Hach HIAC PODS, Basic User Manual

Page: 20 / 84

Table 7 Critical errors (continued)
Error Possible cause Solution
Hydraulic
pressure for
online sampling
is not sufficient The hydraulic pressure
source is not sufficient. Make sure that the fluid pressure
is more than 40 psi for all of the
sample period. Make sure that
there are no leaks on the online
adapter O-ring.
High pressure
found An internal hydraulic
regulator failure occurred
or the adjustment setting is
out of tolerance. Contact technical support.
Low pressure The external pressure
source is not sufficient. Make sure that the external air
source is stable and set near
100 psi. Decrease the flow rate,
especially with high viscosity
fluids. Make sure that there are
no leaks on the sample cup O-
ring.
The pick-up tube cap is
installed. Remove the pick-up tube cap.
Pressure
dropped to a
level that is not
sufficient The external pressure was
decreased during the
sample test. Make sure that the external air
source is stable and set near
100 psi. Decrease the flow rate,
especially with high viscosity
fluids. Make sure that there are
no leaks on the sample cup O-
ring.
The sample fluid viscosity
is too high. (PODS only) Decrease the flow rate or dilute
the sample with a suitable clean,
filtered and miscible fluid that will
decrease the sampling viscosity
to within the range of the counter
(10–424 cSt).
There is an internal
hydraulic regulator failure
or adjustment setting that
is out of tolerance. Contact technical support.
Table 8 Non-critical errors
Error Possible cause Solution
SNSR FLOW
CELL ERROR There is a blockage in the
sensor cell within the view area
and the detector does not see
the laser light. Do the cell cleaning
procedure as described in
Remove the flow sensor
blockages
on page 18.
The amount of sample fluid is
not sufficient. Add more sample fluid.
The sensor is out of calibration.
This results in a low signal. Return the unit to the factory
for calibration or repair.
The sample is contaminated
with water or high particle
contamination. Remove the water or try
another sample. If the
sample is highly
contaminated, dilute the
sample.
The laser or sensor electronics
failed. (GlyCount only) Return the unit to the factory
for calibration or repair.
20 English