P RO D U C T I N F O R M AT I O N
Page 14
JDN Air Hoists are designed for lifting and
lowering loads within the specified load-carrying capa-
cities, with a vertically-arranged chain. They are also
suitable for pulling loads horizontally. Under certain
conditions, the lifting of personnel-carrying equipment
is also permitted.
In combination with trolleys, JDN Air Hoists are also
suitable for the floorless horizontal movement of loads.
Any other use or use outside these stipulations is
deemed to be abnormal. Oblique pulling, see section
Operation,
page 27. J.D. NEUHAUS GMBH & CO. KG
cannot be held liable for any resulting damage.
The entire risk is borne by the user (see also section
Rules for safe operation of hoists,
page 27).
Intended use also includes observance of the operation
manual and compliance with the inspection and mainte-
nance conditions.
JDN Air Hoists are extremely robust and require little
maintenance. They are suitable for use in explosion-
hazardous areas, as well as in areas with increased
concentrations of soot and dust, high humidity and at
temperatures of -20°C up to approx. +70°C.
The thermal endurance of chains and hooks is +150°C.
C AU T I O N !
When touching metallic hand controls which
are colder than 0°C, freezing of the skin can
occur within a few seconds and for tempera-
tures above 43°C, burns can occur.
For stationary outdoor operation, hoists must be protec-
ted against weathering and the maintenance intervals
must be shortened.
Depending upon the version, JDN Air Hoists must be
operated at a system pressure of 4 bar or 6 bar. If the
system pressure is too low, important functions of the
hoist will be impaired:
The brake will drag and is thus subject to a high
degree of wear.
DA N G E R !
Warning against excessive system pressures
Operating with excessive system pressures
results in danger due to overloading.
Therefore, the pressure must be limited to
that specified on the nameplate.
JDN Air Hoists must be operated with a sufficiently
clean and dry air supply. The air supply must fulfil the
following quality requirements:
Particle size less than 40 µm
Particle density less than 5 mg/m
3
In order to provide adequate compressed air quality,
operation with a service unit is recommended. Usually,
an oiler is not required in the service unit, as the motor
is provided with internal permanent lubrication.
Pressure dew point at least 10°C below the lowest
expected ambient temperature
Do not operate JDN Air Hoists with other gases.
With moist air and ambient temperatures at or below
0°C, there is a danger of icing in the motor.
Icing can be prevented by:
the use of an upstream air dryer or using a service
unit with oiler,
adding anti-icing agent to the lubrication oil
(depending upon moisture content of compressed air)
or using compressed air oil (Art. no. 11900) with
anti-icing agent for relevant temperatures.
In case your JDN Air Hoist is operated in combination
with a trolley, please read also the trolley operation
manual and the relevant accident-prevention regulations
for operation with trolleys.
O P E R AT I N G C O N D I T I O N S
I N T E N D E D U S E
