VACUUBRAND PC 3001 basic pro - Manual (Page 28)

page 28 of 54
Use and operation
Notes regarding the selection knob and the motor speed
Turning the knob to the left decreases the motor speed, turning the knob
to the right increases the motor speed.
Pumping at high motor speed increases the pumping speed of the
pump. Ensure sufficient cooling of the pump!
Pumping at low motor speed increases the lifetime of diaphragms and
valves!
The pump attains the best ultimate vacuum in the low speed range be-
tween approx. 600 and 1000 rpm.
Installing a pump in a vacuum system
➨
If dangerous or polluting fluids could be released at
the outlet, install an appropriate system to catch and
dispose of those fluids.
+
Connect a gas-tight exhaust line at the pump outlet if
necessary. Always vent exhaust gases appropriately
(e.g., into a fume hood).
+
Never block the gas outlet (hose nozzle 3/8” ( 10 mm) /
silencer). The exhaust line must always be free of ob-
structions (no back pressure) to ensure an unimpeded
discharge of gas. The cross-section of the outlet tub-
ing must be at least the size of the pump’s exhaust
connection.
+
Operation with silencer at the outlet: Check the silenc-
er regularly for chemical attack and deposits, replace
if necessary or use an exhaust line without silencer.
+
Particles and dust must not be aspirated. If necessary,
you must install appropriate filters. You must ensure
their suitability concerning gas flow, chemical resis-
tance and resistance to clogging prior to use.