Elkhart Brass 70133000 Electric Valves - Manual (Page 18)

18
CABLE / CONDUIT ENTRIES
The sealing of cabling and conduit entries should be done in accordance with National Standards or the
Regulatory Authorities that have certified the actuators. This is particularly true for actuators that are certified
for use in hazardous areas where the method of sealing must be to an approved standard, and cable glands,
reducers, plugs and adapters must be approved and separately certified.
Important: To prevent water ingress through the conduit, ensure the conduit fittings have the
minimum protection degree required by the application.
If rigid conduit is utilized, a flexible pipe connection between the conduit and terminal board should be
utilized. To ensure proper weatherproof protection, screw the cable fittings tightly. Thread sealant must be
used.
SAFETY INSTRUCTIONS FOR INSTALLATION IN HAZARDOUS AREA
Instructions for explosion proof enclosures
Important: The actuators must be installed and maintained per all applicable rules covering
electrical installation in hazardous areas (other than mines) classified as zone 1 and/or 2 (gas) and
zone 21 and/or 22 (dust).
During the disassembly and reassembly of the explosion proof enclosures (covers, cable glands, and joints)
ensure that all enclosures are returned to their original condition to ensure their weatherproof or explosion
proof integrity. Apply a film of recommended grease to all flange surfaces.
Proceed as follows:
Important: Do not damage the explosion proof mating surfaces of the housing of the electrical
enclosure covers.
Reinstall all retaining bolting, using a thread sealant and applying a film of copper or molybdenum-based
grease. Replace any weatherproof seals that may have been removed (O-Ring for the covers).
Important: Anytime covers are removed, check the condition of all sealing components. If
damaged, replace with factory recommend replacement parts prior to reassembly.
Installation in Environments with Explosive Dust
Important: The actuators must be installed and maintained per all applicable rules covering
electrical installation in hazardous areas (other than mines) classified as zone 1 and/or 2 (gas) and
zone 21 and/or 22 (dust).