Troubleshooting
Observation
Possible cause
Recommended action
The LCD screen remains blank
and the fan does not run when
the power is turned on
AC power cord is not
connected.
Check AC power cord connections at both
ends.
The fuse has blown.
Replace the fuse (see Appendix E).
Operation stops with alarm:
Display shows “No Load”
Electrophoresis leads are not
connected to the power supply
or to the electrophoresis unit(s),
or there is a broken circuit in the
electrophoresis cell.
Verify connections to the power supply and to
the electrophoresis cell. Then press Restart to
restart the run.
Verify the condition of wires in the
electrophoresis unit. Then press Restart to
restart the run.
Tape covering the gel foot has
not been removed
Remove tape from the gel foot and re-insert the
gels. Then press Restart to restart the run.
Buffer concentrations are too
low.
Use correct running buffer concentrations.
Buffer volume too low
Add running buffer so that wells are covered
at all times during electrophoresis. Then press
Restart to restart the run.
Current has dropped below the
minimum acceptable level (0.01
A).
Verify voltage settings, cable connections, and
buffer levels, then press Restart to restart the
run.
Operation stops with alarm:
Display shows “Over Voltage”
Output voltage was too high
and the power supply stops the
output.
Verify cable connections.
Verify that the gel and buffers are correct.
Press Restart to restart the run.
Operation stops with alarm:
Display shows “Ground Leak”
Ground leak detected during run
Check the electrophoresis system for improper
grounding. Press Restart to restart the run.
Operation stops with
alarm: Display shows “Over
Temperature”
Power supply is overheating
Turn off power supply. Check for sufficient air
flow around the power supply fan. After cooling
down, restart the power supply by turning the
power switch on.
If you cannot restart the instrument, turn off
the power, disconnect the power cord from the
outlet, and contact Technical Service.
Operation stops with alarm:
Display shows “Over Current”
Output current was too high,
and the power supply stops the
output.
Verify cable connections and running buffer
level. Verify that gel and buffer are correct. Press
Restart to restart the run.
Operation stops with alarm:
Display shows “Power
Interruption”
Power to the power supply was
interrupted during the run.
Verify cable connections and running buffer
level. Press Resume to continue the run or
Restart to restart the run.
A
PowerEase
™
Touch 350W Power Supply User Guide
25
Содержание Invitrogen PowerEase Touch PS0350
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