Revised 25 November 1999
Pag 3
.
4. WORKING CONDITIONS
Â
Working Position
Lighting fixture:
Max. Tilting
±
90° from horizontal
Lamp:
S90
Â
Ambient Temperature,
t
a
+45° C Max
Top
Back
Sides
Front
Â
Minimum distances from
inflammable surfaces
0,3 m.
0,1 m.
0,1 m.
1 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 the eyelet at the front of the body .
WARNING :
DO NOT MOUNT THE LUMINAIRE ON A NORMALLY FLAMMABLE SURFACE .
5. 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:
•
is among the usable lamps ( see point 6 or check with your De Sisti dealer )
•
has the same nominal voltage as the mains supply
•
has a nominal power not higher than maximum power of the luminaire.
D.
The front safety shields against the lamp explosion are present and in good condition.
They consist of fresnel lens plus wire guard . The fresnel lens is made by borosilicate untoughened
glass D = 150 mm , thickness = 5 mm typ ( 3 min ) , compliant to DIN 15560 . The wire guard is a mesh
25 mm x 25 mm ( or smaller ) , wire D = 0.8 mm typ , made by nickel coated or stainless steel .
WARNING :
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.
THE LUMINAIRE SHALL ONLY BE USED COMPLETE WITH ITS PROTECTIVE SHIELD .
6. 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 .
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 ( see item 5 .C).
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 the lens door is securely closed.
WARNING :
THE LAMP MUST BE REPLACED IF IT HAS BECOME DAMAGED OR DEFORMED .
