20/05/2020
VACUUM LEAK DETECTOR
VLR ..
and
VLR .. MV
- 19 -
5.3 Pneumatic Connection Lines
5.3.1 Requirements
o
At least 6 mm inside clearance
o
Resistant to the stored or conveyed product
o
Pressure and vacuum-resistant across the entire temperature
range
o
The full cross section must be maintained (not bent)
o
Color coding:
Measuring line
: RED;
Suction line
:
WHITE or CLEAR;
Exhaust
:
GREEN.
o
The lines between the interstitial space and leak detector must not
exceed 50 m in length. If the distance is greater than this, a larger
cross section must be used.
o
Condensate traps must be installed at all low points of the connec-
tion lines.
o
Assemble liquid stop valve in the suction line (generally included in
the assembly kit).
5.3.2 Exhaust
o
The exhaust line can lead outside to a safe
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area:
Fit a condensate trap and a liquid stop valve in the exhaust line.
o
Caution: An exhaust line which ends outdoors must not in any cir-
cumstances be used to detect leaks (e.g., by “sniffing”). Attach
warning signs if necessary.
5.3.3 Several pipeline interstitial spaces are connected in parallel
o
Lay connection lines at a downward angle to the interstitial space
or the manifold. If there are low points in the connection lines and
lines are laid outdoors as well, install condensate traps at all low
points.
o
Lay suction and measuring lines at a downward angle to the mani-
fold. If this is not possible, place condensate traps at all low points.
o
Connect a liquid stop valve to each connection line to the intersti-
tial space, against the valve direction.
This prevents leaking liquids from entering the interstitial spaces of
the other pipelines.
o
If shut-off cocks are installed in the connection lines, then they
should be sealable in the open position.
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Among other things, not accessible to public transport/persons
Mounting