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

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The overload protection can also be activated when
moving at full unloaded speed against a load to be
lifted, even when it is below the load size set. We
therefore recommend tensioning the slack chain before
lifting the load.
A D J U S T I N G O V E R L OA D P R O T E C T I O N
The adjustment method described here is based on the
attachment of test loads.
DA N G E R !
If the overload protection is set too high,
impermissibly high stresses may arise if a
load exceeding the permissible load carrying
capacity is attached.
Unload the hoist.
Detach the gearbox cover 1 from the gearbox in
order to gain access to the threaded pins 2 with lock
nuts 3 located behind it.
CORRECTING THE SET LIMIT VALUE
Loosen the lock nuts. It must be ensured that the
threaded pins
are not turned.
During each readjustment, adjust the threaded pins
to the same degree in order to adjust the disc springs
evenly: turning clockwise – limit value is increased,
turning anti-clockwise – limit value is reduced.
Secure threaded pins with the lock nuts. Do not turn
the threaded pins any more as the setting will be
altered.
Check the limit value for correct setting.
Install the gearbox cover.
R E S E T T I N G T H E L I M I T VA L U E
Loosen the lock nuts. Screw out the threaded pins –
anti-clockwise – until the disc springs
4 are
completely free of pre-tension.
Then loosely screw in the threaded pins by hand –
clockwise – to the stop, unscrew the lock nuts
sufficiently far back beforehand.
The limit value for reaching at least 110 % of the
load-carrying capacity is set at approx. 2.5 turns.
Screw in the three threaded pins successively in
small steps by approx.
1/2
turn. With this pre-
adjustment after re-assembly, first let the safety
clutch take effect for approx. 5 seconds (load hook
on the upper end position with the motor running).
Then let the load hook run for approx. 10 seconds
without a load so that the outlet air cools the clutch
down.
Secure threaded pins with the lock nuts. Hold the
threaded pins tightly in the process.
Check the limit value for correct setting, correct if
necessary.
Install the gearbox cover.
The adjusting and inspection result arrived at by
qualified personnel must be entered in the lifting
gear inspection log (limit value: see
Overload
protection , page 36).
Gearbox 1.6 t
powered by air !
Page 60
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