Bio-Rad Econo Gradient Pump Kits - Manual (Page 41)

Problem Possible Cause Solution
Cannot Pump must be Insure that pump is stopped.
calibrate stopped in order to
pump calibrate pump
RPM has been Select Flow Rate in screen 1 of
selected Setup.
Valves do not Pump is off Turn on the pump.
respond or
actuate
Valve cabled to Mixer and/or Aux valve must be
wrong connector plugged in to its correct socket.
Chart recorder Pump is off Turn on the pump.
or fraction
collector does Valve cabled to
Chart recorder or fraction
not respond wrong connector collector must be plugged in to
its correct connector.
Wrong fraction Setup screen 14 allows choice
collector specified of a Model 2110, 2128 or none.
in setup
Select the appropriate choice.
The proper Valves plugged See section 3.2 to plug valves
valves do not into wrong port. into the correct port.
appear on the
display
EGP program Wrong device Ensure that only the fraction
starts plugged into I/O collector or chart recorder is
unexpectedly port plugged into the I/O port.
Ensure that pin #3 is not
shorted.
Troubleshooting
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