BUCHI Rotavapo R-100 - Manual (Page 43)

BÜCHI Labortechnik AG Help with faults | 8
Operation Manual Rotavapor® R­100 43/60
Fault Possible cause Remedy
Optimum distilla­
tion not
achieved Too much back­evaporation
from the receiving flask (espe­
cially with solvent mixtures) u Empty receiving flask and
restart distillation (see Chap­
ter 6.3.2 "Removing the re­
ceiving flask", page 38,
Chapter 6.1.4 "Fitting the re­
ceiving flask", page 30 and
Chapter 6.2 "Performing dis­
tillation", page 32).
Other faults in distillation
process (e.g. sudden cooling,
too little heat flow, etc.) u Check temperatures of heat­
ing bath and coolant and ad­
just as necessary (see
Chapter 6.1.1 "Preparing the
heating bath", page 27 and/
or cooler operating instruc­
tions).
u Lower pressure until distilla­
tion resumes (see vacuum
pump operating instructions).