_________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. D190-00-251-IS-SC Issue: 4 37-08-15 Sheet 2 of 3
The installation of the units must also be in accordance with the
NEC / CEC and any local regulations and should only be carried
out by a competent electrical engineer who has the necessary
training.
The Equipment must not be installed with the horn facing
upwards of horizontal.
To maintain the ingress protection rating and mode of protection,
the cable entries must be fitted with suitably rated cable entry
and/or blanking devices during installation. If conduit is used for
installation, seal conduit within 18 inches from the enclosure.
If entries are fitted with adaptors they must be suitably rated for
the application. Fitting of blanking elements into adaptors is not
permitted.
If a high IP (Ingress Protection) rating is required then a suitable
sealing washer or O-ring must be fitted under any cable gland
or blanking device with metric threads.
Only the explosionproof cover is to be used for access to the
enclosure for installation, service and maintenance.
Connections are to be made into the terminal blocks using solid
or stranded wire, sizes 0.5-2.5mm
2
/ AWG 20-14. Wire insulation
needs to be stripped 6-7mm. Wires may be fitted securely with
crimped ferrules. Terminal screws need to be tightened down
with a tightening torque of 0.4 Nm / 3.5 Lb-in.
Earthing connections should be made to the Internal Earth
terminal in the explosionproof chamber or the external earth
stud.
Check that the ‘O’ ring seal is in place before replacing the
explosionproof cover.
4.2 Mounting
Fig. 1 Fixing locations.
D1x Loudspeakers should only be installed by trained
competent personnel.
The D1x Loudspeakers may be secured to any flat surface using
the three 7mm fixing holes. The enclosure provides IP66
protection and is suitable for indoor and outdoor use providing it
is positioned so that water cannot collect in the horn, and the
cable entry is sealed.
4.3 Installation procedure
a. Secure the D1x Loudspeaker to a flat surface via the
three 7mm fixing holes in the mounting bracket.
b. Remove the explosionproof cover of the loudspeaker by
unscrewing it, taking care not to damage the threads in
the process (Refer to section 5).
c. Fit an M20x1.5 suitably certified cable gland or ½” NPT
conduit into the corresponding entry in the enclosure and
connect the field wiring to the appropriate loudspeaker
terminals as shown in section 6 / Fig 3 (70V Line In) or
section 7 / Fig 4 (Low Impedance) of this manual. The
power supply terminals on the low impedance units are
duplicated so that units may be connected in parallel. An
end of line monitoring resistor may be fitted to either type
of unit. Additional entries which are not used must always
be fitted with suitably certified blanking elements
d. Replace the explosionproof cover of the loudspeaker,
taking care not to damage the explosionproof threads
and checking that the O-ring seal is in place. Tighten the
cover fully.
4.4 Hornless Variants
The D1x Loudspeaker is also available as a variant with
no horn fitted in the factory. The Horn threaded nose
portion has a fitment thread of 1-3/8” – 18 UNF (to
BS1580 or ANSI B1.1). The customer is responsible for
sourcing and correctly fitting a suitable horn that meets
all of the relevant safety requirements.
5) Access to the Explosionproof Enclosure
In order to connect the electrical supply cables to the
loudspeaker it is necessary to remove the explosionproof cover
to gain access to the explosionproof chamber. This can be
achieved by unscrewing the explosionproof cover, taking
extreme care not to damage the explosionproof threads in the
process
Fig. 2 Accessing the Explosionproof Enclosure.
On completion of the cable wiring installation the explosionproof
threads should be inspected to ensure that they are clean and
that they have not been damaged during installation. Also check
that the ‘O’ ring seal is in place, on the thread diameter in contact
with the flat face of the explosionproof cover. When replacing
the explosionproof cover ensure that it is tightened fully.
6) 70V Line In Wiring
Fig. 3 Line in Terminals
External Earth
Assembly
Flameproof
cover
Blanking element
E
D
C
B
A
Internal Earth
Terminal
(Appropriate
cable glands to
be customer
supplied)
