Buchi E-800 - 10 Help with Faults; Troubleshooting

BÜCHI Labortechnik AG Help with faults | 10
Operation Manual UniversalExtractor E-800 75/88
10 Help with faults
10.1 Troubleshooting
Problem Possible cause Action
Flange lock is not
inserted completely
The condenser is not in the
right position.
u Move the condenser flange
a little bit until the lock falls
into the wholes.
Instrument does
not work
Instrument is not connected to
the power supply.
u Make sure that the power
supply is connected and
switched on.
Method cannot be
started
Solvent tank is full u Empty the solvent tank.
Protection shield is open u Close the protective shield
Method stops Cooling water flow is too low u Check the cooling water
connection and all hoses
for bends and remove
them, if necessary
Cooling water sensor is defec-
tive (may be the coolant is
contaminated with algae, lime,
etc.)
u Contact the BUCHI cus-
tomer service
Protection shield lifted u Close the protection shield
Tank bottle full u Empty the tank bottle. See
Chapter9.2 "Removing the
tank bottle", page71
Loss of solvent Seals wrong, deformed or
damaged
u Exchange the seals.
Incorrect positioning of the
beaker/ glassware and seals
u Contact the BUCHI cus-
tomer service
Boiling retardation Incorrect positioning of the
beaker
u Place the beaker directly
onto the heating plate
Too long waiting time between
preparation of the instrument
and start
u Start the instrument quickly
after solvent was added
No boiling Incorrect positioning of the
beaker
u Place the beaker directly
onto the heating plate.
Beaker position is not active u Activate the beaker posi-
tion.
Heater power is set too low u Adapt the heating power to
the ambient conditions
(temperature, level above
sea).
u Choose correct solvent.
Not enough solvent u Add solvent. See Chapter
"Adding solvent through
the condenser with a
beaker", page66