This manual is produced to enable a
competent user to install, operate,
adjust and inspect Rotork IQT range
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
“IEE Wiring Regulations’’ should be
applied. Also the user should be fully
aware of his duties under the Health
and Safety Act 1974.
For the USA
: NFPA70, National Electrical
Code ® is applicable.
The mechanical installation should be
carried out as outlined in the manual
and also in accordance with relevant
standards such as British Standard
Codes of Practice. If the actuator has
nameplates indicating that it is suitable
for installation in Hazardous Gas Areas
then the actuator is suitable for use in
Zone 1 and Zone 2 (or Div 1 and Div 2)
explosive atmospheres only. It should
not be installed in atmospheres where
gases are present with an ignition
temperature less than 135°C, unless
suitability for lower ignition
temperatures has been indicated on the
actuator nameplate.
Any test instruments applied to the
actuator should be of equivalent
certification. The electrical installation,
maintenance and the use of the
actuator should be carried out in
accordance with the code of practice
relevant for that particular Hazardous
Gas Area certification.
No inspection or repair should be
undertaken unless it conforms to the
specific Hazardous Gas Area
certification requirements. 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 the hazardous area unless
this 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.
Thermostat Bypass
If the actuator is configured to bypass
the thermostat, when using the ESD
function, the hazardous area
certification will be invalidated.
Control and Indication
Where the actuator build allows remote
control and indication supplies higher
than 150V a.c. but below 300V a.c.
(refer to actuator wiring diagram) the
remote control and indication supplies
must be derived from a supply which is
designated as installation category
(overvoltage category) ll as defined in
BSEN 61010 (Safety Requirements For
Electrical Equipment for measurement,
control and laboratory use).
Enclosure Materials
IQT 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 it’s operating
environment.
Should further information and
guidance relating to the safe use of the
Rotork IQT range of actuators be
required, it will be provided on request.
WARNING: Operating by Hand
With respect to handwheel operation
of Rotork electric actuators, see
warning on p3.
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Health and Safety
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