Installation Guide

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1. Safety Instructions
• Read the safety instructions before installation.
• Make sure you understand the safety instructions before installation.
Electrical installations in hazardous areas possess features specially designed to
render them suitable for operations in such atmospheres. It is essential for reasons
of safety in those areas that, throughout the life of such installations, the integrity of
those special features is preserved; they therefore require initial inspection and
either a) regular periodic inspections thereafter, or b) continuous supervision by
skilled personnel in accordance with this standard and, when necessary,
maintenance.
Training
The inspection and maintenance of installations shall be carried out only by experienced personnel,
whose training has included instruction on the various types of protection and installation practices, the
relevant rules and regulations and on the general principles of area classification. Appropriate
continuing education or training shall be undertaken by personnel on a regular basis.
Skilled personnel must be provided with sufficient training to enable familiarity with the installation
which they attend. This training shall include any plant, apparatus, operational or environmental
conditions which relate to their understanding of the needs of the explosion protection of apparatus.
Where any alterations or changes to the process or installation are affected this information shall be
provided to the skilled personnel in a manner which supports their function as part of the continuous
supervision process.
Inspection
Before the apparatus is brought into service, it shall be given an initial inspection. To ensure that the
installations are maintained in a satisfactory condition for continued use within a hazardous area,
either a) regular periodic inspections, or b) continuous supervision by skilled personnel, and, where
necessary, maintenance shall be carried out. If the apparatus is dismantled during an inspection,
precautions shall be taken during reassembly to ensure that the integrity of the type of protection is not
impaired.
Typical inspection schedule:
• Apparatus is appropriate to area classification as defined by the label
 Apparatus temperature class is correct
 Apparatus category and gas/dust class is correct
• IP grade of apparatus is appropriate to conductivity of dust
• Apparatus circuit identification is available
• Enclosure, glasses and glass to metal sealing gaskets and/or compounds are satisfactory
• There are no visible unauthorized modifications
• Bolts, cable entry devices and blanking elements are of the correct type and are complete and
tight
• Apparatus is adequately protected against corrosion, weather, vibration and other adverse
conditions
• No undue accumulation of dust and dirt
• Apparatus installed is that specified in the documentation