4
Installation & Maintenance
Instructions
2.1 Introduction
This manual has been produced to enable a competent user
to install, operate, adjust and inspect the Rotork range of
compact control valve actuators.
The electrical installation, maintenance and use of these
actuators should be carried out in accordance with the
National Legislation and Statutory Provisions relating to
the safe use of this equipment applicable to the site of
installation.
For the UK:
Electricity at Work Regulations 1989 and the
guidance given in the applicable edition of the ‘IET Wiring
Regulations’ should be applied. Also the user should be fully
aware of their duties under the Health and Safety at Work
Act 1974.
For the USA:
NFPA70, National Electrical Code
®
is applicable.
The mechanical installation should be carried out as outlined
in this manual and also in accordance with any relevant
national standard codes of practice. If the actuator nameplate
indicates that it is suitable for use in a Potentially Explosive
Atmospheres (Hazardous Areas) then the actuator is suitable
for use in Zone 1 and Zone 2 (or Div 1 and Div 2) hazardous
area classifications, as defined by the actuator’s nameplate
marking.
Any equipment connected to the actuator should be of
an equivalent (or better) hazardous area certification. The
installation, maintenance and use of the actuator installed in
a hazardous area must be carried out by a competent person
and in accordance with all relevant codes of practice for the
particular Hazardous Area certification.
Any inspection or repair of Hazardous Area approved
actuators should not be undertaken unless it conforms to
National Legislation and Statutory Provisions relating to the
specific Hazardous Area.
Only Rotork approved actuator replacement parts should
be used. Under no circumstances should any modification
or alteration be carried out on the actuator, as this could
invalidate the conditions under which its certification was
granted.
Access to live electrical conductors is forbidden in a
Hazardous Area unless it is done under a special permit
to work, otherwise all power should be isolated and the
actuator moved to a non-hazardous area for repair or
attention.
Only persons competent by virtue of their training or
experience should be allowed to install, maintain and repair
Rotork actuators. Work undertaken must be carried out in
accordance with instructions in the manual. The user and
those persons working on this equipment should be familiar
with their responsibilities under any statutory provisions
relating to the Health and Safety of their workplace.
2.2 Enclosure Materials
The enclosures on the Rotork range of control valve actuators
are manufactured from aluminium alloy with stainless steel
fasteners.
The user must ensure that the operating environment and any
materials surrounding the actuator cannot lead to a reduction
in the safe use of, or the protection afforded by, the actuator.
Where appropriate the user must ensure the actuator is
suitably protected against its operating environment.
Should further information and guidance relating to the safe
use of the Rotork control valve actuator range be required, it
will be provided on request.
2.0 General Information
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