6100CR Refrigerated Sampler - Isco
6100CR Refrigerated Sampler - Isco
6100CR Refrigerated Sampler - Isco
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<strong>6100CR</strong> <strong>Refrigerated</strong> <strong>Sampler</strong><br />
Section 4 Maintenance and Special Features<br />
2. The needle assembly consists of the needle, a heavy coil<br />
spring, three long slide rods, and four plastic rings. The<br />
plastic rings are knurled (lines on their surface). These<br />
rings are the needle mounts.<br />
3. To remove the needle assembly, loosen the guide nut, the<br />
top gray plastic nut in the middle of the assembly.<br />
4. Remove the drain hose from the bottom of the assembly.<br />
5. Push up on the ball on the lower end of the needle assembly<br />
to compress the ball and remove the top remaining nut.<br />
Note<br />
There is spring pressure on the assembly forcing it down. Hold<br />
the assembly up while removing the nut, then release slowly to<br />
prevent damage to the needle assembly.<br />
When pressure is released, disconnect the sample tube<br />
from the top of the needle and remove the assembly from<br />
the tower.<br />
6. Remove the needle from the assembly by removing the<br />
three screws holding the guide rods to the needle on the<br />
bottom. DO NOT loosen the retaining nuts on the top end<br />
of the slide rods. Pliers may be required to hold the slide<br />
rods while removing the screws. Remove the slide rods and<br />
unscrew the needle from the top needle mount, then<br />
remove the guide and spring.<br />
7. Reassemble in the reverse order. Make sure the needle<br />
assembly is seated against the top mount before tightening<br />
the nut. Align the drain tube fitting with the hose slot and<br />
make sure the slide rods are not twisted. Tighten the gray<br />
guide nut in the middle of the needle assembly until it contacts<br />
the mount. The assembly should still be able to move<br />
with light pressure applied to it.<br />
Note<br />
When reassembling the needle and tower, do not use tools to<br />
tighten the plastic mounting rings. You only need to finger-tighten<br />
them. You can use pliers to tighten the needle into<br />
the top mounting ring, but do not apply excessive force.<br />
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