4
Storage
Storage
If the actuators are scheduled for installation at a
later date:
a. The actuator should be placed in a clean and
dry place, and protected from the weather and
extreme vibration.
b. If actuator needs to be stored outside, it must
be protected from excess moisture, dust, and
weather.
Rotork cannot accept responsibility for deterioration
caused on-site once the covers are removed.
Every Rotork actuator has been fully tested before
leaving the factory to give years of trouble free
operation providing it is correctly commissioned,
installed and sealed.
Lubrication
The gear train has been lubricated during assembly
for the life of the actuator.
Installation
a. Before mounting actuator, verify that the
torque requirement is less than the output
torque of the actuator.
Mounting the actuator
The ROM actuator is suitable for quarter turn non
thrust applications. Ensure the valve is secure before
fitting the actuator, as the combination may be top
heavy and therefore unstable.
A suitable mounting flange conforming to ISO5211
or USA Standard MSS SP101 must be fitted to the
valve. Refer to label for conformation of output
flange details.
ROM can be supplied with adaptors to reduce
the size of the output drive square. The square
insert is fitted into the output drive. All ROM
actuators can be supplied with blank drive
bush. This is machined to suit the valve stem as
shown in the picture.
Actuator to valve fixing must conform to:
Material Specification ISO Class 8.8, yield strength
628 N/sq mm.
WARNING: Do not lift the actuator and
valve combination via the Actuator. Always lift
the valve/actuator assembly via the valve.
Before engagement, ensure that the actuator and
valve are in the same position (e.g. closed) and the
drive spline matches the stem position. Actuator
position can be determined using the local indicator
and if necessary can be moved using the manual
input drive. Secure the actuator with appropriate
fixing bolts. It may be necessary to adjust the
stop blots to enable sufficient travel. Ensure the
mounting bolts are tight.
