26
Balance mechanism digital display calibration
21
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 (
21.1 Level the platform and apply the tilt brake.
21.2 Turn the balance knob
fully clockwise to its maximum stop.
21.3 Press and hold the switch
for approximately eight seconds, until the digital display
shows
CA. Release the switch
. The display shows HI.
21.4 With the balance knob
still turned fully clockwise, press and release the switch
display will now show LO.
21.5 Turn the balance knob
fully counter-clockwise to its minimum stop.
21.6 Press and release switch
.
21.7 If the calibration is successful, the display will now show 00.
21.8 If unsuccessful, Er will be displayed. Pressing the switch
again, or waiting for 15 seconds, will
allow the system to revert to its previous settings. Calibration may now be carried out again.
21.9 After calibration, rebalance the head.
NOTE:
If more than 15 seconds is allowed to elapse between steps, the system will shut down and
revert to its previous settings.
Fig 4.5 Balance Mechanism Digital Display Calibration
(1)
(3)
(2)