Sirona HELIODENT Vario, Руководство по эксплуатации

Страница: 47 / 110

Sirona Dental Systems GmbH 5 Operating
60 81 967 D 3350
D 3350.201.02.08.02
17
5.4 Releasing an exposure
CAUTION
Observe radiation protection regulations, see
page 4.
Check for correct exposure data.
• The standby indicator lamp (2) is illuminated.
• Release exposure by holding down the release button
(7).
The X-RAY LED (3) remains lit up during the entire
exposure.
The exposure time is also indicated by an acoustic sig-
nal.
During operation by remote control, the LED (3) on the
remote control is also lit up.
• The exposure is finished when the radiation automati-
cally switches off.
The Ready LED (3) remains switched off until the auto-
matic tube cooling delay has expired (automatic expo-
sure interlock).
Example: For 0.40 s exposure time and a pulse-to-
pause ratio of 1 : 30 12 s automatic exposure blocking
results.
Interrupting an exposure
The exposure can be interrupted by simply letting go of
the release button.
The elapsed exposure time will then flash together with
the Ready LED.
If you then press the time selector (5), the elapsed expo-
sure time will stop flashing and the previously set expo-
sure time will reappear on the display.
The unit is again ready for operation following the auto-
matic tube cooling delay.
Repeat the exposure. Insert a new film cassette before
taking another film exposure.
The unit may remain switched on until you have fin-
ished working.
Error message
If an error or fault is detected during an exposure, the
exposure will be automatically interrupted. The error
code will then appear on the digital display and the
Ready LED will simultaneously switch off.
7
2
3
5
7 3
Not removable
in USA/CAN
Remote control