
Pub. 42004-503A
__________________________________________________________________________________________________________________
Tel: 800-492-1212
GAI-Tronics 3030 Kutztown Rd. Reading PA 19605 USA
www.gai-tronics.com Fax: 610-796-5954
Sheet 4 of 5
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 0.5–4.0mm2/ AWG 20–12. 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
Figure1. Fixing locations.
13310-4xx Loudspeakers should only be installed by trained
competent personnel.
The 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 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 / Figure 3 (70V Line In) or
Section 7 / Figure 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 13310-4xx 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 Explosion-proof Enclosure
In order to connect the electrical supply cables to the
loudspeaker, it is necessary to remove the explosion-proof
cover to gain access to the explosion-proof chamber. This
can be achieved by unscrewing the explosion-proof cover,
taking extreme care not to damage the explosion-proof
threads in the process.
Figure2.AccessingtheExplosion‐proofEnclosure
On completion of the cable wiring installation, the explosion-proof
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 explosion-proof cover. When replacing
the explosion-proof cover ensure that it is tightened fully.
6)
70V Line In Wiring
Figure3.LineInTerminals
Internal Earth
Terminal
E
D
C
B
A
Blankin
elemen
External Earth
ssembl
(Appropriate
cable glands to
be customer
supplied) Flameproof
cover