How to troubleshoot no power on a Hach Refrigerator?
If the Hach Refrigerator has no power, first ensure that the AC power is reaching the electrical outlet. If the outlet is functional, and the refrigerator still has no power, the power supply might be defective (only for refrigerated samplers) and needs replacement. For a defective controller you should contact technical support.
Why Hach Refrigerator sampler does not have sufficient lift?
If your Hach Refrigerator sampler isn't lifting sufficiently, it could be due to several reasons. The strainer may not be completely submerged, in which case you should install the shallow depth strainer (2071 or 4652). Another possibility is that the intake tube has a leak, requiring replacement. Also, the pump tube may be worn, so you should replace the pump tubing. For a worn pump roller assembly contact technical support.
What to do if the sample volume is not correct in my Hach AS950 AWRS?
If the sample volume of the Hach Refrigerator is incorrect, consider the following possibilities: * The volume calibration might be off, so repeat the volume calibration. * The tube length specified in the sampling program could be incorrect; ensure the correct tube length is entered. * The intake tube may not be purging completely; make sure the intake tube is as vertical and short as possible. * The strainer may not be fully submerged; install the shallow depth strainer (2071 or 4652). * The pump tubing and/or roller assembly may be worn; replace the pump tube and/or roller assembly. * The liquid detector might be disabled; turn the liquid detector on and complete a volume calibration. * The liquid detector may not be operating properly; calibrate the liquid detector with ...
General| Brand | Hach |
|---|---|
| Model | AS950 AWRS |
| Category | Refrigerator |
| Language | English |
Technical specifications for the Refrigerated Sampler and All Weather Refrigerated Sampler (AWRS) models.
Technical specifications relevant to the AS950 controller unit.
Explanation of hazard symbols (DANGER, WARNING, CAUTION, NOTICE) and their meanings.
Details about specific safety labels and symbols found on the instrument.
Compliance with Canadian interference regulations (IECS-003, Class A) for digital apparatus.
Compliance with FCC rules for Class A digital devices, including operation conditions.
Description of the lockable cabinet door feature on the AWRS model.
Explanation of the function of the factory-installed controller compartment heater.
Guidelines for installing the sampler in appropriate indoor or outdoor locations.
Steps for preparing the sampler, including cleaning sample bottles.
Procedure for installing a single sample bottle for composite sampling.
Instructions for installing multiple sample bottles in the sampler.
Guidance on connecting the intake tubing to the sampler and sample source.
Details on connecting the sampler unit to the main power source, including safety precautions.
Information regarding the electrical connectors on the controller unit.
Instructions for connecting a Sigma 950 or FL900 flow logger to the AUX I/O port.
Steps for connecting a non-Hach flow meter to the AUX I/O port.
Procedure for powering on the sampler controller and refrigerator.
Steps to complete after physical installation, referring to the operations manual.
Guidelines for cleaning the sampler's exterior and internal components.
Instructions for monitoring and replacing the desiccant cartridge in the controller.
Steps for examining and replacing worn pump tubing due to roller wear.
Table of common problems, their causes, and corrective actions.
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