TECNA 9502 Manuel D'utilisation page 20

This part of the manual is intended for maintenance personnel ONLY
CERTAIN OPERATIONS OUTLINED IN THIS SECTION ARE VERY DANGEROUS AND COULD INJURE PEOPLE IF
PERFORMED BY UNSKILLED PERSONNEL.
REFER TO THE OPERATING MANUAL TO INSTALL, ADJUST AND USE THE BALANCER.
Maintenance
The balancer's size is such that it is maintenance-free for its entire work life. However, if it is used under particularly harsh
conditions and requires any interventions, ensure that the spring-drum group (16) is discharged before disassembling
the balancer.
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).
The spring is the balancer's only dangerous component. It is housed inside the drum (16) that is lubricated for life. The spring-
drum spare part (16) is supplied complete: do not remove the spring for any reason whatsoever.
Do not disassemble the spring group as this is a dangerous operation.
Removing and inspecting the balancer
- Remove the screws (8); raise the cap (10); unwind the cable completely (36);
- Inspect the spring-drum group (16): if the internal spring is broken or the cable guide groove is damaged, replace the whole
group. The spring-drum group (16) is supplied assembled, lubricated and complete with bearings. Never open it for any
reason whatsoever;
- Check the cable (36): replace it if is has the defects shown in (Fig.5);
- Check the working efficiency of all the shutter kinematics (4 - 14 and 19), check the screw (41), which should slide axially and
turn, and the working efficiency of the springs (3 - 13 - 40).
Balancer assembly:
- Check that the stop (19) is free to move;
- Fit the plate (32) on the end of the cable (36) and lock it in place with the screws (18);
- Wind the cable inside the drum's helical slots (16), carefully insert it in the stop (19) and assemble;
- Fit the cap (10) on the shaft, couple it to the cap (20) and close carefully. Tighten the screws (8) with a torque of 3 Nm;
- Check the working efficiency of all the shutter kinematics (4 - 14 and 19), check the screw (41), which should slide axially and
turn, and the working efficiency of the springs (3 - 13 - 40).
- Install the balancer adhering to the directions supplied in the "Balancer operating manual".
Spring drum breakage
- If the balancer is blocked, check that the drum spring is not discharged (condition that blocks the balancer as if the spring
were broken). If you are unable to charge the balancer by adhering to the procedure described in paragraph "Balancer
adjustment", this means that the drum spring is probably broken.
WARNING: ensure that the spring is charged before carrying out any type of check.
WARNING - DANGER: DO NOT open the drum and/or attempt to replace the spring for any reason whatsoever.
This operation is extremely dangerous and could seriously injure anyone.
WARNING - DANGER: dispose of the drum containing the broken spring in compliance with prevailing regulations.
DO NOT dump it together with other waste or scrap since opening it, even accidentally, is VERY DANGEROUS
and could seriously injure anyone.
Use original TECNA S.p.A. spare parts only. When requesting spare parts, the Customer should kindly contact the supplier
of the balancer, or the manufacturer directly, specifying the machine's identification data printed on the plate.
BALANCER MAINTENANCE
Translation of the Original Instructions