Renova PWR 170 B, Руководство по сборке и обслуживанию

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replacement of electromagnetic powder
The powder brake (clutch) does not require any particular maintenance other than a periodic
replacement of the magnetic powder which allows the brake to operate correctly.
The replacement of the powder must be performed in a few steps:
1) Remove the screws from the flange of the
side opposite the coil terminals. Turn the
brake upside down and place it on two
spacers of 50 mm located outside the
centering flange. Using a manual press,
apply the force necessary to disassemble
the internal rotor from the support bearing
on the axis of the internal rotor.
Alternatively, use a rubber mallet.
However, the use of an aluminum pin /
shaft is recommended. Remove the flange from the rotor. Then remove all traces of
residual dust from the flange, rotor and internal brake body. It is recommended to
carefully degrease and dry each internal part of the brake with alcohol or dry solvent
using rubber gloves. Reposition the brake on the shims with the open side facing
upwards, avoiding any interference with the coil terminals so as not to damage them.
2) Pour half of the magnetic powder
inside the brake, trying to distribute it
evenly as close as possible to the walls
along the entire internal diameter.
Then insert the rotor into the bearing
in its seat by applying the necessary
force by means of a manual press or by
means of a hammer with rubber stops,
taking care to interpose on an
aluminum pin to avoid damaging the
rotor hole.