Vetter Mini Lifting bags 8 bar (116 psi) - Manual (Page 13)

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5. Trouble-shooting for faults
If the safety valve blows too early because of foreign body pe-
netration caught up inside then the blow-off valve is to be fully
opened on the head of safety valve by turning counter-clockwise
so that the compressed air can escape. If, due to this, the foreign
body is not removed then the upper part of the safety valve is to
be unscrewed when the safety valve is disassembled. To do this,
position the pipe wrench in the centre and unscrew by turning to
the left.
Carefully take out the valve ball and remove foreign body. Firmly
screw on the upper part of the valve again, assemble the safety
valve and check operation. The set pressure must not be changed.
Should the sealing or sealing plate on
the upper part of the valve be removed
then correct operation can no longer
be guaranteed.
The safety valve is to be exchanged.
6. Repetitive tests
Lifting bag systems are to be subjected to repetitive tests accor-
ding to DIN EN 13731 and national regulations (e.g. GUV-G 9102).
9 Testing on acceptance
Testing for completeness by the person/people delegated by
the user.
Visual check and operation test by a trained person accor-
ding to the operation manual.
9 Visual check and operation test after each application/use by
the user.
This test is to be documented.
9 At least once every year the lifting bag system is to be given a
visual check and operation test by a trained person according
DIN EN 13731 and national regulations.
This test is to be documented.
9 At least every 5 years or if there is any doubt about the safety
or reliability, the lifting bag system is to be given a pressure
test by the manufacturer or a trained person with further trai-
ning of the manufacturer, according to DIN EN 13731 and na-
tional regulations.
The user is responsible for the correct and professional execution
of the repetitive tests!
7.