•
A buildup of gases within the pump, sealing system and or process piping system may
result in an explosive environment within the pump or process piping system. Ensure
process piping system, pump and sealing system are properly vented prior to operation.
•
Sealing systems that are not self purging or self venting, such as plan 23, require manual
venting prior to operation. Failure to do so will result in excess heat generation and seal
failure.
•
Do not apply additional paint or coatings to the pump when in an ATEX environment.
Static electric discharge can be initiated when contacting or rubbing surfaces with exces-
sive coating thickness.
•
Potential electrostatic charging hazard. Do not rub, clean, or blast equipment with dry
cloth or dry media.
•
Stray electrical currents may ignite explosive atmospheres. Ensure drives are certified for
variable frequency drive operation by the manufacturer.
•
User shall observe necessity of using a safety device, such as a flame arrestor, to prevent
flame entering or leaving the pump sump, tank, or barrel when applicable.
•
For variable speed motor applications, the electric motor must be specified with shaft
grounding and used with a conductive type coupling suitable for the area classification.
•
In plants or pumps with cathodic corrosion protection, a small current constantly flows
through the construction. This is not permissible on the complete pump or partially-as-
sembled machinery without further precautions being taken. ITT should be consulted in
this context.
•
Move equipment to a safe/non ATEX environment for repairs/adjustments or use spark
resistant tools and work methods.
1.4 ATEX Considerations and Intended Use
Model 3700i API610 / Type OH2 Installation, Operation, and Maintenance Manual
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