VACUUM LEAK DETECTOR VLR ..
2020-06-29
6
4. Mounting instructions
4.1. General notes
(1) Heed manufacturers' approval for the tanks/pipes and the interstitial space.
(2) Installation and start-up must be carried out by a qualified company
5
.
(3) Heed relevant regulations concerning electrical installation
6
.
(4) Heed and observe accident prevention regulations.
(5) Pneumatic connections, connection lines and fittings must be able to withstand the pres-
sure (static pressure plus superimposed pressure) which could occur in the case of a leak,
for the whole temperature range possible.
(6) Before anyone enters a dome or control shaft, the oxygen content must be checked and
the shaft flushed out if necessary.
4.2. Mounting the leak detector
(1) Wall mounting, within a building
(2) Wall mounting in the open, using a suitable protective box.
If the detector is to be mounted in a protective box, at least one of the following points must
be observed:
-
Signal lamps for operation must be visible from the outside (protective box with trans-
parent lid or signal lamps mounted on the outside)
-
Use of potential-free contacts to extend alarm - if these contacts are not used, additional
external signal
(3) OUTSIDE potentially explosive areas.
(4) As near to the tank/pipe as possible (cf. section (6) of the following chapter).
4.3. Mounting the (pneumatic) connecting lines
(1) Plastic hoses (e.g. PVC) or tubes made of plastic or metal.
Pressure resistance, see requirements specified in chapter 4.1.
(2) Clearance
at least 4 mm for underground pipe laying and/or inside buildings
at least 6 mm for all other applications.
(3) Resistant to the product to be stored.
(4) Colour marking:
Measuring line
: RED;
Suction line
: WHITE or TRANSPARENT,
Exhaust
line
: GREEN.
(5) The full cross-section must be retained.
(6) The length of the lines between the interstitial space and the leak detector should not ex-
ceed 50 m. If the distance is bigger, a larger pipe cross-section must be used.
(7) Routing lines with lowest points: mounting of condensate traps at each lowest point (heed
pressure resistance specified in 4.1).
5
For Germany: Specialist firms according to the Federal Water Act, which have verified their qualification
for the installation of leak detection systems. For Europe: Authorisation from the manufacturer.
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For Germany: e.g. VDE regulations, regulations issued by utilities companies.
Summary of Contents for VLR 230
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