Hach-Lange SIGMA SD900 Refrigerated Sampler and All Weather Refrigerated Sampler User Manual - Manual (Page 77)

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Section 6 Maintenance
WARNING
Only qualified personnel should conduct the tasks described
in this section of the manual.
WARNING
Potential shock hazard. Always disconnect power to the
sampler before performing any maintenance or service.
CAUTION
Biological sample hazard. Follow safe handling protocols
during contact with sample bottles and sampler components.
Disconnect the sampler from power to disable the pump
before handling.
6.1 Upgrades, Repairs, General Maintenance
Only a qualified technician should service the sampler. For
example, steps that require knowledge of CMOS electrostatic
discharge precautions and advanced electronics training should
only be performed by a qualified technician.
6.2 Sampler cleaning
Warning
Fire Hazard. Models of AWR samplers with cabinet heaters
may ignite flammable materials and cleaning solvents. DO
NOT use any flammable liquids or materials to clean or
disinfect the sampler or any component under the cabinet
hood of the AWR samplers. Before performing any cleaning
operation, disconnect the AWR sampler from its power source.
If cleaning of the sampler controller and pump cannot be done
with water, the sampler must be disconnected and moved to a
location outside the cabinet for cleaning. Allow sufficient time
for the sampler controller and pump to dry before reinstalling
and putting the sampler back into service. Do not attempt to
clean the controller compartment heater by spraying it with
liquids. Protect the heater from moisture such as ice and
snow.
Important Note: Do not attempt to clean the controller
compartment heater by spraying it with liquids of any kind. The
heater should be protected from moisture such as ice and snow.
Refrigerator
Clean the condenser fins and coils as needed with a brush or
vacuum to maintain efficient heat transfer.
Sampler cabinet and tray
Clean the internal and external surfaces of the sampler with a damp
cloth and mild detergent. Do not use abrasive cleaners or
solvents.
Sample bottles
Clean the bottles using a brush and water with a mild detergent,
followed by a fresh water rinse and a distilled water rinse. Glass
bottles may also be autoclaved.