7 Trouble shooting
Electrophoresis Power Supply EPS 3501 User Manual 18-1130-21 Edition AD
If an error that can be corrected by the user occurs, either during a run or when
switching on the power supply, the program enters the HALT mode and the output is
switched off. Four different type of errors can cause HALT. The following list shows the
error message on the display, the cause and the remedy.
Error message
Cause
The current is less than the
HALT: Low start
lower limit. This can be due
current!
to incorrect connection of
the electrophoresis equipment
or due to use of buffers with
extremely low conductivity.
The current to ground leakage
HALT: Ground
in the electrophoresis unit is
leakage current
too high.
HALT: Mains
The mains voltage is too low,
Voltage too low!
see Specifications.
Mains power failure for more
HALT: Mains fail
than 7 s.
Program stopped
If a serious error occurs, the program enters the FAIL mode. The output is switched off
and an error message is shown in the display.
FAIL:Code No: xxx
Call service
Please read the error code number and contact your GE Healthcare representative.
Recycling
This symbol indicates that the waste of electrical and electronic equipment must not
be disposed as unsorted municipal waste and must be collected separately. Please
contact an authorized representative of the manufacturer for information concerning the
decommissioning of your equipment.
Trouble shooting 7
Remedy
1. Check connections and/or
buffers.
2. Press MORE, switch off the
start current check in the
MORE mode.
IMPORTANT! Read Section
5.4 first.
Check the electrophoresis
unit.
Check voltage selector.
Check mains voltage.
Press PAUSE CONTINUE to
continue running a program
or STOP to interrupt the run.
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