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3.2 Recommended maintenance schedule
Perform the following routine maintenance on the module to ensure reliable operation and
accurate results. When using the system throughout the day (and on nights and weekends), or
when using aggressive solvents such as buffers, perform these maintenance tasks more
frequently.
3.2.1 Recommended CH-A routine maintenance schedule
Maintenance procedure
Replace the column
Replace the ferrule on the column fitting
Replace the APH assembly
Replace the column-stabilizer assembly
Replace the leak sensor
Replace the column in-line filter unit frit
Clean the instrument with a soft, lint-free cloth,
or paper dampened with water
3.3 Spare parts
To ensure that your system operates as designed, use only Waters Quality Parts. Visit
www.waters.com/wqp
3.4 Safety and handling
Observe these warning and caution advisories when you perform maintenance operations on
your system.
Warning:
working with hazardous materials. Consult the Safety Data Sheets regarding the
solvents you use. Additionally, consult the safety representative for your organization
regarding its protocols for handling such materials.
for information about Waters Quality Parts, including how to order them.
Observe Good Laboratory Practice (GLP) at all times, particularly when
December 4, 2019, 715005052 Version 02 (previously released as Rev.B)
Frequency
During scheduled routine maintenance or as
needed
During scheduled routine maintenance or as
needed
As necessary
As necessary
As necessary
During scheduled routine maintenance or as
needed
As necessary
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