Hach-Lange SD900 Refrigerated Sampler, SD900 AWRS User Manual - Manual (Page 43)

C A U T I O N
Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and
national regulations.
Troubleshooting
General troubleshooting
Table 4 shows causes and corrective actions for several common problems.
Table 4 Troubleshooting table
Problem Possible cause Solution
No instrument power Problem with the main power
source. Make sure that AC power gets to the
electrical outlet.
Defective power supply
(refrigerated sampler only) Replace the power supply.
Defective controller Contact technical support.
Sampler does not have
sufficient lift. Strainer is not completely
submerged. Install the shallow depth strainer
(2071 or 4652).
Intake tube has a leak. Replace the intake tube.
Pump tube is worn. Replace the pump tube.
Pump roller assembly is worn. Contact technical support.
Sample volume is not correct. Incorrect volume calibration Repeat the volume calibration.
Incorrect tube length is specified in
the sampler program. Make sure that the correct tube length is
in the sampler program.
Intake tube does not purge
completely. Make sure that the intake tube is as
vertical and as short as possible.
Strainer is not completely
submerged. Install the shallow depth strainer
(2071 or 4652).
Worn pump tubing and/or roller
assembly. Replace the pump tube and/or roller
assembly.
The liquid sensor is disabled. Turn the liquid sensor on and complete a
volume calibration.
Liquid sensor does not operate
properly. Calibrate the liquid sensor with the same
liquid that is sampled.
Error messages
Table 5 shows the possible error messages.
Table 5 Error messages
Message Description Solution
ERROR
WRONG RANGE The value that was entered is outside of
the acceptable range. Enter a number that is within the
range on the bottom of the screen.
BOTTLE NUMBER
OUTPUT DISABLED
ON PIN F When program complete output is
enabled, the bottle number output on
the auxiliary port is disabled. To change to bottle number output,
disable the program complete output.
English 41