10
3L.P. GAS s.r.l.
TECHNICAL MANUAL ICM
ATTENTION
At the end of the operation,
reconnect the control head
to the downstream pressure take-off.
N.B.: The intervention tests should be repeated at
least every 6 months.
At the end of the slam-shut check, proceed as
follows:
1) check that the slam-shuts is in the closed position;
2) open the inlet on/off valve V1;
3) very slowly open the slam-shut by turning the
provided lever.
5.0
TROUBLE-SHOOTING
The problems of various kinds which could arise over
time are highlighted below.
They derive from phenomena associated with the
conditions of the gas as well, of course, as the natural
ageing and wear of the materials.
It must be remembered that all operations on the
apparatuses must be carried out by highly qualified
personnel with appropriate knowledge of the subject.
Tampering with the apparatuses by unsuitable
personnel relieves us from all responsability of any
kind.
You must therefore train your maintenance personnel
or avail of the service centres officially authorised by
us.
5.1
TAB. 2 ICN SLAM-SHUT (Fig. 11-12)
N.B.
If the slam-shut has intervened, close the inlet
and outlet valve (
V1
and
V2
) on the line and discharge
the pressure before carrying out any operation.
Eliminate the causes which gave rise to
intervention before reactivating it.
In the event of operating problems when personnel
qualified for a specific operation are not available, call
the nearest service centre.
M
E
L
B
O
R
P
S
E
S
U
A
C
E
L
B
I
S
S
O
P
Y
D
E
M
E
R
r
o
t
a
r
u
t
b
o
t
u
h
s
-
m
a
l
S
e
s
o
l
c
t
o
n
s
e
o
d
d
e
r
u
t
p
u
r
)
6
1
(
m
g
a
r
h
p
a
i
d
l
o
r
t
n
o
C
m
g
a
r
h
p
a
i
d
e
h
t
e
g
n
a
h
C
m
o
r
f
e
g
a
k
a
e
L
r
o
t
a
r
u
t
b
o
t
u
h
s
-
m
a
l
s
d
e
t
a
r
o
ir
e
t
e
d
)
0
1
(
t
e
k
s
a
g
r
o
t
a
r
u
t
b
O
t
e
k
s
a
g
e
h
t
e
g
n
a
h
C
n
r
o
w
)
6
6
(
g
n
ir
-
O
e
g
n
a
h
C
d
e
p
p
i
h
c
r
o
d
e
d
o
r
e
)
7
(
t
a
e
s
r
o
t
a
r
u
t
b
O
t
a
e
s
e
h
t
e
g
n
a
h
C
e
r
u
s
s
e
r
p
e
s
a
e
l
e
r
g
n
o
r
W
r
o
/
d
n
a
m
u
m
i
x
a
m
f
o
g
n
it
t
e
s
g
n
o
r
W
g
n
ir
p
s
m
u
m
i
n
i
m
s
g
n
ir
e
h
t
g
n
i
s
u
n
i
a
g
a
g
n
it
t
e
s
e
h
t
e
k
a
M
)
3
1
(
r
o
/
d
n
a
)
2
1
(
m
e
t
s
y
s
r
e
v
e
l
e
h
t
n
i
n
o
it
c
ir
F
e
l
o
h
w
e
h
t
g
n
i
n
i
a
t
n
o
c
x
o
b
e
h
t
e
g
n
a
h
C
y
l
b
m
e
s
s
a
e
l
b
i
s
s
o
p
t
o
n
g
n
i
t
t
e
s
e
R
o
t
d
e
l
h
c
i
h
w
e
s
u
a
c
e
h
t
f
o
e
c
n
e
t
s
i
s
r
e
P
r
o
e
s
a
e
r
c
n
i
e
r
u
s
s
e
r
p
m
a
e
r
t
s
n
w
o
d
e
s
a
e
r
c
e
d
m
a
e
r
t
s
n
w
o
d
e
h
t
e
s
a
e
r
c
n
i
r
o
e
s
a
e
r
c
e
D
e
r
u
s
s
e
r
p
d
e
p
p
i
h
c
r
o
n
e
k
o
r
b
m
e
t
s
y
s
r
e
v
e
L
g
n
i
n
i
a
t
n
o
c
x
o
b
d
r
a
d
n
a
t
s
e
h
t
e
g
n
a
h
C
r
o
t
a
l
u
g
e
r
e
h
t
e
d
i
s
t
u
o
y
l
b
m
e
s
s
a
e
h
t
