Replacement Parts And Accessories - Hach Lachat QuikChem In-Line Module Manual Del Usuario

Table 3 Troubleshooting guide (continued)
Problem Solution
Poor recovery of a QC sample Make sure that the reagents are made fresh.
that consists of complex-
Make sure that sample flows through all pump
cyanide
lines.
Make sure that the temperature agrees with
the QuikChem method.
Look at the small hole on the top of the
instrument to see if the UV lamp is turned on. If
not, replace the lamp.
Poor or no recovery of a QC Examine the pump tubes for flow.
sample
Examine the temperature setting.
Make sure that the reagents are made
correctly.
For the cyanide determination, make sure that
the acid line is put in the digestion solution.
Examine the pump tubes for the acid, the
sample and the acceptor.
Read the QuikChem method notes to learn
more about the expected recoveries.
Table 3 Troubleshooting guide (continued)
Problem Solution
Air flow though the diffusion Make sure that there are no blockages or
block gets very fast, then slows crimps in the reagent and samples tubing.
almost to a stop
Make sure that the waste tubing flows freely. If
not, there is excessive back pressure.
Make sure that the instrument waste goes into
a waste container that is applicable for that
solution. Make sure that the tubing is above
the liquid level and that the container is vented
to prevent pressure inside the container. To
prevent cavitation and vapor lock, the waste
container must be at the same level as the
instrument.
Examine the reagent and water bath tubing for
plugs or crimps. Small dirt particles or algae
from a dirty water bath causes flow problems.
Imprecision when running Examine the timings in
replicates on page 11.
Replace the bubble trap membrane.
Make sure that all pump tubes are in good
condition and that there is good liquid flow.

Replacement parts and accessories

W A R N I N G
Personal injury hazard. Use of non-approved parts may cause
personal injury, damage to the instrument or equipment malfunction.
The replacement parts in this section are approved by the
manufacturer.
Note: Product and Article numbers may vary for some selling regions. Contact the
appropriate distributor or refer to the company website for contact information.
Find the correct timing
English 17