MODEL YB8 MAINTENANCE
April 1999/Manning Environmental Inc.
Page C-7
EPA-600/4-77-039 ("Sampling of Water and Wastewater" by Dr. Phillip E. Shelley), or consult with the
facility t hat will do t he actual t esting of t he samples. T hey could probably assist in setting a cleaning regime
that will help produce the most accurate results possible.
The following procedures are very general outlines of procedures for cleaning certain parts of the sampler:
Intake Hose
There are two types of intake hose used with the sampler - PVC and
Teflon . PVC intake hose is used for general purpose sampling
®
(Non-Toxic) applications. T eflon hose is used fo r priority pollutant
®
sampling (Toxic) applications.
1. Remove the intake hose. R emove the strainer if
necessary.
2. Wash the intake hose and strainer using a
cleaning solution appropriate for the application.
The use of methylene chloride or other solvents
may leave a residue that could contaminate the sample. Use a test tube brush to scrub the
internal surfaces of the strainer. Pull the brush through the hose with a wire to clean the
internal surfaces of the hose.
3. Rinse the hose and strainer thoroughly in clean water (warm water is best) and
reassemble.
It may be easier and more convenient to simply use a new hose for each sample configuration. This
eliminates cleaning and disposal of potentially hazardous regulated chemicals.
Liquid Sensor
The continuity t ype liquid sensor will need t o be cleaned occasionally. Like any piece of the sample tract, it
has t he ability t o collect particulate matter, which needs to be
removed. B y removing t his particulate matter, it ensures that yo u will
receive optimum performance from the unit.
The ultrasonic liquid sensor will not need to be cleaned. B y changing
the pump tubing you in effect, clean, the ultrasonic sensor.
1. Remove the pump tubing from the liquid
connectors.
2. Insert a bottle brush or other scrubbing type
device and vigorously insert the scrubber in and out of the sensor.
3. Reconnect the pump tubing to the liquid connectors and run a manual cycle with clean
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