Vetter Lifting bags 1 bar (14.5 psi) Test Equipment - Manual (Page 21)

Page 20/28
3. Function test
Caution! Perform only if the visual inspection in Point 2 and the test of the equip-
ment did not result in any complaints.
3.1
Connect pressure regulator to the compressed-air bottle.
Close the Shut-off valve on the pressure reducer.
Open the compressed-air bottle valve.
Yes No
3.1.1 Primary pressure manometer indicates (pressure in the
compressed-air bottle)
3.1.2 Back pressure manometer indicates (possibly increase
pressure on the control knob)
3.1.3 Pressure can be regulated across the entire adjustment
range
3.1.4 Safety valve remains leakproof at the set maximum
pressure.
3.1.5 Shut-off valve on the pressure-reducer outlet seals tight
3.1.6 At a set pressure of approx. 5 bar, the pressure does not
increase significantly within 5 min.
Connect the pressure reducer to the controller with an air
hose
Open the pressure reducer shut-off valve. Set the pressure
to approx. 10 bar.
3.2 Air hose and inlet coupling are leakproof
Connect filling hose to the controller. Alternately connect
inflation hoses at the other end with the VETTER Test
manometer. Carefully and slowly open the ball valve or the
piston valve.
3.3
Both couplings (controller and test manometer) can
be coupled without difficulty.
3.3.1
When opening the blocking valve/piston slide valve, the
manometer on the controller indicates the same pressu-
re as that indicated on the test manometer.
3.3.2 Both couplings are sealed.
3.3.3 Safety valve opens completely at +/- 10 %
3.3.4 After closing the ball valve/piston valve, the safety valve
closes within the 10 % tolerance.
3.4
Connect the bag to the inflation hose on the controller in
the open air and inflate to approximately 4 bar.
3.4.1 Bag is free of atypical bulges.
3.4.2 Bag is free of punctures, cuts, tears and any other forms
of damage.
Increase the internal pressure of the bag to the maximum
operating pressure.
Caution! Please observe the safety precautions (ear
defenders/ safety glasses).
3.4.3 Bag is free of atypical bulges.
3.4.4 The pressure drop must be less than 10 % after 3 minu-
tes.