12 | Help with faults
BÜCHI Labortechnik AG
78/88
Operation Manual FatExtractor E-500
Problem
Possible cause
Action
Loss of solvent
Seals wrong, deformed or
damaged
u
Exchange the seals.
Incorrect positioning of the
beaker/ glassware and seals
u
Move each condenser a
small distance forward and
backward.
u
Check that the sealings
are correctly installed.
u
Contact BUCHI Costumer
Service.
Not sufficient cooling
u
Make sure that the cooling
fits the requirements. See
Chapter 3.5 "Technical
data", page 22
Incorrect installed solvent col-
lector circuit
u
Make sure that the solvent
collector circuit is correctly
installed. See Chapter 5.7
"Connecting the coolant
tubes to the condenser
tank bottle", page 30 and
Chapter 5.6 "Connecting
the solvent tubes to the
condenser tank bottle",
page 29
Incorrect installed extraction
glass chamber
u
Make sure that the extrac-
tion glass chamber is cor-
rectly installed. See Chap-
ter 5.9.2 "Preparing the ex-
traction glass chamber
Soxhlet", page 31
Boiling retardation
Incorrect positioning of the
beaker
u
Make sure that the beakers
are correctly installed in
the beaker brackets and
on the heating plate.
Too long waiting time between
preparation of the instrument
and start
u
Start the instrument quickly
after solvent was added
Boiling surface of the beaker
is dirty
u
Clean the beaker
Boiling surface of the beaker
is worn
u
Replace the beaker