MTR302/A - R302F/A - R302L/A DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
Modello/Model R302/A
Installation
1
R302/A
- I
n
st
allation
Ralco
srl
INSTALLATION
M
OUNTING
THE
C
OLLIMATOR
TO
THE
X-
RAY
T
UBE
• Use the X-ray tube housing literature to determine the distance from the focal spot to the
tube port face.
• Subtract the resulting distance from 80 mm (3.14") and determine the number of 1.5mm
(0,06") spacers that, combined with the thickness of the mounting flange, will make up the
difference: (20 mm for fixing flange, 18 mm for rotating flange) Allowable tolerance is 1 mm.
(0.04").
• Make sure that the flange is the flange supplied with collimator. See
Figure - Flange
in this
Chapter.
• Mount the flange and spacers to the tube port with 4 M6 countersunk bolts that must be
long enough to be driven into the tube port face for at least 5 threads.
• Tighten the bolts.
• Unscrew the four mounting and centering adjustment Allen screws until the four tabs are
withdrawn from the collimator top opening. See
Figure - Flange Mounting
in this Chapter.
• Manually adjust the collimator shutters to their widest setting.
• Carefully couple the collimator with the tube to determine that the primary shutters have
enough clearance to move in the port opening and in the mounting flange. See
Figure
Chapter
C
OMPATIBILITY
C
OLLIMATOR
/X-
RAY
T
UBE
.
Note: Collimators without extra-focal shutters do note require the preceding two controls.
• Place the collimator on the flange. Tighten the four mounting screws equally until the colli-
mator holds firmly on the tube housing.
See
Figure - Flange Mounting
in this Chapter.
• The collimator control tabs conform to
EN 60601-1- par 28.4
. Ralco recommends an
appropriate force which ensures safe locking of the tabs min. 0.75 Nm (± 5 cNm)
CAREFULLY
FOLLOW
THE
MOUNTING
INSTRUCTIONS
AND
MAKE
SURE
THAT
THE
COLLIMATOR
IS
CORRECTLY
ASSEMBLED
.
INCORRECT
MOUNTING
COULD
BE
DANGEROUS
:
IT
COULD
CAUSE
THE
COLLIMATOR
TO
FALL
OR
TO
OPERATE
INACCURATELY
.
TO
SAFEGUARD
THE
OPERATOR
AND
PATIENT
AGAINST
THE
HAZARD
OF
A
FALLING
COLLIMATOR
,
THE
FOLLOWING
INDICATIONS
MUST
BE
RESPECTED
.
WHEN
UNSCREWING
THE
ALLEN
SCREWS
WHICH
CONTROL
THE
TABS
,
DO
NOT
USE
FORCE
EXCEEDING
0,55
NM
.
UNSCREW
WITH
CARE
SO
AS
NOT
TO
DAMAGE
THE
FIXING
TABS
.
MAKE
SURE
TO
TIGHTEN
THE
M
6
ALLEN
SCREWS
SECURING
THE
CONTROL
TABS
.
APPROPRIATE
TIGHTENING
OF
THE
4
ALLEN
SCREWS
ENSURES
SECURE
MOUNTING
OF
THE
COLLIMATOR
.
TIGHTENING
FORCE
USED
MUST
BE
GREATER
THAN
0.50
NM
.