Hach 900 MAX - Manual (Page 31)

Section 2
Page 29
8990hrd.fm Installing the Distributor (Multiple Bottle Operation)
Figure 12 Eight-, 12-, or 24-bottle Configuration
2.6 Installing the Distributor (Multiple Bottle Operation)
Note: Make sure the sampler is
powered off before removing or
installing the distributor. For multiple bottle sampling, a motorized arm (Distributor) is provided to
automatically position the sample tube over the proper bottle. The
microprocessor-controlled distributor arm can automatically locate two, four,
eight, 12, or 24 discrete bottles.
To install the distributor:
1. Locate the two slots along one edge of the distributor assembly base
plate (
Figure 14 ). Slide the distributor assembly, slots first, under the
shoulder screws located on the top inside surface of the controller
section.
2. When fully seated, hand tighten the knurled thumbscrew to hold the
distributor in place.
3. To ensure the arm has sufficient freedom of movement, hand-rotate the
arm to the opposite end of the Arm Stop.
4. Install the silicone distributor tubing to the sample fitting on the top
underside surface of the controller housing.
Note: Use care not to force the arm past the Arm Stop clip. The Arm Stop keeps the
arm from being rotated more than 360 degrees and keeps the distributor tubing
from kinking.
The distributor tubing should be installed so that the end of the tubing extends
out of the nozzle end of the distributor arm no more than
1 / 8 in. ( Figure 13 ). Do
not let the tubing extend more than 1 / 8 in. past the nozzle end of the arm.
1. Distributor 2. Retainer 3. Bottles and Bottle Tray
2
1
3