Vinten Vision 250 E Maintenance Manual page 29

Contents
11.4 Turn the knob clockwise to the 17° position.
11.5 Screw in the securing screw (1). Do not overtighten.
12 Turn the knob clockwise and ensure that the brake is fully applied before the upper stop is reached.
13 Turn the knob counter-clockwise and ensure the brake is released before the lower stop is reached.
14 Re-adjust the position of the knob if necessary.
Balance mechanism digital display calibration
15 The digital display indicates setting of the balance mechanism on a scale of 00 (minimum setting) to HI
(maximum setting). In the unlikely event of this system requiring calibration, proceed as follows
15.1 Level the platform and apply the centre lock (1).
15.2 Turn the balance knob
NOTE: If more than 15 seconds is allowed to elapse between steps, the system will shut down and
revert to its previous settings.
15.3 Press and hold the switch
CA. Release the switch (4). The display shows HI.
15.4 With the balance knob (2) still turned fully clockwise, press and release the switch (4). The
display will now show LO.
15.5 Turn the balance knob
15.6 Press and release switch (4).
15.7 If the calibration is successful, the display will now show 00.
15.8 If unsuccessful, Er will be displayed. Pressing the switch
allow the system to revert to its previous settings. Calibration may now be carried out again.
15.9 After calibration, rebalance the head.
(2) fully clockwise to its maximum stop.
(4) for approximately eight seconds, until the digital display
(2) fully counter-clockwise to its minimum stop.
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(4) again, or waiting for 15 seconds, will
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(Fig 4.3):
(3) shows
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