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8 Troubleshooting
98
8.4
Causes and Measures for Alarm
Item
Alarm
Causes
Measures
Refer
Comm
on
WARM-
UP
Waiting to be stabilized after
the analyzer unit power ON.
No problem. (It takes
approximately 60 minutes until
the analyzer unit is stabilized.)
"3.2 Starting Operation" (page
13)
CELL
MOTOR
ERR.
Contamination of measuring
cell.
Clean the measuring cell.
"7.3.1 Cleaning of Measuring
Cell" (page 84)
Failure in analyzer unit cell-
motor.
Replace the motor.
Service call
SENSOR
COMM.
ERR. *
Poor connection of analyzer
unit cables.
Connect the analyzer unit
cables properly.
Poor connection of analyzer
unit cables or control unit, or
faulty parts.
Connect the inside cables of the
analyzer unit and control unit
again.
Service call
SAMPLE
LACK
Sample water supply is
stopped.
Check the sample water supply
and turn supply on.
"3.1 Preparation for Operation"
(page 12)
Valve shut in improper
condition.
Adjust the valves V1 to V4 in
proper condition.
"3.1 Preparation for Operation"
(page 12)
Clogging of piping to the
overflow tank.
Clean the piping.
"7.4 Cleaning of Sampling Unit"
(page 92)
Failure in float switch for no
sample detection.
Replace the float switch.
Service call
PIO
COMM.
ERR. *
Communication error
between input/output
substrate and CPU substrate
of control unit.
Turn the power OFF/ON. This
may solve the problem.
Poor connection of control
unit cables, or faulty parts.
Connect the inside cables of
control unit again.
Service call
POWER
ON/OFF
Power OFF by the electric
outage.
No problem.
BATTERY
ERR.
Backup battery for clock has
expired.
Replace the clock backup
battery.
Service call
LAMP
ERR.
Contamination of measuring
cell.
Clean the measuring cell.
"7.3.1 Cleaning of Measuring
Cell" (page 84)
Light source is temporarily off.
Lamp may not be illuminated
until the light source is warmed
up. Turn the power ON/OFF and
wait for approximately 30
minutes as it may be restored.
Service call
Output is decreased by
deterioration of light source.
Replace the light source.
Service call
Poor connection of control
unit cables, or faulty detector
or substrate
Connect the inside cables of
control unit again.