J. D. NEUHAUS Profi 025Ti, Руководство по эксплуатации

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The motor and brake functions are achieved in part by
means of shared components. The braking action is applied
at the lateral surfaces of the rotor. The rotor is pressed
via spring force from the cover-side of the motor against
a second braking surface located on the opposite side by
means of a piston on which braking material is bonded.
R E M OVAL
Proceed as follows when removing the motor with
the brake:
왘
Unload the hoist and disconnect it from the main
air supply.
왘
Detach the control valve from the motor (in order
to permit removal of the motor retaining bolts).
왘
Detach the motor from the hoist.
왘
Remove the motor cover bolts 1 and remove the
motor cover 2 with the nameplate 3 . (When the
cover bolts are removed, brake spring tension 4 is
fully released).
왘
Remove the springs.
왘
Remove the brake piston 5 from the internal cylinder
integrated in the motor housing.
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Pull out the rotor 6 , removing the vanes 7 and
starting aids 8 .
Note: If you only wish to check for vane wear or
replace the vanes with the starting aids, please
continue with the section ”Checking for vane wear”.
왘
Remove the cover bolts 9 and remove the cover with
the brake lining 10 (brake disc).
왘
Check the braking surfaces of the brake piston and
the cover with the brake lining for wear and damage,
replace if necessary. The circular wear pattern in the
braking surfaces must not be deeper than 0.2 mm.
The extremely low-wear braking material will not
reach the wear limit of 0.2 mm within the design-
dependent service life of the hoist, under intended
use. Should the wear limit be reached prematurely,
the actual compressed air pressure must be checked
with the device switched on (the brake drags in the
event of insufficient pressure).
왘
Checking vane wear (see illustration Checking vane
wear, page 49). When the air motor vanes are worn,
the motor power and consequently the lifting per-
formance of the JDN Air Hoist are reduced. Replacing
the vanes together with the starting aids.
R E P L AC I N G B R A K E D I S C , B R A K E P I S TO N
A N D VA N E S / M OTO R I N S TAL L AT I O N /
M OTO R L U B R I C AT I O N
powered by air !
M A I N T E N A N C E
Page 48
Replacing brake discs, brake piston and vanes /Motor installation
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