Emerson Hytork XL Series Safety Manual page 16

Section 5: Safety Instructions in Explosive Atmosphere
March 2024
12
iii. The equipment must be earthed through an
anti-loosening and anti-rotation device. The user
must regularly check the effectiveness of the
ground connection.
iv. A warning is present into the label: �Potential
Electrostatic Charging Hazard".
9. When equipment is installed in a hazardous area location
(potentially explosive atmosphere), prevent sparks by proper
tool selection and avoiding other types of impact energy.
10. It is under end user responsibility to avoid the explosive
mixture inside the actuator. We suggest utilizing a solenoid
with a �breather" function on spring-return actuators when
used in potentially explosive atmospheres.
11. To avoid increasing dust explosion risk, periodically clean
dust deposits from all equipment.
12. Proper care must be taken to avoid generation of static
electricity on the non-conductive external surfaces of the
equipment (e.g., rubbing of surfaces, etc.).
13. The paint protection must not exceed 200 μm if the actuator
is used in a group IIC atmosphere. For group IIA or IIB
atmospheres, the paint protection must not exceed a
thickness of 2 mm / 0.08 in.
14. For single acting actuators, it is necessary using safe air and
to convey by a piping inlet/exhaust of the cylinder outside of
the Ex-zone (Safe Area).
15. After maintenance operations, perform a few actuator
operations to check that its movement is regular and that
there is no air/oil leakage through the seals/gaskets.
16. It is under end user responsibility to make sure the electrical
equipment installed on the actuators have a separated
ATEX evaluation and they are designed according to the
ATEX Directive and they are suitable for the installation
zone, group of gas, temperature class, maximum surface
temperature, EPL and range of temperature.
Safety Instructions in Explosive Atmosphere
Safety Guide
DOC.SG.HX.1 Rev. 2