GAMMA X-Stringer X-ES STRINGING MACHINE (Issue 1 - May 2004) - Manual (Page 15)

14
Tension Calibration Procedure
If you suspect that tensioner is not pulling the
correct tension, you should check the tension
with a Tension Calibrator which provides a mea-
surement of the actual pulling tension being
applied by the machine.
With the tension set at 20 lbs, place one end of
a calibrator equipped with synthetic string into a
string clamp. Place the opposite end into the
string gripper and apply tension. If the measured
tension is inaccurate, remove the rectangular
cover from the L.E.D. display cover plate cover.
Rotate screw (“Low LBs”) in small increments until the displayed tension matches the
tension indicated on the calibrator. Set the machine tension to 60 lbs. and apply tension to
the calibrator. If the measured tension is innacurate, rotate screw (“High LBs”) in small
increments until the displayed tension matches the tension indicated on the calibrator. Since
adjustment of the “Low LBs” screw at 20 lbs can influence the tension at 60 lbs and visa
versa, repeat these steps until the set tension matchs the tension reading of the calibrator
at both 20 and 60 lbs. Replace the rectangular cover in the L.E.D. display cover plate.
To switch from Lbs to Kgs, slide the units selection switch to the left for “LBs” and to the right
for “KGs”.
Please note that there will be a range of tension from the maximum tension at which the
tensioner stops pulling (high end of the range), to the minimum tension at which the tensioner
starts pulling again (low end of the range). This difference between the high and low end of
the range can vary from 2-4 lbs depending on the string used to calibrate the machine and
the speed of the tensioner. For consistency, we recommend that the tension setting of the
machine be calibrated as close as possible to the high end of the range, which is the method
used at the factory. Using this method will be the most consistent and will also insure that
the racquet will not be over tensioned.
MAINTENANCE and ADJUSTMENTS
High KGs
Low KGs
Low LBs
Units
Selection
Switch
LBs KGs High LBs