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3700 Portable Samplers
Section 5 Routine Maintenance
5.1 Cleaning the Sampler
5.2 Cleaning Protocols for
Priority Pollutants
This section covers routine maintenance of the 3700 Portable
Samplers. It includes the following sections:
• Cleaning the sampler case, tubing, and sample bottles
• Cleaning protocols for priority pollutants
• Replacement of pump tubing
• Replacement of suction tubing
• Changing the internal desiccant
The following sections contain instructions for cleaning the
sampler case, tubing, and bottles. Cleaning protocols for priority
pollutants are given. Disassemble the sampler for cleaning by
following the instructions found in Assembly and Disassembly of
the Case in Section 2.
Case – You can clean the top cover and sample bottle base with
warm soapy water or by spraying them with a hose. You can
clean the center section in a similar manner if a power source is
attached to the 12 VDC connector and the flow meter connector
is tightly capped.
Tubing – The suction line and pump tubing can be cleaned by
placing the end of the suction line in a cleaning solution and
pumping this solution through the tubing system using the pump
forward and pump reverse keys. Follow with a clean water rinse.
Sample Bottles – The glass sample bottles have a wide mouth
to facilitate cleaning. You can wash them with a brush and soapy
water, in a dishwasher, or in an autoclave. (Do not autoclave the
plastic lids.) The 1000 ml polypropylene plastic wedge-shaped
sample bottles also have a wide mouth and are formed so that
they have no inaccessible corners. You can wash plastic bottles in
a dishwasher but do not autoclave them.
The following sections are taken from U.S. Environmental Pro-
tection Agency Publications EPA-600/4-77-039 ("Sampling of
Water and Wastewater" by Dr. Phillip E. Shelley) for an example of
sampler cleaning procedures for priority pollutants.
Proper Cleaning – The proper cleaning of equipment used in
the sampling of water and wastewater is essential to ensuring
valid results from laboratory analysis. Cleaning protocols should
be developed for all sampling equipment early in the design of
the wastewater characterization program. The laboratory
analyst should be consulted, both to ensure that the procedures
5-1
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