Curtiss-Wright | EL30 Rev. H PN23942 6/14/16
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1.2 Safety Considerations
As with any electro-mechanical device, safety should be considered
during the installation and operation of your EL Series actuator.
Throughout this manual you will see paragraphs marked with CAUTION
and WARNING signs as shown below.
CAUTION WARNING
Pay particular attention to these paragraphs. They are intended to
provide you with helpful information to ensure safe and trouble-free
installation.
1.3 Explosion-Proof Ratings
EL Series actuators are rated for Class 1, div 1, Groups B, C and D.
The classification of "Class 1" means that flammable gases or vapors
may be present in the air in quantities sufficient to produce explosive or
ignitable mixtures. "Division 1" means that hazardous concentrations in
the air may exist continuously, intermittently, or periodically under normal
operating conditions. "Group B" allows for atmospheres containing
hydrogen, or gases (or vapors) of equivalent hazard, such as
manufactured gas. "Group C" allows for atmospheres containing ethyl-
ether vapors, ethylene or cyclo propane. "Group D" allows for
atmospheres containing gasoline, hexane, naptha, benzene, butane,
alcohol, acetone, benzol, lacquer solvent vapors, or natural gas.
EL Series actuators are not rated for operation in atmospheres
containing acetylene.
It is the responsibility of the user to provide for properly rated
conduit connections to the EL Series actuator. Exlar takes no
system responsibility beyond the actuator ratings.
