Bio-Rad Model EP-1 Econo Pump User Manual
Page 21
Section 9
Troubleshooting
Problem
Possible Cause
Solution
Pump displays
Power surge or
1. Turn the power switch off.
"OUT"
brownout
2. Press and hold down the
down arrow key and the CAL
key simultaneously while turning
the power switch on. This will
reset the pump. If the pump was
previously calibrated you will
have to recalibrate it.
Pump displays
Power outage
If you wish to continue a run in
"FAIL"
progress, press program run key.
Otherwise, press the run/stop
key.
Pump will not run
No power
Verify that powercord is plugged
(no LEDs lit)
in and the power switch is turned
on.
Fuses
Check that proper fuses are
installed and intact.
Insure that the calibration indica-
torlight is not flashing. For pump
to run, this light must either be
off or steadily lit.
Liquid remains
Platen not adjusted
Platen too loose. Turn platen
stationary in tubing
screw clockwise just until liquid
begins moving within tubing.
Clogged tubing,
Check tubing, fittings, and valves
valves, or fittings
for obstructions.
Damaged tubing
Check pump tubing for damage.
Replace damaged tubing.
Flow rate not
Pump tubing
Replace tubing.
consistent
damaged or worn out
Platen adjustment
Adjust platen.
incorrect
Wrong tubing size
Re-select tubing size on front
selected
panel of pump.
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