4 - 13
*1): PRESSURE MAX LIMIT ERROR also appears when the
pressure exceeds the internal pressure limit.
The limit is changed automatically related to the flow rate.
The internal pressure limit is 60 MPa for 0.000 to 2.500
mL/min, and 30 MPa for 2.501 to 5.000 mL/min.
4.3.2 Troubleshooting
Table 4-3 offers a guideline for the troubleshooting of the pump.
Refer to this table first, if a problem occurs.
Table 4-3 The Chromaster 5160 Pump Troubleshooting
No. Symptom
Cause
Measure
1
Even if the PROG key is
pressed, setting of input mode is
failed.
The program mode is not displayed. Set the program mode by
pressing the INITIAL key.
2
The pump does not start when
pressing the PUMP ON/OFF
key.
Flow rate is set at 0.
Set the flow rate by pressing the
MANUAL key of the MANUAL
function.
3
Gradient delivery does not start
when pressing the START key.
1) The monitor screen is not
displayed.
2) The program mode is not
displayed.
1) Display the monitor screen
by pressing the ESC key.
2) Set the program mode by
pressing the INITIAL key.
4
Purging can’t be set or cancelled
by pressing the PURGE key.
1) monitor screen is not
displayed.
2) Waiting for numerical input.
Display the monitor screen by
pressing the ESC key.
5
A monitor lamp for the
degassing unit doesn’t light up.
1) The power supply of the pump
or the system unit is turned off.
2) The power supply cable is
unconnected.
1) Turn on the power supply
for the pump or the system
unit.
2) Connect the power supply
cable.
6
Air bubbles are coming out from
the exit of the degassing unit.
1) Rapid
suction
2) Looseness of the piping joint.
3) Clogging of the solvent filter
4) Negative pressure depending on
the position of the solvent bottle.
5) Incomplete replacement of
solvent
1) Set suction velocity as:
5 mL/min and below for
replacement of the solvent.
3 mL/min and below for an
analysis.
2) Tighten the joint manually.
3) Wash the solvent filter.
4) Place the solvent bottle in
the same height as the
instrument.
5) Replace the solvent
completely.
Summary of Contents for CHROMASTER 5160
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