Maximum Temperatures - Emerson EL-O-Matic F-Series Safety Manual

EL-O-Matic F-Series
April 2018
4. In order to avoid increasing dust explosion risk, periodically clean dust deposits
from all equipment.
5. 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.
6. Rack and pinion actuators do not have an inherent ignition source due to electro-
static discharge, but explosion hazards may be present due to the discharge of
static electricity from other valve assembly components.
—
To avoid personal injury or property damage, make sure that the valve is
grounded to the pipeline before placing the valve assembly into service.
—
Use and maintain alternate shaft-to-valve body bonding, such as a shaft-to-
body bonding strap assembly.
7. 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.).
8. 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").

5.3 Maximum temperatures

WARNING - SURFACE TEMPERATURE
The actuator's surface temperature is dependent upon process operating conditions. Personal
injury or property damage, caused by fire or explosion, can result if the actuator's surface
temperature exceeds the acceptable temperature for the hazardous area classification. To avoid
an increase of instrumentation and/or accessory surface temperature due to process operating
conditions, ensure adequate ventilation, shielding, or insulation of these actuator components
installed in a potentially hazardous or explosive atmosphere.
Table 5.1 Temperature range for (potential) explosive areas
Temperature
Ambient range
-20°C(-4°F)...75°C(167°F)
-20°C(-4°F)...80°C(176°F)
-10°C(14°F)...90°C(194°F)
-10°C(14°F)...120°C(250°F)
-40°C(-40°F)...75°C(167°F)
-40°C(-40°F)...80°C(176°F)
The specified values are valid with the following conditions:
Maximum cycle frequency of the actuator is 1Hz at a maximum of 50 cycles per hour and at maximum load.
7
Temperature TX (surface
class temperature)
T6 T85°C (185°F)
T5 T90°C (194°F)
T5 T100°C (212°F)
T4 T130°C (266°F)
T6 T85°C (185°F)
T5 T90°C (194°F)
Safety Guide
DOC.SG.EF.EN Rev. 2
Valid for actuator model
S = Standard Temperature
H = High Temperature
L = Low Temperature
EN