Emerson Keystone EPI2 63 - Installation of the Keystone EPI2 Unit onto a Valve; Manual Operation

Installation, Operation and Maintenance Manual
MAN-10-04-100-0711-EN Rev. 0
October 2020
15
Installation
Section 4: Installation
4.4 Installation of the Keystone EPI2 Unit
onto a Valve
Move the valve to the completely open position. Manually bring the Keystone EPI2 to the
completely open position (verify the local mechanical indicator) and check the rotation
direction of actuator and valve. The actuator should be mounted for counter-clockwise
rotation to open and clockwise to close. The Keystone EPI2 unit can be installed onto the
valve in two different ways:
Direct mounting
Insert the valve shaft into the actuator bottom ange, taking care to correctly connect
the insert. Fix the screws on the valve ange to the actuator coupling block.
Bracket mounting
Install the bracket and the adapter onto the valve; then insert the valve shaft into the
actuator bottom ange, taking care to correctly connect the insert. Fix the screws
between the bracket and the valve ange and the actuator coupling block.
4.5 Manual Operation
Keystone EPI2 electric actuators are supplied with a handwheel for manual override
as standard, to operate the actuator in case of power supply failure or during setting.
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 maneuver 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