Siemens SIMATIC AFD4 - Maintaining and Cleaning AFD4; AFD4 (FM); AFD8 and AFS

Installing and connecting
2.6 Maintaining and cleaning AFD4 / AFD4 (FM) / AFD8 and AFS
Active field distributors AFD4, AFD4 (FM), AFD8 and AFS
26 Product Information, 02/2015, A5E03775304-AC
2.6
Maintaining and cleaning AFD4 / AFD4 (FM) / AFD8 and AFS
Permitted activities in hazardous areas
The table below describes which maintenance activities are permitted on AFD4 / AFD4 (FM)
/ AFD8 / AFS during operation.
DANGER
Explosion hazard
Zone 2:
You may open the enclosure of the AFD4 / AFD4 (FM) / AFD8 / AFS
briefly
for the
permitted maintenance work.
Zone 22:
You must
not
open the enclosure of the AFD4 / AFD4 (FM) / AFD8 / AFS in areas with
dust.
Table 2- 3 Permitted activities in hazardous areas
Activities
Zone 2
Zone 22
Maintenance during opera-
tion (visual checks)
allowed
Warning:
The enclosure of the AFD4 / AFD4 (FM) / AFD8 /
AFS must
not
be opened for this activity in areas
with dust.
Cleaning
allowed
Not permitted
Maintenance during operation
Carry out maintenance every 6 months in the hazardous area.
Maintenance of the AFD4 / AFD4 (FM) / AFD8 / AFS is basically restricted to
visual
inspections
. The AFD4 / AFD4 (FM) / AFD8 / AFS may be in operation during this.
Zone 2
Zone 22
Check that the cable entries and the grounding
terminal of the enclosure are sealed and intact.
Check that the cable entries and the grounding
terminal of the enclosure are sealed and intact.
Warning:
It is not permitted to open the enclosure of the AFD4
/ AFD4 (FM) / AFD8 / AFS.
Check whether there is any water or dust in-
side the enclosure. If there is, find out how it
got there.
–
Check that the wiring is secure (connectors,
cables).
Read the safety instructions in the section
Safety instructions for connection (Page 14).
–