MNL-00007 [3] Proprietary and Confidential Page 18 of 63
4. Press the ◄ key two times. The screen will now read “05:00”.
5. Press the ENTER key one time to lock in the backup time.
6. Press the MODE key one time to switch to dose entry mode.
7. Press the ▲ key five times. The screen will now read “0005”.
8. Press the ◄ key until 5000 is displayed if checking a UVB device or 50.0 is displayed if
checking a UVA device.
9. Press the ENTER key one time to lock in the dose.
10. Press the ENTER key a second time to begin the treatment. The lamps will now come
on. When measuring ultraviolet be sure to apply SPF 30 sunscreen to exposed areas of
the skin and wear goggles while monitoring the device.
11. Once the treatment begins press the MODE key one time to view the time counting
down. Allow the device to run until 30 seconds remains. While waiting step away from
the unit to limit unnecessary exposure to UV light.
12. With 30 seconds remaining press the POWER key one time. The system will display the
power output of the lamps. A value such as P9.0 (example) will display. Write down the
value.
13. When the machine shuts off, press the END key to clear the treatment and return the unit
to its energy saving mode.
Once you know your power output (9.0 mW/cm2 in the example above) consult the
laminated Backup Time Chart, a partial example of which is included Table 2 Partial
UVB Backup Time Chart below. The numbers in the top row of the chart (horizontal
axis) represent a range of power output values. Find the value that is closest to the power
output of your device.
The numbers in the left most column (vertical axis) represent a range of treatment doses.
Find your desired dose and trace that row to the right until it intersects with the column
corresponding to the current power output of your device. The backup time is shown
where the two lines intersect. The times are rounded up to the nearest 10-second
increment. On the partial time chart thirty (30) seconds is the backup time for a power
output of 9.0 mW/cm2 and a dose of 280 mJ.
Table 2 Partial UVB Backup Time Chart
The UVA Backup Time Chart (not shown here) is configured the same as the UVB Backup Time
Chart however the doses are listed in Joules and the energy output levels and backup times are
different than the UVB output levels. Each chart is clearly marked.
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