Pag.
19
OPERATING INSTRUCTIONS
ORIX 70
CAUTION!
The SELEMATIC x-ray control is programmed by default on D film sensitivity which corresponds
to DIGITAL - Film D - 0,05 secs-patiente medium-incisor-maxillary arcade. When the main switch
is activated (green light - ref. n.7) the following data, memorised by the microprocessor, are
displayed on the symbols relative to patient and tooth
Changing the sensitivity of the film with the relative key (ref. n.3) the exposure time is
automatically modified whilst the other two technical factors relative to the size of the patient (red.
n. 10) and the tooth (ref. n. 12) remain the same. The exposure time values displayed are as follows:
MEDIUM PATIENT – MAXILLARY INCISOR
FILM
GROUP D (RVG)
0,05 s
S
GROUP 1
0,51 s
D
GROUP 2
0,35 s
E
GROUP 3
0,24 s
F
GROUP 4
0,14 s
a)
Select the work station pushing the relative key (ref. n.8)
b)
Select the type of tooth (ref. n. 6 for mandibular arcade and ref. n. 12 for maxillary arcade) using
the left and right arrows (ref. n. 5)
c)
Select the type of patient (large/medium/small) using the left and right arrows (ref. n.4)
d)
Press “ENTER” (ref. n. 2), automatically the LED of all the selected technical data
(patient/tooth/generator) will start to blink. This means that the microprocessor has confirmed
the chosen factors and therefore the x-ray control is ready to activate the x-ray generator.
e)
press the x-ray key (ref. n. 14) and keep it pressed for the whole count-down time until the
display reaches zero. During this phase, the x-ray LED will lighten (ref. n.9) and a BEEPER will
give an acoustic warning for the whole time of radiation.
f)
At the end of the exposure time (zero setting of the display and stop of the BEEPER) the x-ray
control goes into sleeping mode (pause) and will remain inoperative for a minimum time which
is 30 times the exposure time previously executed.
Example:
Exposure time
0.4 seconds
Pause time
12 seconds
