Xylem OxiTopIS OC100 - Manual (Page 88)

What to do if...? What to do if...?
88 BA31114e5 07/2006 BA31114e5 07/2006 89
Messages Explanations, causes and problem solutions
10 of 12
called up
(sample message,
no. is variable)
Cause:
• Two measuring heads have not been found by the
controller
• The measuring heads are positioned at another location,
e.g. other levels in the incubator, other incubators,
further storage positions
• The measuring heads have no optical contact with the
controller:
- Distance too great, angular position imprecise
- IR window of the measuring head averted from the
controller
- Shading by other objects.
• The missing measuring heads are defective
Problem solutions:
• Modification of the distances or angle
• Search other storage locations
• Search for and check measuring heads (see section
“Requirements/Problems“)
0 of 19
called up
(sample message,
no. is variable)
Cause:
• No measuring head has been found by the controller.
• The measuring heads are positioned at another location,
e.g. other levels in the incubator, other incubators,
further storage positions
• The measuring heads have no optical contact with the
controller.
- Distance too great, angular position imprecise
- IR window of the measuring head averted from the
controller
- Shading by other objects.
• The controller is defective.
Problem solutions:
• Modification of the distances or angle
• Search other storage locations
• Check the controller (section “Requirements/Problems“)
Requirements / Problems
Requirements /
Problems Procedure / Problem solutions
No or missing samples
in the sample
management Cause:
• You started samples in the operating mode „BOD
Standard“. Then you switched over to the operating
mode „BOD Routine“.
Problem solution:
• Switch the instrument to the operating mode „BOD-
Standard“ (see chapter GLP/Tools - Settings - Operating
mode).
At the beginning of the
measurement, no
measurement curves
are displayed
Measurement curves
does not emerge from
the origin
Causes:
• The sample filled and started was too cold.
• AutoTemp function is switched off.
Problem solution:
• Temper the sample more precisely.
• Switch on the AutoTemp function (only effective for
measuring times longer than one day).
No measurement
curves are displayed
although the
measurement has
already been running
for an extended period
of time Causes:
• No data was retrieved from the measuring heads.
• The AutoTemp phase is still running
(see the chapter ”AutoTemp function in greater detail“).
Problem solution:
• Call up the data of the measuring heads.
See chapter “Call up all data“.
• Wait for the end of the AutoTemp phase then start the
evaluation.
Search for free
measuring heads for a
new measurement Procedure:
Perform the function “Show free
“
(see chapter “GLP/Tools”).
The controller causes the free measuring positions to flash
for 5 seconds.