YOKOGAWA WE440, Руководство пользователя

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<8. Maintenance Schedule>
8-9
IM 12Y18A04-01EN 1st Edition : Oct. 04, 2019-00
Measurement/Calibration/Validation Messages
Messages Cause Solution
Sample empty Performing analysis with single
sample and sample chamber is
empty.
Check for Sample flow. Check for
pipe blockages to sample chamber.
Testing optics, please check for
optics failure
No light output from optics. Run a Clean Cycle and try again.
Inspect cell and clean, check
for light detection under LED
& DETECTOR CONTROL in
Diagnostics menu.
Testing optics, low signal level ...
Cell may be coated and may
require cleaning.
Low light output from Optics.
Optical window of cell may be
coated.
Run a Clean Cycle and try to clean
the reaction cell with detergent.
Testing optics please check for
stray light
External light is entering the cell. Check if overflow cap on top of the
reaction cell is loose.
Please check for heater failure If heater is enabled in Method, and
the Set point temperature is higher
than ambient and Cell temperature
differs from set point by ± 10ºC for
90 secs..
Try a different set point
temperature. Call a service agent.
Checking the reaction temperature.
Temperature below set point.
If the temperature is not able to
reach the set point and is below the
set point.
Re-calibrate the Thermistor.
Try a different set point
temperature. Call a service agent.
Checking the reaction temperature.
Temperature above set point.
If the temperature is not able to
reach the set point and is above
the set point.
Re-calibrate the Thermistor.
Try a different set point
temperature. Call a service agent.
Taking blank measurement,
unstable signal.
Unstable temperature, Cell may be
coated, or may be due to Optics
failure.
Perform Clean Cycle and Calibrate
Optics and thermistor.
Collecting data, unstable signal Unstable temperature or cell may
be coated, or may be due to optics
failure.
Perform Clean Cycle and calibrate
optics and thermistor.
Calibrating Optics Messages
Messages Cause Solution
Unstable signal, stray light is high
please check.
Some external Light is entering in
to the cell.
Check for possible external light
entering areas on the reaction cell.
Optimum light level. Calibration is
aborted.
Cell may be coated. Perform Clean Cycle and then
Calibrate Optics.
Calibrating Thermistor Messages
Messages Cause Solution
Temperature below set point
please check for hardware
malfunction.
May be due to the connectors
or the thermistor or heater
malfunctioning.
Check for thermistor and heater
connections, and calibrate them.
Temperature above set point
please check for hardware
malfunction.
May be due to the connectors
or the thermistor or heater
malfunctioning.
Check for thermistor and heater
connections, and calibrate them.
Measured temperature differs
widely from set temperature.
Please check for hardware
malfunction.
May be due to the connectors
or the thermistor or heater
malfunctioning.
Check for thermistor and heater
connections, and calibrate if
necessary.