MANUAL VIAVAC-CB4 / 4.1 ( Expert section ) Art. nr. 50504 EN (01-07-2017)
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VIAVAC vacuum lifting BV T. + 31 348 449 660 E. info@viavac.com I. www.viavac.com
METHOD OF OPERATION:
Vacuum tightness Hereby the device must be put on a non porous sheet of glass, metal or plastic, after
which suction is applied and waited until the pump stops running.
Then the main switch is turned off and after waiting 1 minute it is then checked to
which extend the vacuum level has decreased.
The loss of vacuum may not amount to more than 10% per minute.
Vacuum indicator Hereby the device must be put on a non porous sheet of glass, metal or plastic, after
which suction is applied and waited until the pump stops running.
Compare the value indicated by the pointer of the vacuum indicator with the value
indicated by the digital vacuum switch (2).
Indication from the vacuum meter may not deviate more than 3% from the digital value.
Acoustic alarm Hereby the device must be put on a non porous sheet of glass, metal or plastic, after
which suction is applied and waited until the pump stops running.
By slowly opening the water drain valve (12), the system will be gradually aerated
and the vacuum level will decrease.
As soon as the vacuum level falls below the -0.60 bar the acoustic alarm should sound,
the volume thereof should amount to at least 85db at 1 meter of distance.
Control of the
vacuum pump Hereby the device must be put on a non porous sheet of glass, metal or plastic, after
which suction is applied and waited until the pump stops running.
By slowly opening the water drain valve (12), the system will be gradually be aerated
and the vacuum level will decrease.
As soon as the vacuum level falls below the -0.65 bar the vacuum pump must start.
After 10 seconds the vacuum pump must automatically stop, whereby the digital
vacuums switch must indicate a vacuum level of -0.70 bar or more.
Battery capacity First the battery is fully charged with a battery charger, after which the battery is
discharged with a certain amperage, by measuring the time needed for discharging,
The battery capacity is determined by multiplying time and amperage.
This needs to be 90% or more of the nominal battery capacity ( 55 AH).
Static test With the suction cup in a vertical position, a (non porous) load with a weight equal to
2 times the working load limit should be lifted.
The load should be held and after the removal of the load no visible permanent
deformation of the device.
Holding time test With the suction cup in a vertical position, a (non porous) load with a weight equal to
the working load limit should be lifted.
The main switch should be turned off so the vacuum pump will no longer run.
The load should be held for at least 5 minutes.
During the static test and the endurance test, the load should be lifted only a few millimeters
so that in case of an unsuspected release, this will not result in damage or personal injury.
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