8 | Help with faults
BÜCHI Labortechnik AG
86/102
Operation Manual Interface I-300 Pro
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
Connections).
Valve or pump
frequently
switches over
System is leaking.
u
Check system for leaks (see
Rotavapor operating instruc-
tions).
u
If necessary, replace tubing
and/or seals.
Hysteresis setting is too small.
u
Select a larger hysteresis
(for terminal vacuums
greater than 700 mbar, set
to automatic hysteresis; see
Manual mode).
Valve does not
switch over
Valve coil is dirty.
u
Contact BUCHI Customer
Service.
Valve lead not plugged in.
u
Plug in valve lead.
Valve is not adjusted.
u
Contact BUCHI Customer
Service.
Vacuum is not
achieved
Back-evaporation from the re-
ceiving flask.
u
Empty receiving flask (see
Rotavapor operating instruc-
tions).
System is leaking.
u
Check system for leaks (see
Rotavapor operating instruc-
tions).
u
If necessary, replace tubing
and/or seals.
Water pressure of glass filter
pump is too low.
u
Increase water flow (see
pump operating instruc-
tions).
Vacuum pump is too weak.
u
Use suitably dimensioned
vacuum pump.
8.2
Error messages
NOTE
The system indicates faults by showing error messages and suggests remedial mea-
sures.
8.3
Customer service
Repairs to the device may only be carried out by authorized service technicians. The
service technicians have been comprehensively technically trained and are aware of
the potential hazards that can arise from the device.
The addresses of the official BUCHI Customer Service offices can be found on the
BUCHI website at: www.buchi.com. If you have any questions regarding technical is-
sues or faults, please contact those offices.
