Dialight SafeSite LED Emergency Bulkhead - ATEX/IECEx - Manual (Page 5)

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The cable entries should be securely tightened to ensure
that the minimum protection rating is achieved. The cable
entry should be rated to minimum of IP66 to maintain the
protection level of the luminaire.
Do not over tighten as the protection rating may be
compromised.
Always refer to gland manufacturers data for torque
settings.
Special Conditions for Safe Use
Suitably certified cable entries must be used which include
a sealing washer to maintain the IP66/67 rating of the
enclosure.
The supply to the luminaire must include a fuse which is
capable of interrupting a 1500A short circuit current.
The glands must be suitable for use within an operating
temperature range of -40°C to +80°C.
The gland is required for increased safety (Ex-e) protection,
the entry thread shall be suitable sealed (in accordance
with IEC 60079-14) to maintain the ingress protection rating
of the fixture.
When used with steel basket weave armour or braided
(screened) cable the basket weave armour or braid is
unable to carry the cable load without fracture therefore the
cable must be clamped and cleated to prevent pulling on
the cable being transmitted to the cable terminations.
Battery
Two battery options are available.
3.6V 4Ah (part ref A80-000799) is provided with standard
temperature range 9 and 18 LED units. It is secured in
place with releasable cable ties, and need not be removed
during installation.
3.6V 10Ah (part ref A80-001500) is provided with 27 LED
units, optionally for -20C operation on 9 and 18 LED units.
The 10Ah battery is mounted on a bracket which must be
removed during installation. DISCONNECT the 2-pole
battery connector and remove two M4 Torx screws (T20
head) adjacent to the battery. The screws are retained to
the bracket. Un-hook the bracket and remove to gain
access to the terminal block below.
Electrical Connection
See Figure 2. Electrical Connection
When connecting the conductors extra care should be
taken in order to maintain the hazardous protection.
The insulation of the conductors shall reach up to the
terminal block. The conductor itself shall not be damaged.
The connectible minimum and maximum conductor cross
sections shall be observed (see electrical connection data).
A maintained mode emergency luminaire requires 2 live
feeds.
The L1 connection is a permanent live feed. It powers the
main normal mode operation, battery charger and is used
to activate emergency mode. It may be supplied via an
emergency lighting “Test” switch.
The L2 connection is a switched live feed to control
luminaire normal mode on or off. It is a signal input that
consumes negligible current.
Battery and Magnetic interlock
The driver electronics (inside the flameproof Ex-d tube)
incorporate a magnetic sensor device to shut down all
battery related circuits when the fixture front is removed.
A small disc magnet is mounted onto the inside of the LED
tray assembly, which when properly in place activates
battery related functions (charging, monitoring and
emergency operation).
Upon completion of electrical wiring and testing, refit the
battery and bracket (10Ah version), then re-connect the
battery by mating together to the 2 pole plug and socket.
Closing the LED Luminaire
Remove any foreign bodies from the fixture
Pay attention when fitting the LED tray to the enclosure,
make sure the seals are clean and undamaged.
Do not allow any cables to become trapped between the
LED tray and the enclosure, battery or driver tube.
Tighten all 4 TORX screws evenly (see table)
Taking into operation
Prior to operating, check the luminaire for its correct
installation in compliance with these operating instructions
and other applicable regulations.
Attention: Only fully certified equipment may be put
into operation.
Improper installation and operation of this luminaire may
invalidate the warranty.
Upon applying power, confirm the operation of battery
circuits by observing the green status LED located in the
corner of the LED tray. The green status LED will light only
if
- The LED tray is properly fitted, activating the magnetic
sensor
- The battery is connected
- The battery is charging and within acceptable voltage
limits