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 O VA L
The hoist must first be unloaded and disconnected from
the main air supply.
Note: The following operations can be performed from
the nameplate side after the motor has been removed.
Checking vane wear, replacing the vanes with starting
aids if necessary.
Checking brake wear, replacing the brake piston if
necessary.
Renewing the motor lubrication.
The replacement of the centre section halves with brake
lining is described under a separate item.
Unscrew 1 the nameplate.
Remove the motor cover bolts 2 and detach the motor
cover 3 (when the cover bolts are removed, the brake
springs 4 are fully released).
Remove the brake springs.
Remove the brake piston 5 from the internal cylinder
integrated in the motor housing.
Pull out the rotor 6 , removing the vanes 7 and starting
aids 8 .
Checking vane wear:
(See Fig. Checking vane wear, page 51). When the vanes
are worn, the motor power and consequently the lifting
performance of the JDN Air Hoist are reduced. Replacing
the vanes together with the starting aids.
Checking braking surfaces of the brake piston and
the centre section half with brake lining for wear
and damage:
The circular wear pattern in the braking surfaces must
not be deeper than 0.2 mm (also see illustration on
page 51). 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
pressure must be checked with the device switched on
(the brake drags in the event of insufficient
pressure).
M O T O R I N S TA L L AT I O N / C H E C K I N G
B R A K E L I N I N G S A N D
VA N E S / M O T O R L U B R I C AT I O N
powered by air !
M A I N T E N A NC E
Page 50
Replacing brake discs, brake piston and vanes /Motor installation
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