13
Installation
5.5 Filling up the operating fluid
The type and amount of operating fluid should be visible on the pump's rating
plate for every rotary vane pump.
The delivery consignment for the
standard pump
contains suffient operating flu-
id for one filling. Pumps for special applications (e.g. for pumping corrosive gases)
can be operated with other operating fluids. These must be defined in accordance
with Pfeiffer Vacuum specifications before initial assembly and ordered separately.
Permissible operating fluids
• P3 (Standard operating fluid)
• F5 (Operating fluid for corrosive gas versions)
• D1 (for special applications and higher operating temperature)
– Final pressure of measurement, depending on the type of gas: < 5
·
10
-2
mbar
Filling up the
operating fluid
Î
Unscrew operating fluid filler screw.
Î
Fill up operating fluid.
– Correct filling level during operations: Within the markings at the sightglass
frame.
Fig. 9: Filling up the operating fluid
Î
Screw in operating fluid filler screw 140.
Î
Check operating fluid level only when the pump is warm and running; close
– vacuum flange and gas ballast valve to do so.
– Check operating fluid daily in non-stop operation, otherwise whenever the
pump is switched on. Refilling is possible when the pump is in final vacuum
operation.
NOTE
Guarantees relating to attainment of final pressures and trouble free functioning
of the pump apply only providing one of the permissible operating fluids is used.
max.
min.
WARNING
Toxic vapours!
Danger of poisoning when igniting and heating synthetic operating fluids (e.g. F4/F5)
above 300°C.
Î
Observe the application instructions of the operating fluid manufacturer.
Î
Do not allow operating fluid to make contact with tobacco products; observe safety
precautions when handling chemicals.
