AT T E N T I O N !
The chain supplied together with this JDN
hoist is matched to the chain sprocket
according to strict tolerances. In order to
ensure optimum function of the chain and in
order to prevent hazards, only genuine JDN
chains must be installed.
Align the new chain and check the correct number
of chain links. The chain must have an odd number of
chain links (feature: same position of end links). Allow
chain to run into the hoist using the insertion aid
1)
1
.
The welds
2
must face outwards (see illustration).
Installation of the load sleeve, clamp, buffers and
buffer discs is performed as per the description in the
section
Replacing load hook including load sleeve
and buffer,
page 39.
The replacement of the chain with a new one must
be entered into the inspection log.
1)
Art.-No. see spare parts list
In most types of application, a chain box makes a sig-
nificant contribution to operational safety. Only use
original JDN chain boxes on JDN Air Hoists.
Constructions from other sources may represent a high
safety risk. Rust on the chains increases the chance
that the chain may form large piles in the box
and is therefore not permissible.
Depending on the ratio of the size of the hoist (without
running gear) and the chain box, the chain box may
have to be stabilised by the customer due to an accept-
able vertical hoist position. This is facilitated by a sus-
pension point on the rear of the box. We will be happy
to answer any questions on this matter. Modifications
may only be made to the chain box on agreement with
J.D. Neuhaus GmbH & Co. KG.
The chain must only enter the container via the chain
drive. If it falls out of the container, e.g. during trans-
portation, it must be run out completely on the load
hook side and then run back into the container via the
chain drive, in the air hoist operating position.
DA N G E R !
If JDN Air Hoists are operated without a
chain box, it must be ensured that the
idle chain (unloaded chain end) running up
or down at the chain sprocket, does not pre-
sent a hazard, e.g. due to catching, impact-
ing or falling.Danger due to falling chain can
also arise if, when lifting, the idle chain is
first deposited on a load with a large surface
or other surfaces above the traffic level, then
slides off and drops.
AT T E N T I O N !
Do not exceed the permissible filling
capacity. Danger of chain falling.
DA N G E R !
When operated with a chain box, lubrication
of the chain is particularly important in
order to prevent it from piling up and falling
out. Do not install longer chains when
changing chains.
AT T E N T I O N !
Loads must not be moved against the chain
box when
lifting loads. If necessary, attach a clamp
with buffer and buffer discs to the chain.
The clamp with buffer and buffer discs must
be attached above the load hook so that it
functions as a preliminary end position lim-
iter (see section
Replacing chain and chain
sprocket,
page 40).
AT T E N T I O N !
Never allow the chain to pile up
in the chain box.
After installing the chain box, lower the load hook
to the bottom position once.
Then activate lifting movement and run the
complete chain into the chain box once.
If the hoist has been transported with the chain in the
chain box, the chain box must be emptied manually
before initial operation (if necessary, remove the chain
box from the hoist). The entire chain must then be
allowed to run to the load side and, subsequently, be
driven back into the chain box. The hoist must be kept
in a hanging position during this procedure. This
process will ensure that the chain does not lock when
loads are being lowered.
C H A I N B OX
powered by air !
M A I N T E N A NC E
Page 41
Summary of Contents for JDN mini 1000
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