![background image](http://html.mh-extra.com/html/stertil-koni/freedomlift-sk-2055/freedomlift-sk-2055_installation-and-service-manual_1375427044.webp)
Installation and Service Manual
44
SK 2055 / 2070 / 2090
• All outputs are switched off if an elevation difference greater than 60 mm is
detected, whether the vehicle lift is in operation or idle.
• The lowering and unlock functions are disabled whenever an elevation
difference greater than 30 mm arises. Raising remains possible.
• The raise function is interrupted whenever the elevation set for the maximum
position is reached, or whenever the elevation limiter switch in the upper
crossbar and/or the top position switch is triggered.
6.4 Elevation control
Differences in the elevation between the two posts can arise through
temperature differences, elastic compression and slight internal leakage in the
system. This can occur both when idle and during use. For the vehicle lift to
function correctly, it is essential that both guide pieces are at the same height.
The control system monitors and corrects any elevation differences that may
arise.
Correction only takes place when the vehicle lift is being raised or lowered, and
is done by adjusting one of the lowering valves. This works as follows:
• If one guide piece reaches a greater height than the other during raising,
this guide piece's lowering valve is opened. This guide piece then continues
to rise at a reduced speed until the two guide pieces are back at the same
height.
• If one guide piece reaches a lower height than the other during lowering,
this guide piece's lowering valve is partially closed. This guide piece then
continues to lower at a reduced speed until the two guide pieces are back at
the same height.
6.5 Starting position
1. Check that all hydraulic lines and electrical wiring has been connected up.
2. Bleed the hydraulic hoses.
3. Attach the peg on the potentiometer wire to the guide pieces. Keep three of
the rings visible.
4. Spray the aluminium peg with acid-free Vaseline.
5. Calibrate the potentiometers using programme code 67 See Code 67
- Adjusting potentiometers on page 49. This will read the electrical
resistances of the potentiometers.
Summary of Contents for Freedomlift SK 2055
Page 108: ...Installation and Service Manual 108 SK 2055 2070 2090 14 2 Electrical diagram 3 x 230V ...
Page 109: ...Installation and Service Manual 109 SK 2055 2070 2090 14 3 Electrical diagram 3 x 400V ...
Page 113: ...Installation and Service Manual 113 SK 2055 2070 2090 14 6 Dimensions SK 2055 3 piece arms ...