MTR 221 ACS - MTR 221 ACS DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
O
PTIONAL
I
TEMS
216
Model R 221 ACS - R 221 ACS DHHS
MT
R
2
21
ACS
-
MTR
2
21
AC
S DHH
S - Optio
nal Ite
m
s
Second laser which serves to center
the patient using the cross projection.
The collimator lasers are classified as
Class 1 (1 m W - wavelength = 645
mm, +/- 10 nm) and are used for
collimator/image receptor center
alignment.
C
ALIBRATION
C
ONTROL
• Draw a cross (two lines at 90°) on
a sheet of paper and use this as
reference.
• Switch the light ON and set the sheet of paper at 1 m from the focus.
• Make sure the cross on the paper coincides exactly with the two lines silk-screened on the
plastic window.
• Examine the laser projections on the paper: the laser is
correctly calibrated when the projections coincide with the
lines drawn on the paper, otherwise an adjustment will be
necessary.
A
DJUSTMENT
Horizontal
• Disconnect the collimator supply.
• Remove the laser cover located on the collimator cover by
unscrewing the two screws
A
, see
Fig. Horizontal Laser
.
• To correct horizontal misalignment, loosen the screws
B
,
see
Fig. Horizontal Laser
and move the laser support
until the projected laser line coincides with the cross on
the sheet of paper. Tighten screws
B.
Vertical
• Disconnect power supply.
• Remove the knobs and front panel, see Chapter-
C
OVER
R
EMOVAL
.
• To correct vertical misalignment, loosen the Allen screw
A,
see
Fig. Vertical Laser
on the
laser support; rotate the laser and align the laser line over the cross on the sheet of paper.
• To move laterally the laser loosen the screws
B
and shift the laser support until the
projected laser line coincides with the cross on the sheet of paper.
• Tighten
B
screw s
.
RO 587/2 Two lasers (one mounted externally) forming a crosshair to center the patient
to the collimator: Class 1
C
AUTION
: C
LASS
1
LASER
SYSTEM
DO
NOT
STARE
INTO
THE
BEAM
.
Fig. Laser Projections
Collimator
crosshair
projection
Laser line
projection
