25/11/2019
LEAK INDICATING UNIT
LAE 3-8
- 11 -
5. Mounting the System
5.1 Basic Instructions
- Prior to commencing work, the documentation must be read and
understood. In case of ambiguities, refer to the manufacturer.
- The safety instructions in this documentation must be adhered to.
- Only qualified service companies may be used for mounting and
commissioning
1
.
- Leadthroughs for connection lines through which the explosion
atmosphere can carry over must be sealed gas-tight.
- Comply with relevant regulations regarding electric installation, ex-
plosion protection (e.g. EN 60 079-14, -17), and accident preven-
tion.
5.2 Mounting the Indicating Unit
- Wall mounting usually with dowels and screws in a dry room
-
NOT in potentially explosive areas.
- For housing dimensions and hole pattern, see Chap. 7.
5.3 Electrical Cables
Mains connection LAE and power supply for VLX .. A-Ex tool (5-wire):
- 1.5 mm
2
without ferrule or with ferrule without plastic collar
Potential-free relay contacts (6-wire):
- 1.5 mm
2
without ferrule or with ferrule without plastic collar
- 0.75 mm
2
with ferrule and plastic collar or with ferrule without plastic
collar
External signal (2-wire):
- 1.5 mm
2
without ferrule or with ferrule without plastic collar
- 0.75 mm
2
with ferrule and plastic collar or with ferrule without plastic
collar
Must be resistant to stored/pumped liquids
5.4 Electrical Wiring Diagram
(1) Install the electrical connection securely, without plug or switch-
ing connections.
(2) Observe the requirements for electric installations, if necessary,
also those of the electric companies.
(3) Terminal layout: (see also block diagrams in Chap. 5.4.3 and
5.4.4)
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For Germany: Specialist service companies per Water Law that have documented qualifications to install
leak detection systems.
Mounting
