7
a fraction of the power of a halogen lamp. HID has quickly become the
standard for exploration-grade lighting systems. Halcyon's Explorer and
Apollo lights require very little attention beyond the care given to a halogen
light. Although it produces 5% of its output when first ignited, the HID light
requires a few seconds (usually 15-20) to produce full output. Also, if power
to the lamp is lost or turned off (such as with an underwater pluggable
cord), the light ballast must be allowed a brief period to reset before being
reignited. Halcyon HID lights only require a brief 5 - 10 seconds.
The ballast in an HID lighting system provides the proper starting voltage to
strike and maintain the arc, and it regulates the proper current to the lamp
once the arc is established. Ballasts are not interchangeable among different
types of HID lamps. A ballast design incorporates electronic circuitry to
provide specific lamp/ballast operating characteristics.
With adequate care as outlined in this manual, your HID lamp should last
approximately 750 hours.
Special Considerations for HID Lighting Systems
The light emitted from the HID arc tube is intense and appropriate safety
p
recautions relating to exposure protection are required. Metal halide
bulbs operate at very high temperatures and pressures. The glass lamps
should be handled with care giving special attention to the quartz arc tube.
The Halcyon HID light is a DC lamp; proper electrical wiring polarity must
be observed to prevent damage to the lamp. Only certified Halcyon repair
technicians are authorized to work on Halcyon products; non-certified work
voids your Halcyon warranty.
CAUTION:
Ultraviolet, visible and infrared radiation is emitted from metal ha-
lide lamps. Possible skin or eye irritation can result from exposures exceeding
15 minutes. Do not stare at exposed lamp in operation. During operation, the
bulb should be enclosed in a housing to prevent injury. Do not remove bulb
from equipment until it has cooled. Never handle the bulb when it is operat-
ing. Keep your face away from the light head during ignition and operation.
P
rotect the arc tube when handling the lamp. Keep
the arc lamp clean. Do not touch the arc tube of the
21 watt HID, the inside surface of the reflector and
the connecting wires. Contamination can degrade
lamp performance or cause premature failures. If
necessary, clean the lamp by wiping with a lint-
free towel. Any interaction with the bulb should be
conducted very carefully. Bulbs break easily when
handled improperly and are not covered by warranty.
While HID bulbs last considerably longer than
halogen bulbs, you should be aware of several
r
!
21 watt HID Bulb