safety requirements. It is recommended (and may be required in some jurisdictions)
that the final installation be verified and inspected by the authority having jurisdiction
before placing the equipment back into service. Electrical installations in hazardous
areas have features specifically designed to make them suitable for use in such
locations and it is the operator’s responsibility to maintain the integrity of those special
features.
Warning:
The electronics inside the explosion-proof enclosure are not suitable for
exposure in a hazardous area while power is applied. Proper precautions must be
taken before opening the enclosure when the meter and its electronics are
installed in a hazardous area. The area must be verified that hazardous gases or
vapors are not present, and all power to the equipment has been removed.
1.5.2 Electrostatic Discharge Precautions
The UMCB printed circuit board assembly is susceptible to damage by static
discharge. To minimize the risk of damage, the following precautions should be
followed:
l
Before touching a circuit board with hands or tools, personnel and tools should be
grounded using a wrist strap.
l
Avoid touching components or traces on the circuit boards and handle by the
edges or mounting holes.
l
Circuit boards should be kept in static control packaging, such as static shielding
bags, when not installed.
l
Provisions should be made to protect against electrostatic discharge (ESD) in work
spaces when handling circuit boards.
Bulletin MN0A005 Issue/Rev. 0.0 (4/22)
4
SoM Replacement Manual
