Basic Remarks; Purpose Of The Document; Safety Symbols; Function - WERMA Signaltechnik 738 100 55 Mode D'emploi

310_783_001_0509.fm Seite 8 Dienstag, 19. Mai 2009 2:50 14
1

Basic remarks

GB
1.1

Purpose of the document

This operating manual is necessary for the safe and appropriate use of the
appliance, and as such must be read carefully by assembly and mainte-
nance staff before commissioning, and observed in all respects. This manual
must be kept ready to hand in an easily accessible place.
1.2

Safety symbols

This symbol indicates a possibly dangerous situation.
The disregard of indicated hazards can result in serious harm to health or lead
to material damage.
2

Function

The appliance was developed as a signalling device for warning in areas with
explosive hazard where flammable gases or dust are present. The device
group II category 2GD permits use in potentially explosive atmospheres of
zones 1/2 or 21/22. The explosion protection for gases is reached by protec-
tion types pressure resistant protection „d" and increased safety „e" in the
connection area, the explosion protection for dust is reached through the
housing with protection rating IP66.
3

Conformity

The appliance meets the following standards and directives:
• Directive 94/9/EC (ATEX), 2004/108/EC (EMC)
• EN 60079-0, EN 60079-1, EN 60079-7, EN 61241-0, EN 61241-1, EN 61000-6-2,
EN 61000-6-3
4

Safety instructions

• The appliance is exclusively intended for the designated use described in
article 2 "Function". Other applications are prohibited, as inappropriate
use can result in dangerous situations. The signalling device is suitable for
continuous operation.
• National safety and accident regulations must be observed.
• In case of equipment failure, additional safety precautions should be taken
to avoid possible danger to persons or damage to property.
• Wiring must be carried out by a qualified electrician. Adhere to relevant
regulations!
• The connection to external supply lines must be carried out using a
screwed cable gland (M20 x 1.5) in the terminal box under the cover (see
drawings from page 18). Install a fixed connection cable if an unprotected
or flexible cable is used.
• Turn off the power supply and take steps to ensure against further acciden-
tal use:
- Before connection.
OFF - In the event of damage
• Only operate the appliance when completely assembled and undam-
aged. Do not drill into or interfere with the explosion-proof housing in any
way.
8