Radiometer Analytical CTV101 Mode D'emploi page 12

T T T T T r r r r r oubleshooting oubleshooting oubleshooting
oubleshooting
oubleshooting
The EDI101 motor does not start The EDI101 motor does not start The EDI101 motor does not start
The EDI101 motor does not start The EDI101 motor does not start
Check the power circuit on the CTV101 (mains socket, mains cable,
power adapter, ...).
Check the connection between the CTV101 Speed Control Unit and the
EDI101 Rotating Disc Electrode.
In internal control mode, check that the 3-position switch is set to
"0-5000 rpm" and that the potentiometer indicates "020" at least.
In external control mode, check that the 3-position switch is set to
"EXTERNAL CONTROL" and that the DC voltage source outputs a non
zero voltage between 0 and +5 V. Check the connections between the
CTV101 Speed Control Unit and the voltage source.
In particular, check that the "+" pole terminal of the voltage source is
connected to the central contact and the "-"pole terminal to the shielding
of the CTV101 "EXT/0-5 V" BNC socket.
The measurement signal shows background noise and The measurement signal shows background noise and The measurement signal shows background noise and
The measurement signal shows background noise and The measurement signal shows background noise and
interferences interferences interferences
interferences interferences
Check the connections between the potentiostat (or the polarographic
analyzer) and the EDI101 Rotating Disc Electrode.
Unscrew the working electrode socket of the EDI101 and check that the
contact brush (3a) (see chapter "Description") is not worn out. After a
long time of use (several hundreds of hours), it is recommended to
replace the contact brush (Radiometer Analytical Part no.: A35T630).
Grind the contact brush (3a) at 3000 rpm for 20 minutes after
replacement.
Shield the measurement cell in order to eliminate the interferences due
to electrochemical sources. Do not hesitate to place the measurement
system in a Faraday cage.
The speed control is incorrect The speed control is incorrect The speed control is incorrect The speed control is incorrect The speed control is incorrect
Check that the supply voltage does not differ by more than 15 % from the
CTV101 supply voltage (24 Vdc).
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