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➨
Operate the pump briefly. Drain flushing oil and repeat
flushing procedure, if necessary, until all contamina
-
tions are flushed out.
➨
Remove the manometer (see above). Add fresh oil (at
first approx. 0.37 quarts (350 ml) only) through the oil
inlet port for the oil level to reach the ”min.” mark (10).
➨
Close the oil inlet port (8). Operate the pump with
closed inlet
for approx. 5-10 minutes.
➨
Top off the oil (add approx. 0.11 quarts (100 ml)). As a
rule, it is not necessary to use the maximum quantity
of oil.
Do not overfill!
➨
Screw in manometer with O-ring.
Note:
The oil degasses and foams at low pressures. This
is a welcome condition which helps to protect the pump
against corrosion and to prolong the working life of the oil.
The quantity, condition and quality of the pump oil have a
decisive effect on the pump’s performance and depend-
ability.
Important:
It may not be possible to reach the specified
ultimate vacuum if an oil other than
VACUUBRAND B-oil
is used. Similarly, failure to use the recommended oil may
impair cold-start performance and pump lubrication!
Notes on choosing the appropriate oil for the application
The
standard oil
for VACUUBRAND rotary vane pumps is the
B-oil
. This
is a mineral oil, which is used for the first filling of the pump.
The advantages of the B-oil are: Flat viscosity curve, low vapor pressure,
good chemical resistance, extended stability when pumping oxidants,
acid or basic vapors compared to conventional mineral oils, and good
skin compatibility.
Certain pumped media may attack the conventional oil in the pump. Spe-
cial oils can be used preventively. It is at the users’ responsibility to check
if the materials of the wetted parts are resistant against the pumped sub-
stances. This is also mandatory if special oils are used.
