Operating and maintenance instructions
EN
4
LI 770.03
2. Product specifications
2.1 Pump description
The pumps series PVL 25 - PVL 35 have a nominal capacity (50 Hz) of 25 and 35 m
3
/h
respectively.
They are lubricated, with oil recirculation system, rotary vane vacuum pumps.The flanged
electric motor is coupled by means of an elastic coupling.
The cooling is made by means an air/oil cooler, cooled with a centrifugal fan.
At the inlet there is a mesh filter in order to protect the pump from solid parts having
diameter bigger than 1,5 mm.
Furthermore, an integrated no-return valve prevents the oil from coming back and the
return of air in the chamber to be pumped down during the stop phase.
In the tank there is a system of separation of oil smokes from discharge air (maximum
residual 2PPM/weight corresponding to 2.4 mg/m3 ).
The separated oil is recovered automatically by the pump.
A gas ballast valve, always on, prevents condensation inside the pump when pumping
down small quantity of vapour.
To Next Page
Loading...
