VACUUBRAND PC 3001 basic pro - Manual (Page 31)

page 31 of 54
If pumping condensable vapors (water vapor, solvents,
etc.), let the pump run with gas ballast to help purge any
condensation in the pump.
Prevent internal condensation, transfer of liquids or dust.
The diaphragms and valves will be damaged, if liquids are
pumped in significant amounts.
Check the pump regularly for external soiling and depos-
its. Clean the pump if necessary to avoid an increase of
the pump’s operating temperature.
A temperature sensor at the circuit board protects the mo-
tor: Current limitation in the event the temperature at the
circuit board raises above 158°F (70°C). At temperatures
above 185°F (85°C) the pump is switched off. In the event
of a motor blockage (after 10 start-up attempts) the pump
is switched off.
Note: Only manual reset is possible. Disconnect the pump
from the power source. Identify and eliminate the cause of
failure.
Avoid overheating (e.g., due to hot process gases).
A warm up period (approximately 15 min.) is required to
ensure that the rated ultimate vacuum and pumping speed
are attained.
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.