A5. Calibrating the tension system.
The tension system can be calibrated with the calibrator which is supplied with the machine. The
tension will not vary more than a few percent over the hole stroke. To get the most accurate results
calibrate the system in the middle of the stroke between the forward position and the moment that the
“end of stroke signal” starts to move.
Adjust the tension at 20 kg / 44 lbs and attach the tensioner to one of the adjusting bolts as shown in
the picture. Lock the turntable with the calibrator parallel with the main frame.
Tension the string of the calibrator and watch the pull rod of the calibrator:
- In situation 1 the tension is correct, the end of the marks is level with the end of the red housing.
- In situation 2 the tension too low, the end of the marks is still inside the housing.
- In situation 3 the tension is too high.
To adjust the tension.
The tension can be adjusted with the bolt that moves out of the housing when the tension arm is lifted
to the maximum. Turn the hexan bolt clockwise to raise the tension and anti clockwise to lower it.
IMPORTANT: Only adjust calibration bolt while the lever is at maximum height.
Check the tension after every adjustment by lowering the lever.
