VWR Rotary Vane Pump ver 1.3 23.11.2020
The oil transports the polluted particles and corrosive media and thus effects continuous cleaning of the
internal surfaces.
Oil for Drawing off oxygen
For drawing off oxygen containing mixtures or pure oxygen the following must be taken into consideration:
-
Mineral oils are flammable and not suitable for oxygen contents above 30%.
-
The more they oxidise, the quicker they loose their properties.
-
For this reason they only can be used up to an oxygen percentage of maximum 30 per cent in the
medium to be delivered.
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For higher oxygen contents synthetic oils have to be used, i.e., LABOVAC 13 (PFPE).
In order to prevent any accumulation of oxygen in the discharge space, neutral gas such as nitrogen may be
let in through a special inlet assembly. The percentage of oxygen is being reduced. The added amount of
gas should be 5 times as much as the percentage of oxygen.
WARNING!
There is a risk of explosion when pumping oxygen at a concentration above 30 percent.
WARNING!
Pump should be not used for oxygen service! Oxygen at atmospheric pressure is
exceptionally dangerous
!
4.70 Storage
The pumps are to be stored in a low-dust, interior room within the temperature range from + 5 to + 40 °C
and at a relative air humidity < 90%. Leave the protective elements on the suction and pressure ports.
Another equally good protection may be used. If the pump oil is contaminated and the pump is going to be
stored for a prolonged period, the oil should be changed before the pump is stored. Even if a pump is stored
for a long period with oil initially in good condition, check the oil when the pump is restarted, and change the
oil if necessary.
