Chapter: Troubleshooting
Topic:
leak Checking yourGC
If
the
cresscre does
not
drop at
I -
I
COO)
I'
..
~
ai,
or dl'tlps
vert
1IowIy, then
the
entire system
is
leak-light
In
some ways, this
is
the bestway
to
"'"""
check for
leaks, because one test
verffies
that every connection in
•
~
--
::
the system is holding pressure.
Dir.aion
<If
g-. _
WJIh a complex gas I ystem,
Of
one where some of the fittings are
in-accessible or hot
it
may
be
diffi-
Plug
the pneumatic
lYIlem
df •
the end
d
the
cult
to
use the leak meek liquid or
~fIow~,
You'-10
know
""'*'-
IhoI
gas
meter. Also,
the
prMsure drop
exits
10
the
"" If;l&jA• •
test can delect leaks that are
too
small for
the other
methods
to
see.
I -
I
(~)~~ ,
I
tf
the
pressure does drop quicldy,
there is
a leak in !hlIIYStem. To
•
locale
the
source
of
the
leak,
move
the
plug
from
the end
of
Ihe
· .cC
poelJmatie system
to
!he
neJll
fit-
- -_ .>
•
ting upstreamand repeat the
lest
tf
Ihe
system
now
holds pressure.
OIr-.alp_
then
the
leakmust
be
somewnere
between !he
Ioea~on
0'
the
previ-
~
the
plug
ID1hII .--l lllbng
"'*'~
In
the
OUI plug and the current plug.
~~.-.d~Ihe~drcp
-
I-) GXD
I- I
8y moving
the
plug location step
by step upstream, eventually
it
wi.
..
"'"""
• • • .>
be
obviOus where the leakmust
•
be.
DinQon
of
g-.""
~"-'_pluglDh.--l""''''''_''
rd..-___ ....,.,...
~_hdll
~W'llU '-.~_
...
~.
