Vetter Ultra Flat Bags 8 bar (116 psi) - Manual (Page 12)

Vetter Ultra Flat Bags 8.0 bar
Page 11/16
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
Ultra Flat Bags are subject, the same as other rubber products, to
natural aging. The first sign of material aging is the loss of flexibi-
lity, this is especially seen in the formation of „age cracks“. If the-
se cracks propagate so far along the upper layer so that the sup-
porting cord layer (ARAMIDE) is no longer fully insulated then this
can quickly limit the tear resistance of the bag wall. This can cause
wall tearing and thus lead of bursting. The experiences over the
past decade have clearly shown that the failure rate in general for
rubber products considerably increases with application periods
exceeding 15 years. Therefore Ultra Flat Bags should be replaced
after 15 to 18 years of use at the latest. The danger for operational
services using over-aged Ultra Flat Bags must never be under-esti-
mated, alone due to the consideration aspect. Although at pre-
sent there is no regulation about the time limit for the maximum
period of use, the responsibility for this lies wholy and soly with
the user, resp. the person who has been commissioned by him to
carry out testing.
4.5 Care, maintenance and storage
The lifting bag equipment is to be cleaned after each operation.
Cleaning is normally carried out with warm water and a detergent.
Cleaning must never be carried out with
a chemical cleaning agent and never
with high-pressure hot water devices.
Drying is made at normal room temperature. A bag is to be imme-
diately discarded if, during inspection, any sign of damage is esta-
blished (refer to Page 6). Repair is not possible. If needed, compo-
nents 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 tests. 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 Mini-Lifting Bags.