15
Payload Weight And C of G Height Adjustment
The fore and aft balance must be set before adjusting the payload weight and
C of G height adjustment.
NOTE: If the correct numerical balance setting of the payload is known, tilt the
platform to the horizontal position and turn the counterbalance crank until the
numerical display shows the correct setting.
1. Using the handle, tilt the platform downwards and upwards. When
correctly balanced, there should be no perceptible tilting force on the
handle at any angle of tilt and the head should remain in any tilt
position to which it is set.
2. If the head tends to fall away when the platform is tilted, the
counterbalance will need to be increased. If the head tends to spring
back when the platform is tilted the counterbalance will need to be
decreased.
3. Set the platform level, unfold the counterbalance crank handle and turn
it clockwise to increase or counter-clockwise to decrease the
counterbalance setting as required.
4. Using the handle, tilt the platform upward and downward to recheck the
balance. Readjust counterbalance until balance is achieved.
5. Make a note of the final numeric counterbalance setting to simplify
rebalancing this particular payload.
6. When the payload weight and C of G height adjustment is complete,
check that the fore and aft balance is still correct. Re-adjust the
position of the sliding plate if necessary.
7. After balancing, exercise the head through the full range of pan and tilt
to confirm that it operates smoothly.
Locking The Platform
The tilt lock pin mechanism is operated by a flip lever on the left-hand side of
the head. To engage the pin, hold the pla tform in the horizontal position and
flip the lever over from the green position to the red position. If necessary,
use the handle to rock the head slightly to achieve the fully locked position.
The pin and flip lever will snap towards the platform as the pin engages.
To release the tilt lock pin, flip the lever over from the red position to the green
position. If the platform is not balanced this may require force. If so, make
sure that the tilt lock lever is rotated clockwise to hold the platform in place.
Operator's Guide - OConnor 2575D Pan and Tilt Head
www.ocon.com
OConnor Engineering
