Woodward Large Electric Sonic Valve II, Installation And Operation Manual, Page: 48 / 66

Manual 35076 LESV II
Woodward 46
Chapter 4.
Maintenance and Hardware Replacement
Maintenance
The only maintenance required for the Large Electric Sonic Valve is lubricating the ball screw and bearing
and inspecting the fuel overboard vent port every 12 months. For 2” LESV II, refer to Manual 35134. For
the 3”, 4”, and 6” LESV II, refer to Manual 35103.
With the exception of the SIL2 Flow Sensor, the LESV II is not designed with field-replaceable
components. Contact the turbine manufacturer (primary contact) or Woodward (secondary contact) for
assistance in the event there is a problem requiring service or replacement.
Hardware Replacement
EXPLOSION HAZARD—Substitution of components may impair
suitability for Class I, Division 2, or Zone 2.
To prevent possible serious personal injury, or damage to equipment,
be sure all electric power, hydraulic pressure, and gas pressure have
been removed from the valve and actuator before beginning any
maintenance or repairs.
Lift or handle the valve only by using the eyebolts (See Lifting
Procedures in Chapter 3).
Due to typical noise levels in turbine environments, hearing
protection should be worn when working on or around the Large
Electric Sonic Valve. Noise levels of greater than 90 dB are possible.
The surface of this product can become hot enough or cold enough
to be a hazard. Use protective gear for product handling in these
circumstances. Temperature ratings are included in the specification
section of this manual.
The LESV II contains a mechanical spring under load. Do not
disassemble, as this spring can cause bodily harm.
SIL2 Flow Sensor Replacement
For SIL2 Flow Sensor Replacement for the 2”, 3”, 4”, and 6” LESV II, refer to CMM-03010.
Released