Burkert Type 8643 - Manual (Page 7)

8643 - 7
english
3 safeTy precauTIons
DANGER!
hazard due to electrical voltage in the system!
Working on the unit involves acute risk of injury.
Before starting work, be sure to switch off the supply voltage and se- •
cure it to prevent restarting!
Observe all applicable accident prevention and safety regulations for
•
electrical equipment!
danger from using the power I/o Box Type 8643 in unauthorized
ambient temperature ranges!
Hazardous situations may arise due to use in unauthorized ambient tem-
perature ranges, especially in potentially explosive environments.
Remain within the appropriate ambient temperature range, for each •
type (e. g. 8643-2-AL-KS-F-I/O), according to the table in the EC-Type
Examination Certificate (see Annex / Type Examination Certificate).
hazard due to unauthorized combination of types of ignition protec-
tion!
Hazardous situations may arise due to unauthorized combination of differ-
ent types of ignition protection!
Once the bus supply of the 4-wire version has been used in an in- •
creased ignition protection class (e), the bus supply may no longer be
done at the intrinsical standard ignition protection class (i).
WARNING!
unintentional operations or unauthorized tampering can lead to gen-
erally dangerous situations including personal injury.
Take suitable measures to prevent unintentional operation or unauthor- •
ized tampering!
dangerous situations may occur during installation and maintenance
work.
This work may only be carried out by authorized service personnel using •
appropriate tools!
After an interruption of the electricity or compressed air supply, ensure
•
that the process is re-started in a dened or controlled manner!