2 | Product Description
6 | 32
Instruction Manual R5 RB_RC 0021 C_EN_en
Machine version
Operating time
RB 0021 C
The machine is suitable for intermittent operation only.
At the latest after 2 hours of continuous operation, the ma-
chine must be shut down for at least 15 minutes.
Not to be used for continuous operation especially
at rough
vacuum.
RB 0021 C - with oil return line
to the B-cover
The machine is suitable for continuous operation from 2 hPa
up to 200 hPa abs..
RC 0021 C – with oil return line
to inlet flange
The machine is suitable for continuous operation at rough
vacuum.
Note:
The non-return valve (NRV) shouldn't be used as a non-return or shut off valve for the System.
The non-return valve is only to protect the pump.
If the machine needs to be maintained after shutdown:
●
Provide an additional manual or automatic operated non-return valve in the suction line.
Permitted environmental conditions, see
25].
2.3
Start Controls
The machine comes without start controls. The control of the machine is to be provided in the
course of installation.
The machine can be equipped with a soft-starter.
2.4
Optional Accessories
2.4.1
Gas Ballast Valve
The gas ballast valve mixes the process gas with a limited quantity of ambient air to counteract the
condensation of vapor inside the vacuum pump.
The gas ballast valve has an influence on the ultimate pressure of the machine, see
2.4.2
Inlet Filter
The inlet filter protects the machine against dust and other solids in the process gas. The inlet filter
is available with a paper or polyester cartridge.
2.4.3
Filter pressure gauge
Use the filter pressure gauge for checking the degree of clogging of the exhaust filter.
