8 | Help with faults
BÜCHI Labortechnik AG
42/60
Operation Manual Rotavapor® R-100
8
Help with faults
8.1
Faults, possible causes and remedies
Fault
Possible cause
Remedy
Device does not
work
Device is not connected to
power supply
u
Check power supply (see
Chapter 5.6 "Electrical con-
nections", page 25).
Fuse blown
u
Replace fuse (see Chap-
ter 8.2.2 "Replacing the
fuse", page 45).
u
If fault recurs, contact
BUCHI Customer Service.
Heating bath
fails to heat up
Device is not connected to
power supply
u
Check power supply (see
Chapter 5.6 "Electrical con-
nections", page 25).
High temperature cut-out has
tripped
u
Reset the overheat safety
cut-out (see Chapter 8.2.1
"Resetting overheat safety
cut-out", page 44).
Fuse blown
u
Replace fuse (see Chap-
ter 8.2.2 "Replacing the
fuse", page 45).
u
If fault recurs, contact
BUCHI Customer Service.
System leaking
Ground glass joints not greased
u
Grease ground glass joints.
Tubing leaking
u
Replace tubing (see Chap-
ter 5.5 "Connecting the vac-
uum and cooling media tub-
ing", page 24).
Seal defective
u
Replace seal (see Chap-
ter 7.3 "Checking seals",
page 40).
Vacuum is not
achieved
Back-evaporation from the re-
ceiving flask
u
Empty the receiving flask
(see Chapter 6.3.2 "Remov-
ing the receiving flask",
page 38).
Temperature difference be-
tween evaporating flask and
condenser less than 20 °C
u
Increase cooling (see Chap-
ter 6.2.2 "Adjusting distilla-
tion conditions", page 34).
System leaking
u
Check system for leaks (see
Chapter 7.2 "Checking the
system for leaks", page 39).
Water pressure of glass filter
pump too low
u
Increase water flow (see
pump operating instruc-
tions).
Vacuum pump too weak
u
Use suitably dimensioned
vacuum pump.
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