Flowserve Mechanical and Hydraulic - Manual (Page 16)

Mechanical and Hydraulic Overrides FCD LFENIM0004-00-AQ – 05/15
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3
Hydraulic Manual Overrides
Hydraulic Manual Overrides of LFPS heavy duty actuators provides a low-effort and high-thrust compact sized override for manually
operating the actuator. The LFPS Hydraulic Manual Overrides are designed in accordance with EN 12570 and the manual operation
shall be completed with a force applied to the lever that does not exceed values stated in EN 12570.
a CAUTION: Prior to locally operating the valve and actuator by mean of manual overrides, remove the pressure inside the cylinder,
and ensure that the cylinder has been vented through the venting ports. Ensure that all vent valves are in vent position. The
number of these valves varies as per the actuator and control schematic types.
3.1 Hydraulic Hand Pump Manual Override (-HP)
The hydraulic override consists of a power pack with hand-lever-operated high pressure pump connected with stainless steel tubing to
a hydraulic cylinder.
Figure 10 – Hydraulic Hand Pump Manual Override
The Hydraulic Hand Pump Manual Override option is available for all models of the LPS Pneumatic and LHS Hydraulic Actuators
series, both single-acting and double-acting versions.
Travel Stop
Seal Nut