Basic Safety Instructions
109030
7
2.4
Mechanical Systems
Improper use can lead to injuries or material damage. Observe the following instructions:
Only operate the chemvac combination pump systems with hoses of the specified dimen-
sions.
Hazardous substances must be separated out as far as this is technically possible before
they reach the pump.
External mechanical stresses and vibrations must not be transmitted to the pump. Only
use flexible laboratory hoses for connecting chemvac combination pump systems.
Pressure must not be allowed to build up at the pressure port.
The pump system must not be used to suck up fluids. Lay the exhaust pipe so that it
slopes downwards, so allowing condensate to flow out of the pump. Collect the conden-
sate and dispose of it in an environmentally compatible manner.
Maintain a space of least 20 cm between the pumps and adjacent parts in order to enable
the pumps to cool.
WARNING !
Do not block the exhaust port. Remove any exhaust caps or plugs. Otherwise, pres-
sure will build up with potential of bursting hazard with possible injury to personnel.
WARNING !
Solid particles in the pumping medium impair the pumping action and can lead to
damage.
Prevent solid particles penetrating into the pump.
When handling glass vessels, pay attention to:
Only use glass vessels with a plastic coating for splinter protection.
Only use vessels which are suitable for use with vacuums (e.g. round-bottomed flasks).
We recommend that only glass components supplied by the manufacturer are used.
Do not use Erlenmeyer flasks.
Before each evacuation, check glass vessels for damage which might impair their
strength, replace them if any such damage is found.
Do not heat glass vessels on one side only.
Retardation of the boiling of the gases to be pumped can lead to a sudden pressure in-
crease. Prevent retardation of boiling by means of suitable measures (e.g. turbulent agi-
tation).
