Flowserve Mechanical and Hydraulic - Manual (Page 10)

Mechanical and Hydraulic Overrides FCD LFENIM0004-00-AQ – 05/15
10
Figure 4 – Detail of LPS Double-Acting with Enclosed Jackscrew Override (Declutchable)
2.1.3.2 Restoring Automatic Operation
To restore automatic operation:
2.1.3.2.1 Operate the handwheel in order to move the valve to the desired position.
2.1.3.2.2 Rotate the lever on the manual override to the “DISENGAGED” position, and lock it with the safety lock 1 .
2.1.3.2.3 Restore the supply pressure inside the actuator cylinder.
2.1.3.2.4 Operate actuator normally with supply pressure.
2.1.3.2.5 Check that the actuator is able to reach the fully closed and open position.
1 The safety lock is only available upon request. Please contact your local Flowserve Limitorque Representative for more information.
2.2 Not Enclosed Jackscrew Manual Override (-JL)
The Not Enclosed Jackscrew is a direct operating handwheel, which means that a rotating screw can be fitted either on the cylinder
side (single-acting actuators LPS/LPC series, double-acting actuators LPC series) or on the scotch-yoke housing (double-acting
actuators LPC series). The rotation of the handwheel in clockwise (CW) or counterclockwise (CCW) directions will cause the
consequent rotation of the scotch-yoke mechanism and the stem of the valve which the actuator is fitted on.