Hach APA 6000 Maintenance Et Dépannage page 18

Table 2 Sensor warnings (continued)
Message Description
STD1 (or 2) LOW or The standard,
REAGENT1 (or 2) reagent or cleaning
LOW or CLEANER solution level is less
LOW than 5%.
STD1 (or 2) FAIL The reading of the
ACCURACY standard is not
within acceptable
limits.
DETECTOR LIGHT Light is getting into
LEAKAGE the colorimeter.
LED OUTPUT LOW The colorimeter LED
light output is too
low.
LED OUTPUT HIGH The colorimeter LED
light output is too
high.
18 English
Solution
Identify the fluid level in each
analyzer bottle. If the fluid level is
almost empty, replace the bottle.
Refer to Replace the reagents and
standards on page 5. If the fluid
level is not almost empty, set the
fluid level to the correct level.
Note: This warning only occurs when
the Level Monitor function is enabled.
Refer to the operations manual.
Replace the reagents and/or
standard solutions.
Replace the colorimeter module.
Replace the colorimeter module if
the problem continues.
Replace the colorimeter module if
the problem continues.
Table 3 Sensor alarms
Message Description
A/D FAILURE The main analog to
digital converter of the
colorimeter module has
failed.
RAM TEST FAILED The RAM on the APA
main circuit board has
malfunctioned.
INVALID DIP SWITCH The chemistry DIP switch
is set to an illegal
location.
VALVE COMM FAIL The valve module is not
communicating with the
controller.
BURETTE1 COMM The autoburette (pump)
FAIL module is not
communicating with the
controller.
MIXER COMM FAIL The mixing module is not
communicating with the
controller.
DETECTOR COMM The colorimeter module
FAIL is not communicating
with the controller.
INTERNAL COMM There is an internal
FAIL communication problem.
Solution
Start the analyzer. Refer to
Put the analyzer back into
operation on page 5.
Replace the colorimeter
module if the problem
continues.
Start the analyzer. Refer to
Put the analyzer back into
operation on page 5.
Contact technical support if
the problem continues.
Contact technical support.
Make sure that all the
cables are securely
connected. If corrosion is
present on the harness that
connects to the backplane,
clean the contacts. Replace
the harness or backplane if
corrosion is visible. Replace
the valve module if the
problem continues.
Replace the autoburette
module.
Replace the mixing module.
Replace the colorimeter
module.
Contact technical support.