DENTSPLY Spectrum 800 Guía De Operación página 9

At the end of each exposure, a beep with a slightly higher tone will sound. The high speed cooling fan will start at
the beginning of each exposure and will continue to run for up to 5 minutes after each exposure before automatically
shutting off. Do not turn off the main power or unplug the unit until the fan has finished this cycle.
The Spectrum ® 800 curing Light is protected from overheating by thermal safety devices. Should the unit
overheat, it will automatically turn off until normal operating temperatures are reached.
RADIOMETER
NOTE: This radiometer is intended for use with the Spectrum ® 800 Curing Light and general operation is
based on using the standard 8mm, 60° probe.
The Spectrum ® 800 Curing Light comes with a built-in light intensity radiometer and LCD digital readout. It warns of
falling output on the curing system well before problems arise. Typical problems that can arise are:
• The lamp is most often the problem. Even new lamps of the same type vary in output. With use, darkening
and frosting of the lamp or degradation of the reflector will lower output.
• The Optical Filter transmission degrades. It sits near the lamp to block out light not in the 400 to 500nm
range. Curing lamps create heat that can eventually cause a filter to crack, peel or discolor.
• The Fiberoptic Light Probe may have material cured on the tip or may have been damaged. Individual
fibers within the probe tend to break or the actual probe may fracture with impact.
These conditions develop over time, and the resulting lowered output is impossible to detect with the eye. Without
the Radiometer test, dentists become aware of problems only when restorations fail.
To use the Radiometer, simply activate the lamp of the Spectrum ® 800 Curing Light, hold the fiberoptic light probe
tip directly on the radiometer bulls-eye on the base and note the intensity reading on the LCD of the hand-piece
(Figure 2).
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- > 300 mW/cm : indicates the lamp intensity is sufficient and the system is functioning properly.
2
- < 300 mW/cm : if the lamp intensity can not be adjusted above or the lamp intensity reads less than
300mW/cm
damaged components (lamp, filter, probe) are replaced and the Radiometer reading does
not indicate or can not be adjusted above 300mW/cm
ment.
OPTIONAL POWER INTENSITY ADJUSTMENT
For routine curing needs the Spectrum ® 800 power intensity should be adjusted to ~550mW/cm
Spectrum ® 800 is equipped with a manual intensity power adjustment on the base unit. The intensity can be
adjusted from 300 mW/cm
Up/Down adjust buttons (Figure 2). Use of this variable output feature is at the sole discretion of the clinician.
DENTSPLY International does not, at this time, make any specific technique recommendations regarding the
clinical use of this variable light output feature. The information provided in the "Variable Intensity Feature
Technique Card" is for general "guidance" purposes only, and does not constitute a specific technique rec-
ommendation by DENTSPLY International.
To increase/decrease the intensity of the Spectrum ® 800, the light must be activated and the light probe
•
properly centered on the radiometer opening. Once the LCD on the back of the hand-piece displays the
output, the intensity can then be increased/decreased in increments of 50 mW/cm
To decrease the intensity press the "Down" ▼ (arrow) button (SW3) and to increase the intensity press the
•
"Up" ▲ (arrow) button (SW4) on the base unit, see Figure 2. An audible tone will be heard when the buttons
are depressed and a confirming tone will sound once the intensity has been adjusted to a new setting.
2
(when using the standard 8mm, 60° probe), the unit should not be used. If
2 2
up to 800 mw/cm when using the standard 8mm, 60° probe by depressing the intensity
2
call your distributor service depart-
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2
. In addition, the
2
.