placement of the lifting
bags, Vetter Mini Lifting
Bags can usually be used
to quickly create the
necessary space.
Troubleshooting
If a safety valve opens
prematurely because a
foreign body has pene-
trated the system, open the
discharge device at the
head of the safety valve
fully by turning anticlock-
wise so that compressed-
air can escape. If this does
not remove the foreign
body the top part of the
valve must be unscrewed.
Unscrew in an anticlock-
wise direction using a pipe
wrench. Carefully remove
the valve cone and remove
the foreign body in front of
the sealing plate. Screw the
top part of the valve back
on tight and check for
perfect operation. The pre-
set pressure may not be
changed. If the lead or
leaded plate on the top part
of the valve is removed a
safe function can no longer
be guaranteed - return the
device to the manufacturer.
•
Truck tyre valve (19).
For inflation with a
normal hand or foot
pump.
•
Truck tyre valve con-
nector (20). To take air
from the spare tyre.
•
Building site com-
pressor (21).
•
Hand (22) or foot (23)
pump with manometer.
Reducing adaptors and air
pumps are available from
the manufacturer.
If the maximum pressure
from the compressed-air
supply exceeds 4 bar /
58 psi a pressure reducer
must be used and the
pressure reduced to
approx. 2 bar / 29 psi.
Practical tips
You should normally use at
least two bags of the same
size and design. Place
each bag as close as
possible to the end of the
load.
Pull bag under the load with
a working line or lower
between loads to be
separated. On account of
the low bearing pressure
[maximum 0.5 kg / cm
2
(7.25 psi) or 1.0 kg / cm
2
(14.5 psi)] substructures
are rarely required, even on
soft bases.
Secure the load against
slipping during lifting by
bracing or other suitable
measures. Place Lifting
Bags completely under
load wherever possible
(though with at least 75% of
their surface). The lower the
contact area between the
lifting bag and load, the
lower the lifting power.
Place the side wall material
between the top and
bottom of the bag before
inserting under the load. If
the insertion height or area
is inadequate for a proper
18
22
23
Vetter Low Pressure Lifting Bags 0.5 bar / 7.25 psi
Vetter Medium Pressure Lifting Bags 1 bar / 14.5 psi
Vetter Low Pressure Bags 0.5 bar / 7.25 psi
