Flowserve 035 300 Series - Manual (Page 5)

5
Flow Control Division
Kammer Control Valves
11.00
REMOVE AND INSTALL ACTUATOR
General Information
We recommend separating the actuator from the
valve during all repair work. However, many
maintenance and adjusting operations can be carried
out in an installed condition.
3.1 Remove actuator
(see Fig. 1)
3.1.1 Shut off air supply.
WARNING: Depressurise the line to atmospheric
pressure and drain all fluids from the valve before
working on the actuator. Failure to do so can cause
serious injury.
3.1.2 Disconnect all tubing.
3.1.3 Remove 2 screws and remove coupling.
3.1.4 Remove yoke rod retaining nuts and lift actuator
assembly from the valve.
3.1.5 Remove coupling insert and it’s locknut from plug
stem.
Attention: Ensure that the plug assembly is not
rotated with the plug seated. This may cause
irreparable damage to the seating faces.
3.2 Install actuator
(see Fig. 1)
The actuator stem must be fully extended:
Actuators with air-to-open action must be fully
vented. Actuators with air-to-close action apply
supply pressure.
Manually depress the plug stem to ensure the plug is
fully seated.
3.2.1 Screw coupling insert locknut and coupling insert as
far as possible onto plug stem.
3.2.2 Place the actuator assembly on the valve engaging
the yoke rod threads in the lower yoke plate and
ensuring the actuator faces in the correct direction.
3.2.3 Unscrew the coupling insert until the yoke rods are
raised from the lower yoke plate by around 2 mm.
Attention: Ensure that the plug assembly is not
rotated with the plug seated. This may cause
irreparable damage to the seating faces.
3.2.4 Refit the coupling, ensuring that the arrows, embossed
on the coupling halves, point upward towards the
actuator, and secure with 2 retaining screws.
3.4.5 Apply supply pressure resp. vent actuator to half stroke
and refit and tighten yoke rod retaining nuts (15).
3.4.6 Connect all tubing.