Safety Devices - TECNA 9502AX Manual De Uso

If screw-fixing devices are used to install the balancer, use self-locking nuts, split-pins or other safety systems.
Always connect the safety suspension S, using exclusively the supplied standard fittings (Fig.1), to a suitably
sized support. The safety support MUST NOT BE the same one used for the main suspension 23 (Fig.1). If the main
suspension breaks, the max falling distance must not be more than 100 mm. Tighten the nuts of the clamps 20331 (Fig.1)
at a torque of 4 Nm.
To avoid anomalous wear, the load must be applied vertically and in any case the cable must be free to line up with the direction
of the load.
Using the balancer
ATTENTION: when using the balancer, do not exceed the hanging load shifting speed of 0.8 m/s.
ATTENTION: the admissible room temperature interval ranges from -20°C to +40°C.
Grip the tool hanging from the balancer and carry out the required operations. Then accompany the tool until it balances, on the
vertical line of the balancer, and release it.
The load to be balanced must be hung on snap-hook 39 (Fig.3). Ensure that the snap-hook is properly closed after having hung
the load.
ATTENTION: the electric potential of the hung tool must always be the same as that of the balancer.
The cable must never be unwound all the way: its work travel must end at least 100 mm before it reaches the lower limit
(balancers 9502AX÷9509AX - 9520AX÷9525AX are fitted with an automatic limit stop system).
If need be, move and lock the clamp 37 (Fig.3) to stop the upward stroke.
When using the balancer, always don individual protective gear and closely adhere to the prevailing accident prevention regulations.
It is strictly prohibited to:
- Abandon the load if it is not in a vertical position
- Swing/throw the hanging load to another operator
- Move the load by pulling the balancer's cable
- Hang loads that are not within the upper and lower ranges of the admissible load-bearing capacity
- Hang more than one tool on the balancer
The sole risk linked to the use of the balancer consists in any uncontrolled rewinding of the cable. This very
dangerous event will be avoided by adhering to the following instructions:
- if you have any doubts concerning the working efficiency of the balancer, BEFORE performing any kind of inspection be sure
to hold up the hanging tool to prevent it from falling and DISCHARGE THE SPRING COMPLETELY.
Should one wish to fully discharge the spring, stop the discharging operation as soon as the spring is effectively
and completely discharged (proceeding beyond this position would damage the spring which would require to
be replaced).
- if for any reason whatsoever the balancer does not rewind the cable, DO NOT do anything on your own initiative but contact
the customer service at once
- never release the load if the cable has not been fully wound in the drum
- if the balancer's cable is unwound and no load applied to it, DO NOT do anything on your own initiative but contact customer
service at once
Adjusting the balancer
To enable the balancer to balance heavier loads, use the specific key to turn screw 41 (Fig.3) in the direction indicated by
symbol "+". For lighter loads, turn screw 41 (Fig.3) in the direction indicated by symbol "-".
After having adjusted the load, check that the cable slides freely for its entire length: the movement must not be restricted when
the spring has wound all the way. Check the stroke often and at different speeds.
NOTE: should the balancer's capacity of supporting a hanging load decrease, this could mean that the spring of the
drum is about to break. DO NOT MODIFY BALANCER ADJUSTMENT TO MAKE IT HOLD UP THE LOAD IN ALL CASES
BUT CONTACT SKILLED PERSONNEL IN CHARGE OF MAINTENANCE AT ONCE.

Safety devices

Drum spring breakage
The balancer is fitted with a safety device that trips when the drum spring breaks and stops the balancer to prevent the hanging
load from falling.
If the hanging tool cannot be lifted or lowered through ordinary strain, DO NOT INSIST but contact customer service.
NOTE: the balancer stops even if the drum spring is fully discharged: in this condition the head of the charge screw 41
(Fig.3) protrudes approximately 4 mm outside the cap. To restore operating conditions, try to charge the spring as
outlined in paragraph "Balancer adjustment". If the balancer does not release, DO NOT do anything and contact
customer service.
Manual lock
The balancer is fitted with a manual-locking system (Fig.4): turn the knob (6) to position (A) to stop drum rotation. Turn the knob
(6) to position (B) for routine work conditions.
NOTE: for safety reasons, the shape of the shutter that stops the drum does not allow the shutter to be removed
unless it is perfectly coaxial with the matching hole in the drum: to release the drum, move the load slightly at the top