Cembre RDS-14P Operation And Maintenance Manual page 17

6.2) Adjusting the automatic support arm
Operation always to be carried out with the machine turned off and with the arm in a
stationary position.
The AA-RDS support arm is provided with an adjustment ring (4) to allow the suspension load
to be varied which in turn aff ects the force required to be applied at the cutting point according
to the type of cutting disc, rail hardness and internal or external track positioning. The ring
is usually set to 15 for optimal function of the rail saw under the following conditions of use:
– Cembre ø 350 mm cutting disc type CRDL 4381 or CRDL 4387 or similar.
– Rail to be cut type UIC 60 or similar.
The adjustment ring (4) can be rotated in both directions along a graduated scale from 0 to 50, on
one face of the hexagon is a corresponding reference mark.
Pos. 0 (no load suspension) corresponds to the maximum force at the cutting point, the rail saw
presses on the rail much more;
Pos. 50 (maximum load suspension) corresponds to
the minimum force at the cutting point.
Adjustment may be required for several reasons
including:
- The rail saw turns off or the engine tends to
turn itself off shortly after starting cutting
at the rail head level?
In this case, decrease the cutting force, rotate
the ring a couple of turns towards higher values.
- The rail saw moves slowly or stops towards
the end of the cut, jamming at the intersection
between the rail web/foot?
In this case, increase the cutting force (rotate the ring a couple of turns towards lower
values) although, there is a risk of overheating the cutting area and the cutting disc,
compromising its use.
Re-start the machine and check its function, making further adjustments if necessary.
NOTE: with the positioning of the machine on the external track, usually a lower cutting force is
required compared to the internal track, due to the inclination of the rails.
6.3) Overturning the automatic support arm
Overturning the arm must be done with the rail
saw dismounted. WARNING - Hand crushing hazard!
The AA-RDS automatic support arm can be
overturned from one side to the other without needing
to be removed from the rail, to allow cutting to be resumed
in a comfortable and precise manner. To carry out this opera-
tion, after having removed the rail saw from the AA-RDS arm,
follow these steps:
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