J. D. NEUHAUS PROFI 3 Ti, Руководство по эксплуатации

Страница: 52 / 59

M A I N T E N A NC E
Page 52
The PROFI 3 TI, 6 TI, 10 TI and 16 TI hoists are equipped
loads exceeding the limit values set from being lifted.
The limit value is set so that loads of 125 % of the load
carrying capacity cannot be lifted. 110 % can be lifted
in order to perform the dynamic overload test.
AT T E N T I O N !
The safety clutch must only be engaged for a
short time in order to prevent unnecessary
wear and overheating of the drive.
When the safety clutch is activated, the hoist should be
unloaded by switching to a lowering movement.
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 LIMIT VALUE SET
Loosen the lock nuts. It must be ensured that the
threaded pins
are not turned.
During each readjustment, adjust each threaded pin
to the same degree in order to adjust the disc springs
evenly:
turn clockwise – limit value is increased,
turn anti-clockwise – limit value is decreased.
Secure threaded pins with the lock nuts.
Do not turn the threaded pins in the process, 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 com-
pletely free of pre-tension.
Then loosely screw in the threaded pins by hand –
clockwise – to the stop, screw the lock nuts suffi-
ciently far back beforehand.
The limit value for reaching at least 110 % of the
load-carrying capacity is set at approx. 2 turns.
Screw in the three threaded pins successively in small
steps by approx.
1/2
turn.
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.
Gearbox 3.2 t
O V E R L OA D P R O T E C T I O N
1
2
4
3