lifted to ensure maxi-
mum possible contact
between the bag and
load and to prevent the
bag from slipping.
•
First inflate the lower
bag as a foundation,
then carefully inflate the
upper bag.
Never start
inflating the upper
bag before the lower
bag is fully inflated.
Lower in reverse order:
first deflate the upper
bag then the lower bag.
Never deflate the
lower bag first or at
the same time as the
upper bag.
•
Try to avoid using the
Mini-Lifting Bags on
thin, unreinforced metal
surfaces. These could
buckle during inflation of
the bag since 8 bar
(116 psi) working
pressure corresponds
to a pressure of 8 kg
per cm
2
(17.6 lbs per
sq.ft) on the base and
the load.
Lifting circular loads:
•
Position two bags,
preferably of the same
size, on the sides of the
load and slowly inflate.
25
Reducing adaptors and air
pumps are available from
manufacturers.
If the maximum pressure
from the compressed-air
supply exceeds 10 bar
(146 psi) a pressure
reducer must be used and
the pressure reduced to 10
bar (146 psi).
Practical tips
Examples of safe and
efficient uses of the
Vetter Mini Lifting Bag 8
bar (116 psi) and Super
Mini-Lifting Bag 8 bar
(116 psi).
•
The space between the
bag and the load to be
lifted should be reduced
wherever possible with
a suitable substructure
so that no lifting power
and lifting height is lost.
A substructure can, for
example, be made
using beams, though
the surface should be at
least as large as the
bag.
•
Mini-Lifting Bags should
be positioned com-
pletely or at least with
75% of their surface are
beneath the load to be
Warning
The bags may slip
out from beneath
the load if this has
a small diameter
and thus a steep
angle of incidence.
Changing wheels:
•
Place bag in front of the
flat tyre, drive wheel
onto the centre of the
bag. Secure vehicle
against rolling away.
Insert prop under axle
after raising, though
never work under a
raised load, use rods if
necessary.
Lifting rail vehicles:
•
Insert bag below load,
enlarge contact area if
necessary (e.g. on the
axles). Secure load
against slipping . Slowly
inflate bag.
Forcing window bars
apart:
•
To rescue trapped
persons or to help the
fire brigade gain
entrance to fight fires.
Insert bags between
bars or between the
bars and the wall and
slowly inflate.
