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Set up and operation
4.3 Areas of application
These oil-flooded rotary vane vacuum pumps V-VC 40, V-VC 50, V-VC 75, V-VC 100 and V-VC 150 are suit-
able for producing vacuums. The nominal suction capacity with free suction is 40, 50, 70, 100 and 150 m
3
/h
at 50 Hz. Data sheet D 231 / D 231-30 shows the dependency of the suction capacity on the intake pressure.
These types are suitable for the evacuation of closed systems or for a continuous vacuum within the follow-
ing intake pressure ranges:
Standard pump:
0.5 to 500 mbar (abs.)
Design „IV“:
< 100 mbar (abs.)
Design „XD“:
3.0 to 500 mbar (abs.)
If the machine is operated continuously outside these ranges there is the risk of oil leaking through the outlet
opening. When evacuating closed systems the volume to be evacuated must be no more than 2 % of the
nominal suction capacity of the vacuum pump.
For permanent operation of > 100 mbar (abs.) the next larger motor output must be used.
If the unit is switched on more frequently (at regular intervals of about 10 times an hour) or at
higher ambient temperatures and intake temperatures, the excess temperature limit of the motor
winding and the bearings may be exceeded.
Please contact the manufacturer should the unit be used under such conditions
If it is installed in the open air the unit must be protected from environmental influences, (e.g. by a
protective roof).
Summary of Contents for Elmo Rietschle V-VC 40
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