Instruction Manual
D200160X012
4195K Controllers
July 2018
58
Replacing the Supply Gauge, Proportional, Reset, Reset Valve, and Positive Feedback Tubing
Assemblies
WARNING
Refer to the Maintenance WARNING on page 51.
procedure.
2. Unscrew the nuts at each end of the tubing assembly. Remove the tubing assembly.
3. Install the replacement tubing assembly.
4. Set the reset adjustment to 0.01 (4195KB and KC controllers) and set the rate adjustment to OFF (4195KC
controllers).
5. Apply the correct supply pressure and check for leaks with the nozzle capped for full output pressure. Then, remove
the supply pressure.
6. Position the controller assembly in the case and start, but do not tighten the nine mounting screws. Slide the
controller assembly down to assure an O‐ring seal at the pressure connections along the bottom of the case. Hold
the controller assembly in place while tightening the nine mounting screws.
7. Perform the controller calibration procedures and, if necessary, the appropriate remote set point calibration
procedure in Section 3, 4, or 5.
8. Mount the controller as described in the Installation section.
9. Connect the external piping to the controller.
Replacing the Proportional Band Adjustment Knob, Nozzle Assembly, and Set Point Beam
Assembly
WARNING
Refer to the Maintenance WARNING on page 51.
Figure 6‐3 shows the parts locations for the proportional band adjustment and set point beam. Unless otherwise
noted, refer to this figure while performing the following procedures.
Disassembly
procedure.
for parts location.
3. Disconnect link 3 from the set point beam shoe, part of the set point beam assembly (key 23).
4. Remove the set point beam bias spring (key 28).
5. Remove the screw and washer (keys 19 and 20) that hold the adjustable set point pivot assembly (key 17) to the
frame and remove the pivot assembly.
6. Unscrew the nut that secures the relay nozzle tubing assembly (key 18) to the frame manifold (key 135).