Sampler Maintenance - YZ Systems DynaPak DP-2020N Manual

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10. Sampler maintenance

10.1 Recommended preventative maintenance schedule
Every sampling situation is unique. Below are our
recommendations for average conditions. A higher BTU
content will necessitate more frequent pump/filter
maintenance.
10.2 b
10.2 d
a. Clean and lubricate the sample pump every six months.
b. Check the filter element every six months replacing as
necessary.
10.2 c
10.2 f
c. Test the battery monthly.
d. Test the system for leaks each time a fitting or connection
has been made.
10.2 Cleaning and lubricating the DP-2000 pump
10.2 e
a. Close the isloation valve.
b. Disconnect the plastic tubing from the solenoid valve to
the pump diaphragm housing by depressing the tubing
release sleeve on the diaphragm housing fitting while
10.2 a
pulling out the tubing. It is not necessary to remove the
fitting from the diaphragm housing.
c. Remove the sample discharge (1/8" stainless steel
tubing) from the pump body.
d. Screw the stroke adjustment knob all the way down to the
0 cc setting.
e. Unscrew the pump body by hand from the inlet check
valve assembly. Separation at this point is recommended
to maintain proper tubing location and alignment between
the pump body and the probe body. Do not remove the inlet
check valve body from the manifold unless cleaning is
necessary. To replace the inlet check valve o-ring, cut the
10.2g
o-ring off the head of the dart and stretch the new o-ring over
the head of the dart using a light coat of assembly grease.
f. Remove the diaphragm housing from the pump body by
unscrewing the diaphragm housing and carefully pulling the
11.2 g
plunger out of the pump body. Inspect the plunger shaft for
damage or wear. The diaphragm chamber houses the
diaphragm, return spring and plunger assembly. The
diaphragm chamber should not be disassembled unless
one of these items needs replacing.
g. Remove the internal bushings and o-rings from the pump
body by inserting a non-metallic rod (larger than 1/4",
smaller than 1/2") into the top of the pump body. Gently tap
to remove all bushings and o-rings out the bottom of the
pump body.
h. Clean and inspect all components. Replace if necessary.
NOTE: normal service generally requires only the
replacement of the o-rings and seal. A seal repair kit
(part number D3-0002) is available from YZ.