 111), travel stop
(key 83), or pedestal assembly (key 105).
7. Align the replacement assembly with the mounting screw holes. Replace the mounting screws.
8. Reconnect the remote set point pressure connection union (key 93). Apply full remote set point pressure and check
for leaks.
9. Connect link B (key 126) to the connecting hole on the set point indicator.
10. Replace the supply pressure gauge.
11. Perform the remote set point maintenance calibration procedure. Perform the appropriate process indicator zero
and span calibration and flapper alignment procedure in Section 3, 4, or 5.
Replacing Remote Set Point Assembly Parts
WARNING
Refer to the Maintenance WARNING on page 51.
CAUTION
Avoid bending or kinking the drive flexure during the following procedures. Bending or kinking the drive flexure can result
in product damage, as well as impaired performance.
Figure 6‐23 shows the parts and adjustment locations. Refer to figure 7‐6 for key number locations.
Replacing Pivot Assembly A (Key 114)
1. Decrease the remote set point pressure to 0 bar (0 psig).
2. Remove the two screws (key 103) and remove the tie bar (key 106).
3. Note where link A is connected. Disconnect link A (key 116) from the lever arm on pivot assembly A (key 114).
4. Disconnect the drive flexure (key 79) from the adjustment arm of pivot assembly A. Be careful not to bend or kink
the drive flexure.
5. Remove the screw (key 122), washer (key 123), and nut (key 124) that attach the guide flexure (key 119) to the top
of the pivot assembly.
6. Remove the pivot screw and spring washer (keys 109 and 112) and the mounting screw (key 102) attaching the
pivot assembly to the mounting plate (key 111). Lift out pivot assembly A.
7. Loosen the adjustment screw (key 118) on the adjustment arm of the replacement pivot assembly, and set the arm
to the same length as the arm on the pivot assembly being replaced. Tighten the screw.
8. To replace the pivot assembly, first put the spring washer (key 112) on the screw (key 109). Then, insert the screw
through the replacement pivot assembly and into the mounting plate and tighten. Install the mounting screw (key
102) and tighten.
9. Connect the guide flexure (key 119) to the top of the replacement pivot assembly with the screw (key 122), washer
(key 123), and nut (key 124) as it was before. The guide flexure should be straight and horizontal as shown in figure
6‐23. If not, loosen the screws (key 122) and retighten to eliminate any bowing. Loosen the screws (key 139) and
raise or lower the pedestal assembly (key 105) to get the link horizontal. Retighten the screws (key 139) and ensure
the diaphragm assembly extension (key 134) is centered in the upper travel stop (key 83) hole.
