MANUAL VIAVAC-CB4 / 4.1 ( General section ) Art. nr. 50504 EN (01-07-2017)
__________________________________________________________________________________________
6
___________________________________________________________________________________
VIAVAC vacuum lifting BV T. + 31 348 449 660 E. [email protected] I. www.viavac.com
Managing director
A 3
Definitions
Operator
Person or persons who operate and utilizes the vacuum lifter.
Lifting device
Lifting crane, overhead crane, forklift truck or any other, well or not into a machine integrated
lifting arrangement, where the vacuum lifter is suspended on and lifting tasks are being
executed.
Load
The object being transported and/or handled by the vacuum lifter.
Working load
Limit
The maximum weight of the load which can be transported safely with the vacuum lifter
Suction
By actuating a valve, sucking the load fixed to the suction pad.
Aerating
By actuating a valve, releasing the load by enabling air flowing to the suction pad
Maintenance
expert
Expert who is responsible for inspection, maintenance and repair of the vacuum lifting device.
Load ratio
Ratio between the maximum calculated load which can be lifted with the device and the safe
working load which is indicated on the device.
Testing ratio
Ratio between the load, used for the static test of the vacuum lifter and the safe working load
indicated on the device
Static
test
Test where the vacuum lifter should withstand a static force equivalent to 2x working load
limit without permanent deformation and after removal of the force, there shall be no visible
defects.
Holding time
Test
With the suction pad in vertical position, a (non porous) load corresponding the working load
limit is lifted. After this, the main switch is switched off so the vacuum pump will not run
anymore. The vacuum lifter should be able to hold the load for a prescribed time.
