Emerson Bettis SCE300 - Section 4: Installation; Checks to be Performed before Installation; Working Condition

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Installation and Maintenance Instructions
MAN-02-04-99-0712-EN Rev. 1
February 2020
Installation
Section 4: Installation
Section 4: Installation
4.1 Checks to be Performed Before Installation
To assemble the actuator onto the valve, proceed as follows:
• Check that the coupling dimensions of the valve ange and stem - or of the
relevant extension - are compatible with the actuator coupling dimensions
• Check that the electrical supply cables are suitable for the power rating
• Gather the necessary tools for the assembly and conguration of the actuator controls
• Lubricate the valve stem with oil or grease to facilitate assembly; be careful not to
contaminate the ange surfaces with lubricant (given that these surfaces transmit
torque from the actuator)
• Clean the valve ange and remove anything that might prevent perfect adherence
to the actuator ange (especially all traces of grease)
• Install the actuator onto the valve such that the shaft output drive enters the
groove of the stem extension. This coupling must take place using only force from
the weight of the actuator. When the actuator output shaft and the valve stem are
connected, check the holes of the valve ange; if they do not meet with the holes
of the spool piece ange or the stud bolts do not screw into them, the actuator
shaft output drive must be rotated. Rotate the handwheel until bolt circles align.
Tighten the nuts of the connecting stud bolts evenly
• If possible, operate the actuator to verify that it moves the valve smoothly
If a long storage period has occurred, prior to installing or re-installing the actuator:
• Check the condition of the O-ring seals
• Check for secure installation of the plugs or cable glands on the cable entries
• Check whether the enclosure covers or the actuator body are cracked or broken
4.2 Working Condition
Standard SCE300 actuators are suitable for the following environment temperatures:
• -25 °C to +70 °C (-13 °F to +158 °F)
Special versions are available for extreme environment temperatures:
• -40 °C to +70 °C (-40 °F to +158 °F)