Advertisement
October 2020
6
Maintenance
6.1
Opening the lid (cover)
Before opening the lid for maintenance reasons, consider the following:
•
Check the certifications on the product label and then review
•
Review the section Safety.
•
Ensure that no dust deposits or airborne dusts are present.
•
Ensure that rain does not enter the housing.
Table 6-1: Check Before Opening Lid
Protection
No protection
Flameproof or gas
explosion-proof (type D
housing)
Dust explosion-proof
Intrinsic safety
6.2
Regular checks for safety
To ensure robust safety in hazardous locations and with electrical safety, the
following items must be regularly checked depending on the application:
•
Mechanical damage or corrosion of the field wiring cables or any other
components (housing side and sensor side).
•
Tight sealing of the process connection, cable glands, and enclosure lid.
•
Properly connected external PE cable (if present).
6.3
Cleaning
If cleaning is required by the application, following must be observed:
•
Cleaning agent must comply with the materials of the unit (chemical
resistance). Mainly the shaft sealing, lid sealing, cable gland and the
surface of the unit must be considered.
The cleaning process must be done in a way, that:
•
The cleaning agent cannot enter into the unit through the shaft sealing,
lid sealing or cable gland.
Quick Start Guide
Safety information
Do not remove the lid while circuits are alive.
To prevent ignition of hazardous atmospheres, do not
remove the lid while circuits are alive.
To prevent dust explosions, do not remove the lid while
circuits are alive.
If NAMUR electronics is fitted, the lid can be removed
while circuits are alive.
Quick Start Guide
Table
6-1.
33
Advertisement
