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

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The welds on the upright chain links must face out-
wards when running over the chain sprockets. For this
reason, the welds of the chain links which lie flat in
the drive sprocket must face towards the gearbox in
the case of treble and quadruple chain hoists. If the
first link of the new chain is not correctly positioned,
it must be removed.
Note: It is possible that the first chain link of the other
chain end is correctly positioned. Switch the hoist to
the ”lift” rotational direction. The new chain will now
run into the hoist while the
왘
old chain is simultaneously run out on the idle
chain side.
Run the chain until the join between the old and new
chain has run sufficiently (approx. 1 m) out of the
centre section on the idle chain side.
왘
Detach the connection between the old and new
chains.
왘
Install the clamp (at the 10th chain link), buffer and
buffer discs on the idle chain section of the new chain.
Only in the case of operation without chain box, align
the idle chain and attach to the fastening point on the
hoist - for dual and quadruple chain hoists, except for
EH 20, the bottom block chain is also attached here
later. (See also
Removing and installing load sleeve,
bottom block, clamp and buffer section.)
왘
Attach the chain box if necessary.
왘
Switch the hoist in the ”lift” rotational direction
until the as yet free end of the
aligned load chain
is the correct length for attaching the chain link,
_
for single chain hoists in the load sleeve after the
buffer and buffer discs have been pushed on,
_ for dual and quadruple chain hoists at the
fastening point on the hoist body and
_ for triple chain hoists at the fastening point of
the bottom block (see also Removing and
installing load sleeve, bottom block, clamp and
buffer
section).
Note : If the chain link of the load chain is positioned
incorrectly, it must be removed, the following chain link
will be positioned correctly.
Note: If the chain jams in the hoist and can no longer
be run out, the gearbox must be dismantled. The gear-
box retaining bolts must be removed for this purpose,
and the end chain link pin must be pulled out. The
chain wiper must then be removed. The gearbox can
now be pulled approx. 15 mm from the centre section.
In this position, the safety ring, item 440 (gearbox
3 TI/6 TI), item 500 (gearbox 10 TI/16 TI/20 TI/EH 10/
EH 16/EH 20) (see E-list, gearbox) must be removed in
the vicinity of one of the exhaust air guides. The gear-
box housing can then be removed and the gearbox can
be dismantled down to the sprocket wheel.
When removing the old chain, assembly chains (1) are
brought into position on all the deflection sprockets by
means of open chain links (see also
Removing and
installing load sleeve, bottom block, clamp and
buffer
section and section Removing and installing
chain section).
Following replacement of the chain sprocket (see spare
parts list) an assembly chain
(2) is run carefully – with
low air pressure – over the drive sprocket.
Fasten the new chain to the assembly chain on the
drive sprocket by means of one or two open links
(3)
on the idle chain side. The first chain link (4) must run
upright over the drive sprocket with the weld facing
outwards. The welds of the chain links which lie flat in
the drive sprocket
(5) must face towards the gearbox
in the case of treble and quadruple chain hoists. (See
illustration.)
Switch the hoist to the ”lower” rotational direction and
detach the assembly chain from the chain after it comes
out of the centre section.
Depending on the number of chains of hoist and after
alignment, the new chain is pulled over the deflection
sprocket of the bottom block and if necessary over the
deflection sprocket of the centre section by means of
further assembly chains.
Note: If the chain link on the idle chain side is posi-
tioned incorrectly, it must be removed, the following
chain link will be positioned correctly.
R E P L AC I N G C H A I N A N D
C H A I N S P R O C K E T
powered by air !
M A I N T E N A N C E
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