16
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 digital balance setting of the payload is known, tilt the
platform to the horizontal position, press the display actuator button and push
in and turn the counterbalance crank until the digital 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, press the display actuator button and push in and
turn the counterbalance crank to increase or 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 counterbalance setting to simplify re-balancing
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 platform 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 120EX Pan and Tilt Head
www.ocon.com
OConnor Engineering
