SIGMA projetor - Manual (Page 15)

OPERATING INSTRUCTIONS
2.4
STEP 2
WARNING
Ensure that the available length of the control cable is greater than the total length of the
source guide tubes. See the technical specifications section for details.
If the remote control conduits are shorter than the total length of the source guide tubes:
1
The source assembly cannot be projected all the way to the source stop of the terminating
source guide tube and be correctly positioned for the exposure.
2 The source assembly may not reach a collimator; therefore, restricted area dose rates may be
higher than expected.
3 The control cable end may be cranked beyond the drive wheel of the remote controls if the drive
cable is not be fitted with a safety retaining spring. This scenario must be treated as an
EMERGENCY.
STEP 3
Remote Control Conduit Layout
Lay out the remote control conduits as straight as possible, with no bend radii less than about 36 in
(approximately 1 m).
Avoid any risk of crushing the remote control conduits by falling objects, moving vehicles or closing
doors, etc.
The remote control crank mechanism (operator's hand-crank) should be placed as far away from the
source focal position as possible (preferably behind shielding).
Connecting the Remote Control Cable
Connect the control cable to the source projector as shown.