f) Press patch firmly onto
prepared area of the
bag and rub.
g) Leave bag at least 48
hours in deflated state.
The bag should be tested
by a safety expert after the
repair.
Recurrent tests
Tests for lifting bags are
based on the Pressure
Vessel Legislation and DIN
14152 Part 1*. The tests
contained herein are to be
carried out as specified.
Lifting bags with a maxi-
mum working pressure of
0.5 bar / 7.25 psi do not
have to be tested by a
safety expert but can be
tested by a qualified tester.
Vetter Lifting Bags 0.5 bar /
7.25 psi are subjected to a
constructional and pres-
sure test as well as an
approval test in accordance
with § 9 of the Pressure
Vessel Legislation by a
work’s tester.
If this ices up because of a
excess atmospheric
humidity in connection with
low temperatures use a
normal defroster (such as
is used for car locks).
Maintenance and
servicing
Minor damage such as
cracks, cuts or punctures
can be repaired by the user
with the enclosed repair kit
as follows:
a) Select a patch which is
approx. 5 cm larger
than the damage on all
sides.
b) Mark patch on bag.
c) Roughen up the surface
of the bag and one side
of the patch.
d) Apply a thin layer of
special adhesive on the
roughened up surface
of the bag and the
patch.
e) Leave special adhesive
approx. 20 minutes to
dry until no longer tacky.
Performance of tests
Tests on delivery by user
During this test in accord-
ance with DIN 14 152 Part
1, Item 5.2
*
the device
should be checked by the
user’s qualified tester to
ensure that all parts have
been delivered and that
none are damaged. The
bags are to be inflated up to
0.2 times the permissible
working pressure, i.e. to 0.1
bar / 1.5 psi. The qualified
tester should then perform
a visual check.
Recurrent tests
The lifting bag system
should be checked after
every use, though at the
latest after one year, to
ensure that all parts are
complete and none are
damaged. If all parts are
complete and present the
lifting bag should be in-
flated to 0.5 times the
maximum working pres-
sure of 0.5 bar / 7.25 psi,
i.e. 0.25 bar / 4 psi, and
then washed with luke-
warm soapy water. Check
for cracks, wear, cuts or
19
*
Pressure Vessel Legislation and DIN 14152 Part 1 are only valid in Germany.
