Flowserve Valtek VL-ES Actuators - Manual (Page 3)


Valtek VL-ES Actuators FCD VLENIM0114-00 – 09/06
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1 General Information
1.1 Using
The following instructions are designed to assist in disassembling, reassembling and troubleshooting
Flowserve Valtek valves equipped with VL-ES actuators. Separate installation, operation and mainte-
nance instructions cover additional features (such as handwheels, limit stops, fail-safe systems, limit
switches or positioners). Product users and maintenance personnel should thoroughly review this
bulletin in conjunction with any handwheels or other accessory equipment before installing, operating or
performing any maintenance on the valve. In most cases, Flowserve valves, actuators and accessories
are designed for specific applications (e.g. with regard to medium, pressure, temperature). For this
reason they should not be used in other applications without first contacting the manufacturer.
1.2 Applicability
The following instructions are applicable to the maintenance and installation of VL-ES actuators
only. This document should be used in conjunction with the appropriate Installation, Operation and
Maintenance Instructions specific to the model of the valve on which the actuator is installed.
1.3 Terms Concerning Safety
The safety terms DANGER, WARNING, CAUTION and NOTE are used in these instructions to highlight
particular dangers and/or to provide additional information on aspects that may not be readily apparent.
DANGER: indicates that death, severe personal injury and/or substantial property damage will occur
if proper precautions are not taken.
WARNING: indicates that death, severe personal injury and/or substantial property damage can
occur if proper precautions are not taken.
CAUTION: indicates that minor personal injury and/or property damage can occur if proper precau-
tions are not taken.
NOTE: indicates and provides additional technical information which may not be obvious, even to
qualified personnel.
Compliance with other notes, which may not be particularly emphasized, with regard to transport,
assembly, operation and maintenance and with regard to technical documentation (e.g. in the operating
instructions, product documentation or on the product itself), is essential in order to avoid faults, which,
in and of themselves may directly or indirectly cause severe personal injury or property damage.
1.4 Protective Clothing
Flowserve products are often used in problematic applications (e.g. under extremely high pressures or
with dangerous, toxic or corrosive mediums). When performing service, inspection or repair operations,
always ensure that the valve and actuator are depressurized and that the valve has been cleaned and
is free from harmful substances. In such cases, pay particular attention to personal protection (e.g.
protective clothing, gloves, glasses and respirator as required).
1.5 Qualified Personnel
Qualified personnel are people who, on account of their training, experience, instruction and knowledge
of relevant standards, specifications, accident prevention regulations and operating conditions, have
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