BALANCER MAINTENANCE
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 dimensioning is such that it is maintenance-free for its entire work life. But if it is used under
particularly harsh conditions and requires any interventions,
ensure that the spring-drum group (7) is unloaded
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 (7) that is lubricated
for life. The spring-drum spare part (7) is supplied complete:
do not remove the spring for any reason
whatsoever.
Do not disassemble the spring group as this is a dangerous operation.
Replacing the cable.
Discharge the drum spring;
Remove the stop ring (1);
Hold bush (4) in place, using a 30-mm wrench, widen the spring (2) and lift the spring and the bush and then
remove the plate (5);
Remove screws ABC and loosen screw D by a few millimeters, raise flange E and replace the cable (8). Refit and
tighten screws ABC and D.
Reassembly.
Repeat the foregoing operations in reverse order.
WARNING: in order to insert the drum into the cover, the cable must pass through the specific notch G
in the flange F.
WARNING: after having inserted the bush (4) into the plate (5), insert it into the drum (7) by coupling the
spring and then place everything inside the cover. Hold bush (4) in place using a 30-mm wrench, widen
the spring (2) and then move down the bush (4) until it has entered the drum completely.
WARNING: if the greater diameter of bush (4) does not lower until it touches plate (5), this means that
bush (4) has not entered the drum’s support: stretch open spring (2) and oscillate the bush (4) until it is
completely inserted.
Finish the assembly by inserting ring (1).
Drum spring breakage
If the balancer is locked, check that the drum’s spring is not completely discharged (this condition would trigger
a locking as if the spring were broken); if you are unable to charge the balancer complying with the procedure
outlined in paragraph “Adjusting the balancer”, this means that the drum’s spring is probably broken.
WARNING: before carrying out any type of check, make sure the spring is discharged in actual fact.
WARNING - DANGER: never open the drum and/or attempt to replace the spring for any reason whatsoever.
This operation is extremely dangerous and could cause very serious injury.
Carry out the procedure outlined in paragraph “Replacing the cable” to disassemble the balancer and
replace
the entire drum
(the spring is NOT supplied as a separate spare part).
WARNING - DANGER: dispose of the drum containing the broken spring as specified by prevailing laws
and regulations. DO NOT abandon it or dispose of it together with other types of waste and/or scrap
because if it opens, even by accident, it is VERY DANGEROUS and could cause serious damage to
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.
Translation of the Original Instructions
ISTRUZIONI BILANCIATORI_man9080AX_9320AX-9323AX_06-2012.pmd
18/09/2012, 14.12
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