Table 9 Alarms and resolutions (continued)
Alarm message Description Resolution
MOTOR ERROR The pump motor home position was not
found.
Make sure that the motor is connected to the
main circuit board.
Make sure that the optical switch is
connected to the circuit board. Make sure that
the switch is secure in the chassis.
Replace the motor.
Replace the optical switch.
Replace the main circuit board.
ERR TEMP The electrode heater block is not properly
temperature controlled.
Make sure that the thermistor and heater
resistor cable assemblies are connected into
the correct locations.
8.2 Warning list
A warning message shows when a possible problem condition is present. The instrument continues
operation when a warning condition is present. Refer to Table 10.
To recall the active warnings, use the RECALL WARNINGS function in the alarm menu. To clear the
warnings, use the CLEAR WARNINGS function in the alarm menu.
Until the surface of the flow cell becomes completely wetted, bubbles may cling to the inside walls
and cause erratic readings. This condition is temporary and the duration depends on the sample
properties. If this condition continues, flush the system with surfactant (2697453) instead of the
sample. Several hours of surfactant flush may be necessary to completely wet the surfaces of the
flow cell.
Table 10 Warning messages
Warning Definition Resolution
POWER Power failed. In default condition,
this warning is disabled.
Inspect wiring and circuit breakers that
supply power to the equipment.
MARG OFFSET A high offset count was measured
during calibration.
Make sure that the electrode has inner fill
solution. Fill if necessary.
Replace the lanthanum crystal tip.
Replace the fluoride half cell.
Replace the reference half cell.
ERR SLOPE (the electrode
slope is less than -20 mV)
Standards plumbed incorrectly Make sure that the standards and the
placement of the standards are correct.
Lanthanum crystal tip needs to be
replaced
Replace the lanthanum crystal tip.
Electrodes are reversed Put electrodes and BNC connectors in
the proper positions.
MARG SLOPE (the electrode
stop is between -20 mV and
-40 mV)
The electrode slope is marginal Replace the lanthanum crystal tip.
English 29
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