TECNA 9354 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 (27) is discharged before disassembling the balancer.
The spring is the balancer's only dangerous component. It is housed inside the drum (27) that is lubricated for life. The spring-drum spare part
(27) 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 (1); raise the cap (11); unwind the cable completely (28);
- Inspect the spring-drum group (27): if the internal spring is broken or the cable guide groove is damaged, replace the whole group. The
spring-drum group (27) is supplied assembled, lubricated and complete with bearings. Never open it for any reason whatsoever;
- Check the cable (28): replace it if is has the defects shown in (Fig.5);
- Check the working efficiency of all the shutter kinematics (6 and 13), check the screw (9), which should slide axially and turn, and the working
efficiency of the springs (7-8-12).
Balancer assembly:
- Check that the stop (23) is free to move;
- Fit the plate (25) on the end of the cable (28) and lock it in place with the screws (26);
- Wind the cable inside the drum's helical slots (27) paying attention to insert it into the stop (23) and assemble;
- Fit the cap (11) on the shaft (22), couple it to the cap (38) and close carefully. Tighten the screws (1) with a torque of 3 Nm;
- Once done, charge the spring of the group (27) with the screw (9), until the screw head (11) re-enters the cap 11 (Fig. 4);
- 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