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Correct Operation
and Warnings For High Intensity Discharge Lamps:
High intensity discharge (HID) lamps require auxiliary equipment
(ballasts, capacitors, ignitors or power supplies) to provide the
correct electrical values for starting and operating. This auxiliary
equipment must meet all electrical specifications outlined by the
American National Standards Institute (ANSI). Venture Lighting International
will not be responsible for poor performance, personal injury, property
damage, burns or fire from lamps operating on unapproved auxiliary
equipment or from lamps being operated in a manner inconsistent
with their design.
Power should
always be turned off and preferably locked out in accordance with
OSHA guidelines whenever installation, removal or maintenance is
performed on lighting systems. Safety glasses and gloves should
be used when installing or removing HID lamps. Lamps should be installed
firmly into appropriate lamp sockets, without over tightening, to
avoid loosening from vibration.
HID lamps and
their arc tubes operate at extremely high temperatures and may shatter
as a result of misapplication, system failure or other factors.
Scratches on the outer bulb, direct contact with water or excessive
installation pressure can also cause the lamps to break. Breakage
may release extremely hot glass and lamp parts into the surrounding
environment and raise the risk of fire, personal injury or property
damage. Injury may also be caused by ultraviolet energy from an
unjacketed HID lamp. If the outer jacket should break, immediately
turn the power off. Do not remove a lamp until it has completely
cooled; then replace it with a new Venture® lamp. In areas susceptible
to contamination by flying glass, where flammable materials are
present or where there is a possibility of personal injury, users
should seek additional protective measures by using open fixture
(O-rated) lamps and enclosed luminaires.
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Federal Compliance
- Metal Halide
Venture®
lamps comply with USA Federal Standard 21 CFR 1040.30 and Canada
Standard SOR/80-381.
"WARNING:
This lamp can cause serious skin burn and eye inflammation from
shortwave ultraviolet radiation if outer envelope of the lamp is
broken or punctured and the arc tube continues to operate. Do not
use where people will remain for more than a few minutes unless
adequate shielding or other safety precautions are used. Lamps that
will automatically extinguish when the outer envelope is broken
or punctured are commercially available."
Careful adherence
to the precautions mentioned above may not eliminate all possible
risks associated with the use of metal halide lamps, but will reduce
the likelihood of personal injury or property damage.
End-of-Life
and Reduction of Risk
At
end-of-life, the vast majority of metal halide lamps will fail simply
by not reigniting. On rare occasions, metal halide lamps may fail
in a violent manner. The possibility of this failure is significantly
reduced by group relamping at or before the rated end of life. (see
Group Relamping) In any application where lamps are operated continuously
(24 hrs/day, seven days/week), the lamps should always be turned
off for a period of at least 15 minutes once a week, a precaution
that can reduce the possibility of violent failures. This procedure
is not required when Venture’s open rated, shrouded lamps are
used. These lamps are easily identified by the "MP" or
"MPI" in the order code.
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Starting
and Restarting Characteristics
Probe
start metal halide lamps will start at an ambient temperature of
-30°C (-22°F) or higher. Full light output does not occur
immediately when power is applied to any metal halide lamp; there
is a time delay of at least two to four minutes after starting before
lamps reach full light output. After lamps have started, a power
interruption of 1/4 cycle (1/240th of a second) or more may cause
the lamps to extinguish. Several minutes are required before an
arc can be re-established by the ballast and full light output achieved.
The exact time is dependent on a number of factors including lamp
wattage, ballast and ignitor characteristics, ambient temperature,
fixture dimensions and supply voltage. The time needed to establish
full light output can be as short as three minutes and as long as
15 to 20 minutes. In general, pulse start technology dramatically
decreases the time for hot restart. Venture’s exclusive Uni-Form
pulse start formed body arc tube provides warm-up and hot restrike
in up to 60% less time and allows better starting, even down to
-40°C (-40°F).
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