7 | Cleaning and servicing
BÜCHI Labortechnik AG
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Operation Manual Rotavapor® R-300
7.2
Checking the system for leaks
Recommendation:
When using an Interface I-300/I-300 Pro there is the option of performing a leak test
to check the system for leaks. For details, refer to the operating instructions of the
Interface I-300/I-300 Pro.
Precondition:
R
A vacuum pump with a pressure gauge is connected.
R
The system is dry.
u
Make sure that the system is dry. Remove any solvent accumulations if
necessary.
u
Make sure that all flasks are fitted and the glass stopcock is closed.
u
Connect the vacuum pump and evacuate the R-300 to a pressure of 50 mbar.
u
Switch off the vacuum pump. If necessary, disconnect the vacuum tubing so as to
exclude the vacuum pump as a possible source of a leak.
u
Check the pressure after one minute.
ð
If the pressure has risen by less than 5 mbar after one minute, the system is
air-tight.
If the system is not air-tight:
u
Check all seals, see Chapter 7.5 "Checking seals", page 68.
u
Examine all tubing and replace if they are brittle or cracked.
u
Grease ground glass joints if necessary.
NOTE
Damaged ground glass joints can also lead to leaks in the system.
7.3
Cleaning the splash guard (optional accessory)
u
Wipe down the splash guard with a damp cloth.
u
If heavily soiled, use ethanol or a mild detergent.
