Page 28
O P E R AT I O N
JDN Air Hoists must not be used for the following appli-
cations, for example:
Critical areas of nuclear plants.
Over acid baths or other plants with
corrosive substances.
In areas in which organic acids are present.
To ensure the safety of personnel when using JDN
Air Hoists, it is essential that the following points
are observed:
Never touch a running chain.
Never allow persons to enter the area below the
suspended load.
Never attempt to remedy a fault with a load suspended
from the hoist.
Only use suitable and approved attaching aids; do not
jam the hook at the point of attachment.
Never use the hoist chain for attaching loads.
Before attaching, arrange the load exactly vertically
below the hoist. The chain must hang vertically
before lifting.
Ensure that the hook safety catch is closed.
Never allow loads to fall into the harness of the hoist.
Before lifting loads, ensure that the maximum per-
missible load is not exceeded. Attaching aids must be
included in the weight of the load.
If the chain is slack, do not take up the load at maxi-
mum speed.
When taking up and setting down, ensure stable
positioning of the load, to prevent accidents due to
tilting or falling loads.
Never drive against jammed loads.
When operating without a chain box, avoid hazards
due to idle chain (falling, catching, impacting), see
section
Operation without chain box,
page 17.
Only use original JDN chain boxes.
Only lift one load at a time; never several loads
simultaneously.
Never apply bending loads to chains.
Never lock the control elements of control devices.
In the case of stiff actuating elements, have the hoist
repaired.
In the case of power failure, secure the load and the
surrounding area, until the power is restored.
Do not join or repair hoist chains.
Replace deformed load hooks.
Repair damaged hook safety catches.
Repair stiff hook bearings.
Do not kink or pinch control hoses.
Have loosened bolted connections tightened by the
Repairs department.
Before removing compressed air hoses,
shut off the compressed air.
Do not exceed the permissible capacity of the
chain box.
Repair the hoist if the braking distance is excessive.
Check blocked chains for damage.
If a load is lifted using several air hoists, prevent
overloading due to incorrect weight distribution.
Select a safe operating location.
Ensure the correct system pressure.
Straighten twisted chains (defective bottom block)
Do not operate with damaged or worn or rusty chains.
Permissible operating temperature for chain and
hook: -20°C to +150°C,
other parts of device: -20°C to +70°C.
Never touch metallic hand controls which are colder
than 0°C or hotter than 43°C, without suitable
protective gloves.
Do not make modifications to the hoist.
Only use
original JDN spare parts.
J.D. NEUHAUS GMBH & CO. KG accepts no liability for
the use of non-original components and/or modifica-
tions by unauthorised persons.
Do not switch on multi-chain hoists if the bottom
block is supported.
DA N G E R !
For all air hoist applications, ensure that
the load hook can be lowered all the way to
the ground, in order to prevent a load being
moved to the lower limit position, without
reaching the ground.
Danger due to overloading!
