What to do if my Emerson Bettis CBA930-SR has a short stroke?
If the Emerson Controller has a short stroke, check the position of the travel stops and readjust as necessary. If there is hardened grease, dismantle, remove any hard grease, relubricate, and reassemble. If there is debris left in the cylinder or housing during maintenance, disassemble the cylinder assembly to remove the debris, then reassemble it.
Why does my Emerson Bettis CBA930-SR Controller have a lack of torque?
If your Emerson Controller seems to lack torque, first ensure the supply pressure is above the minimum operating pressure of the actuator and that the output torque produced at the supply pressure exceeds the valve torque demand. Also, check and adjust the speed controls to increase flow. Clean or replace the exhaust port silencers if the exhaust port is blocked. Examine the pipe work for blockages, crushed pipe, or leakage, and clear or replace as necessary. Examine the controls and refurbish or renew them as needed. If the piston, rod, or housing seal is defective, dismantle the cylinder/housing assembly, remove the defective seal, fit a new one, and reassemble.
Why is my Emerson Controller moving erratically?
If your Emerson Controller is showing erratic movement, check the operating medium for consistent supply pressure and correct as necessary. If the lubrication is inadequate, dismantle, relubricate, and reassemble the unit. Inspect for worn parts by dismantling and visually inspecting for significant wear; actuator replacement may be required.
General| Brand | Emerson |
|---|---|
| Model | Bettis CBA930-SR |
| Category | Controller |
| Language | English |
Initial steps for taking the actuator apart.
Specific instructions for disassembling the spring cylinder.
Detailed steps for removing the housing components.
Preparation and common steps for reassembling the actuator.
Instructions for putting the housing parts back together.
Steps for reassembling the spring cylinder assembly.
Procedures for leak testing and functional verification.
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