H
H
L
L
-
-
S
S
e
e
r
r
i
i
e
e
s
s
E
E
l
l
e
e
c
c
t
t
r
r
i
i
c
c
A
A
c
c
t
t
u
u
a
a
t
t
o
o
r
r
I
I
n
n
s
s
t
t
a
a
l
l
l
l
a
a
t
t
i
i
o
o
n
n
a
a
n
n
d
d
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
M
M
a
a
n
n
u
u
a
a
l
l
H
H
K
K
C
C
40
9
Installation and Maintenance Tips
For any installation and maintenance work, the following should be observed :
Caution :
A regular inspection and maintenance performed by qualified and trained personnel
When working in potentially explosive areas, observe the standard EN 60079-14
“Electrical Installations
in Hazardous Areas
”.
Work at the open actuator under voltage must only be performed if it is assured that for the duration of
the work there is no danger of explosion.
Observe additional national regulations.
Check quarter turn actuators visually. Ensure that no outside damage or changes are visible. The electric connecting
cables must be without damage and wired correctly.
Cable entries, cable glands, plugs etc. have to be checked for correct tightness and sealing.
Check whether Ex-connections are fastened correctly.
Take care of possible discolouration of the terminals and wires.
Check the flame path gaps of flameproof enclosures for dirt and corrosion. Since the dimensions of all Ex gaps are
strictly defined and inspected, no mechanical work shall be performed on them.
Ensure that all housing covers are handled carefully and that the seals are checked.
All cable and motor protection elements have to be checked.
If defects which affect the safety are detected during maintenance, repair measures have to be taken immediately.
Any kind of surface coating for the gap surface is not permitted.
When exchanging parts, seals etc. only original spare parts shall be used.
Warning ;
Flameproof enclosure! Before opening, ensure the absence of gas and voltage.
Treat cover with care. Gap surfaces must not be damaged or dirtied in any way. Do not jam
cover during fitting.
10
Grounding
HL
– SERIES grounding
Danger ;
Flameproof enclosure! Before opening ensure that there is no explosive gas
and no voltage.