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R-Biopharm Rhone Ltd
7.4 Error Light Observed on
Power Pack
• The LED will light up if there is no KOBRA® CELL
attached to the current source.
• The LED will also light up when the KOBRA® CELL
is dry as the flow of the current source is inhibited.
• Check the red and black terminal leads are
connected to the KOBRA® CELL correctly.
• Check the KOBRA® CELL has mobile phase running
through it. It is important to keep liquid in the
KOBRA® CELL at all times in order for it to function.
It is advised to run mobile phase through the
KOBRA® CELL for at least 30 minutes prior to
injection of the standards or samples.
• Check the power pack. If a connection or
component of the power pack is faulty the power
pack should be replaced.
7.5 Leakage from KOBRA® CELL
• The locating screws on the KOBRA® CELL have not
been tightened correctly. Please refer to 3.2,
Precautions When Assembling.
• Check the locating screws on the KOBRA® CELL
have not been over tightened causing damage to
the threads. Once the threads are damaged a new
white plastic housing is required.
• Check the PEEK
TM
tubing is not blocked or
distorted. Replace if required.
7.6 KOBRA
®
CELL Causing High
Pressure on the HPLC
• Check the PEEK
TM
tubing is not blocked or
distorted. Replace if required.
• Check the inlet and outlet connections that the
PEEK
TM
tubing is inserted into. If they are blocked
they can be unscrewed and sonicated.
• Check the internal components in the
KOBRA® CELL have been inserted in the correct
orientation. Reassemble if required (Fig. 1 and 2).
7.7 Storage Plug Broken Off or
Lodged in KOBRA
®
CELL
• Return to R-Biopharm Rhône for repair.
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