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 (13) is unloaded before disassembling the balancer.
The spring is the balancer’s only dangerous component. It is housed inside the drum (13) that is lubricated for life. The spring-drum spare part (13) 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 11 and the washer 12;
Hold bush 6 in place, using a 30-mm wrench, widen the spring 9 and lift the spring and the bush and then remove the plate 4;
Remove screws ABC and loosen screw D by a few millimeters, raise flange E and replace the cable (15). Refit and tighten screws ABC and D.
Reassembly.
Repeat the foregoing operations in reverse order.
WARNING: before you position the drum into the cover, check that the slot of cam 5 has been inserted into the matching pawl of lever 8 and that spring
7 is in place. As concerns models 9346-50 pay attention to the position of the centrifugal masses X.
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 6 into the plate 4, insert it into the drum 13 by coupling the spring and then place everything inside the cover.
Hold bush 6 in place using a 30-mm wrench, widen the spring 9 and then move down the bush 6 until it has entered the drum completely.
WARNING: if the greater diameter of bush 6 does not lower until it touches plate 4, this means that bush 6 has not entered the drum’s support: stretch
open spring 9 and oscillate the bush 6 until it is completely inserted.
Finish the assembly by inserting washer 12 and ring 11.
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.
ISTRUZIONE BILANCIATORI_man 9072_9336-9350_12-2009.pmd
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