SGB VL-H9, Руководство пользователя

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SAFETY INSTRUCTIONS
VACUUM LEAK DETECTOR VL – H9
09.11.04 Your Partner for Leak Detection Technology
Sicherungsgerätebau GmbH, Siegen
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3. To section 6.3 “Installation of the Pneumatic Connecting Lines”
Section (5) has been rewritten, sections (10) and (11) have been deleted and section 6.3.1
“Installation of the Exhaust Line” has been added.
(5) Strong, metallic pipes must be used for the connecting lines (e.g. copper pipes). Plastic
pipes with sufficient pressure resistance (over the entire temperature range) may also be
used if the interstitial space is zone 1.
6.3.1 Installation of the Exhaust Line
(1)
The following lengths may not be exceeded for the exhaust line:
Pipe with 4 mm inside clearance:
max. 35 m
Pipe with 6 mm inside clearance: max. 50 m
If these lengths are not sufficient, the manufacturer must be consulted.
(2)
The exhaust line is generally routed to the tank vent, in which case an explosion protection
device must be installed on the tank vent side.
Exceptions:
Tanks with interior overlay pressure, tanks according to DIN 4119 with double-layered floor,
or comparable:
A)
The exhaust line can lead outside to a safe area, outside of the explosion area:
Provide a condensate trap and liquid stop valve in the exhaust. The area within 1 m
diameter of the end of the exhaust is considered as having zone 1 conditions; attach a
warning sign if necessary.
B)
The exhaust ends in zone 1 (e.g. remote fill chamber or collection space):
An explosion protection device
1
must be provided at the end of the exhaust line.
Condensate traps must be provided at low points; a liquid stop valve is not required if
the end of the exhaust is in an area which is made liquid-tight according to water
protection laws.
(3)
Caution: An exhaust line which ends outdoors must not in any circumstances be used to
detect leaks (e.g. by “sniffing”). Attach warning signs if necessary.
4. To section 6.5 “Installation of the Electrical Connecting Lines between the
working unit and the (Central) Monitoring Device”
6.5.1 “Grounding and Equipotential Bonding” has been added to this section.
(1) The housing of the leak detector must be connected to the equipotential bonding of the
overall system by means of the ground stud provided for that purpose.
(2) The fittings in the connecting lines must likewise be integrated into the equipotential
bonding, especially when plastic pipes (connecting lines to tanks) have been used.
(3) Before replacing a leak detector (working unit), disconnecting lines or similar work, it must
be ensured that the equipotential bonding remains intact (if necessary, pull electrically
conducting bridges).
1
The explosion protection device is not required if the exhaust is routed so that it is frostproof, and it can
be guaranteed that the exhaust will not become kinked or clogged.
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