Pag 3
.
Working conditions
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Insertion time
100%
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Working Position
Lighting fixture:
Max. Tilting
±
90° from horizontal
Lamp:
S90
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Ambient Temperature,
t
a
-20° C
÷
+45° C
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Humidity
Not condensing
Top Back Sides
Front
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Minimum distances from
inflammable surfaces
0,75 m.
0,2 m.
0,2 m.
3,5 m.
The luminaire should never be OPERATED close to inflammable materials. The ones indicated in the above
table are the minimum distances recommended. Other requirements for safe use are:
A. Do not cover the apertures of the luminaire housing. They are essential for correct ventilation. Do not use
on the floor. It reduces the ventilation.
B. Use only original accessories and spares from De Sisti Lighting.
C. Before hanging the luminaire ensure that the suspension point (or the stand) is properly rated to accept
the luminaire weight.
D. In case of pole operated use, fit only a P.O. stirrup from De Sisti Lighting.
E. A suitable secondary safety suspension device (safety cable, chain or equivalent) must be fitted between
the suspension point and stirrup.
F. Don` t use the luminaire in an environment where the ambient temperature is higher than the maximum
nominal one, t
a
, indicating the rating.
4. INSTALLATION INSTRUCTIONS
Before connecting the luminaire to the electrical mains ensure that:
A - Earth line is present on the power socket.
B - The mains voltage is within the rated range of the luminaire (see technical data on the rating label)
C - The lamp fitted:
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is among the recommended lamps (see De Sisti Lighting catalogue or contact your De Sisti
dealer)
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has the same nominal voltage as the mains supply
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has a nominal power not higher than maximum power of the luminaire
NB: the luminaire nominal frequency rate is 0 - 60 Hz.
D - The front safety shields against the lamp explosion are present and in good condition.
Depending on luminaire type these items may consist of:
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wire mesh guard 3 mm x 3 mm
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safety or dichroic glass plus wire guard 12 mm x 12 mm
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Fresnel lens plus wire guard 25 mm x 25 mm.
Shields, lenses safety or dichroic glasses shall be changed if they have become visibly damaged to such an
extent that their effectiveness is impaired, for example by cracks or deep scratches.
ON NO OCCASION SHOULD THE LUMINAIRE BE USED WITHOUT THE ABOVE MENTIONED PROTECTION.
5. LAMP INSTALLATION AND REPLACEMENT
The following procedure should be adopted:
A - Ensure the luminaire is electrically isolated from the power supply.
B - WAIT LEAST 5 MINUTES FROM SWITCHING OFF to avoid risk of injury from possible lamp explosion.
Then open lens door or remove the safety mesh and / or glass.
WARNING: AFTER THE ABOVE MENTIONED TIME THE LAMP MAY STILL BE VERY HOT, USE
PROPER THERMAL PROTECTION (EG. GLOVES).
C - Check that the new lamp is of the correct type.
D - Replace the lamp taking good note of the following:
•
do not touch the bulb with bare-hands; oil and grease can contaminate the bulb surface and then
reduce the performance and the lamp life.
•
the plastic cover which protects the lamp should not be removed until after fitting.
•
should the bulb become dirty due to hand contact or for any other reason, it can be cleaned with a cloth
moistened with alcohol.
E - Ensure that any safety device that has been removed is refitted correctly or that the lens door is securely
closed.
