August 2015
Service Instructions
137462E Rev. D
20
Section 4: Actuator Testing
Actuator Testing
4.1.8 Apply a leak testing solution to the following areas:
4.1.8.1 Cylinder to end cap joint. Checks O-ring seal (5-10) on CBA730 or checks
O-ring seal (5-15) on CBA830, CBA930 and CBA1030 actuators.
4.1.8.2 Housing adapter (6-10) inlet port hole. Checks the piston to cylinder seal
(5-40) and piston to center bar seal (5-25).
4.1.8.3 End cap stop screw or M3 jackscrew O-ring seal.
4.1.8.4 Remove pressure from pressure inlet port in the end cap (4-20).
4.1.9 If an actuator was disassembled and repaired as a result of this procedure, the
above leakage test must be performed again.
4.1.10 Shell Pressure Test - Optional pressure test could be performed on PED certied
actuator by applying pressure to both sides of the piston simultaneously for a
period of two (2) minutes. If any leakage occurs across a static seal, the unit must
be disassembled and the cause of leakage determined and corrected.
WARNING: PED PRESSURE TESTING
The actuators main pressure bearing parts will be tested in controlled conditions in
accordance with the requirement of PED by pressuring both sides of the piston to avoid
damage and over torquing of the actuator components. If further future testing in the eld
is necessary, Emerson should be contacted for guidance.
4.1.11 After the actuator is installed back on the valve, all accessories should be hooked
up and tested for proper operation and replaced, if found defective.
To Next Page
Loading...
