Elmo Rietschle V-VCB 20/25 - Manual (Page 13)

13 www.gd-elmorietschle.com © Gardner Denver Schopfheim GmbH, Gardner Denver Deutschland GmbH |
Bauj./Nr. 09
S1 1,85 / 2,20 kW
Typ VC 75 (20)
0,5 mbar (abs.)
2847746
70 / 84 m³/h
EN 60034
1430 / 1720 min -1
1026502067
3~ Mot.
Set up and operation
6
1
7 8 9 10
3 4 5 2
4.1.1 Data plate
Fig. 3 Data plate (example)
4.2 Description
The V-VCB has a fi ne micro fi lter on the suction side and on the outlet side an oil and oil mist separator to
return the oil to the oil circulation system. A fan between the pump housing and the motor provides intensive
air cooling. The fan is located in a fan cover that guards against it being touched.
An integral non-return valve prevents the evacuated system from being ventilated after the pump has stopped.
If the machine has been idle for more than two minutes the connected pipe should be ventilated to atmospheric
pressure.
A gas ballast valve ((U)
➝ version (07)) prevents water vapour condensation from getting into the inside of the
pump when it is sucking in small amounts of steam and the pump is at operating temperature.The pump is
driven by a standard fl anged single-phase or three-phase motor using a coupling.
4.3 Areas of application
These oil-fl ooded rotary vane vacuum pumps V-VCB 20 and V-VCB 25 are suitable h for producing vacu-
ums. The suction power with unrestricted suction is 20 and 22.5 m
3 /h at 50 Hz. Data sheet D 159.
These types are suitable for the evacuation of closed systems or for a continuous vacuum within the follow-
ing intake pressure ranges:
50 Hz
➝ 2 - 200 mbars (abs.) • 60 Hz➝ 2 - 150 mbars (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 pumping capacity of the vacuum pump.
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 infl uences, (e.g. by a
protective roof).
1 Type/ Size (mechanical version)
2 Year of construction
3 Motor design
4 Serial number
5 Item no.
6 Final pressure (abs.)
7 Pumping capacity 50 Hz / 60 Hz
8 Speed 50 Hz / 60 Hz
9 Motor output 50 Hz / 60 Hz
10 Operating mode