VACUUBRAND RC 6 - Manual (Page 30)

page 30 of 59
this does not have a direct effect on the pumping speed
and on the ultimate vacuum attainable by the HYBRID
pump, it does have a considerable effect on the aging of
the oil and the HYBRID pump’s chemical resistance.
All bearings are encapsulated and are filled with long-life
lubricant. Under normal operating conditions, the drive
system is maintenance free. The valves and diaphragms
are wear parts. Aging of the oil of the rotary vane pump
necessitates oil changes.
Important notes regarding the use of gas bal-
last
Gas ballast is a continuous purge to keep the pump’s in-
terior as clean as possible and to reduce the possibility of
condensation inside the pump.
➨
Air and pumped media might react inside the pump or
at the outlet of the pump and form hazardous or explo-
sive mixtures, when you use air rather than inert gas
for the gas ballast. This constitutes a risk of significant
damage to equipment and/or facilities, a risk of per-
sonal injury or even loss of life.
+
Make sure that air/gas intake through the gas ballast
valve can never lead to hazardous, explosive or other-
wise dangerous mixtures. If in doubt, use inert gas.
To reduce condensation in the pump, do not pump vapor
before the pump has reached its operating temperature.
Open the gas ballast valve when pumping condensable
vapors.
NOTICE