16
February 2020
Installation and Maintenance Instructions
MAN-02-04-99-0712-EN Rev. 1
Installation
Section 4: Installation
4.5 Manual Operation
The SCE300 actuator is supplied with a handwheel for manual override as standard, to operate
the actuator in cases of power supply failure or during actuator conguration. The handwheel
is always engaged; for safe operation, the handwheel does not rotate during electric operation.
Turn the handwheel clockwise to close and counter-clockwise to open. During manual
operation, check the actuator's motion or stroke on the local mechanical indicator.
WARNING
Do not manually operate the actuator with devices other than the handwheel. Using
cheater bars, wheel wrenches, pipe wrenches, or other such devices on the actuator
handwheel may cause serious personal injury and/or damage to the actuator or valve.
Figure 7 Manual Operation
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