Vetter S.Tec Lifting bags 10 bar (145 psi) - Manual (Page 12)

Vetter S.Tec Bags 10 bar
Page 11/18
4.3 Dismantling of the lifting bag system
after use
Dismantling of the lifting bag system is carried out after ensuring
the lifted load and complete deflation of the lifting bag system,
including dismantling of all accessory parts in the reverse order.
4.4 Limit for the period of use
S.Tec Bags are subject to natural aging the same as any other rub-
ber products. The aging of the material is initially indicated by the
loss of flexibility which especially becomes aparent with the ap-
pearance of so-called aging cracks. If these cracks propagate in
the cover material so that the ARAMIDE reinforcement is no lon-
ger protected by the cover layer then this can lead to a crack net-
works forming on the surface and thus cause bursting of the bag.
The experiences gained in the last decade have clearly shown that
the general failure rate with rubber products considerably increa-
ses from a period exceeding 15 years. Therefore S.Tec Bags should
be replaced after 15 years, 18 years is the maximum. The danger
for rescue services when using aged S.Tec Bags should never be
underestimated for welfare reasons. It should be stressed that alt-
hough there is currently no regulation about the maximum time
limit, the responsibility rests fairly and squarely with the user and
the inspector commissioned by him.
4.5 Care, maintenance and storage
The lifting bag equipment is to be cleaned after every operation.
Cleaning is normally made with warm water and a soap solution.
Cleaning must never be carried out with
chemicals and high-pressure hot water devices.
Drying is to be made at normal room temperature.
A bag is to be immediately discarded if, during inspection, any
sign of damage is established (refer to Page 6). Repair is not pos-
sible. If needed, components such as manometers, safety valves
and piston valves can be exchanged. Hose couplings and nipples
can also be exchanged. After necessary repair, the equipment is to
be checked according to the repetitive testes. This special test is
also to be documented.
DIN 7716 is to be observed for long-term storage.
The VETTER Guarantee is 36 months for S.Tec Bags.