Sentec SDM - Table 5 Example of a Troubleshooting Procedure

4 Troubleshooting
SenTec Digital Monitoring System
45
Table 5 Example of a Troubleshooting Procedure
Problem
Possible cause
Recommended action(s)
Trouble
shooting level
P0XXX
PCO2
too low
Wrong/instable
barometric pressure
during calibration
Verify that the barometric pressure reading of the
SDM is stable during calibration and does not
deviate from a known calibrated reference
barometer by more than 5 mmHg (0.7 kPa).
Otherwise contact qualified service personnel.
a
(operator)
SDM defective
If problem persists contact SenTec authorized
service personnel.
b
(qualified
technician)
MPB
(Multiparameterboard,
SM1A) defective
Replace MPB according to section 5.16.
To be performed by SenTec
authorized service technicians only.
c
(SenTec
authorized
technician)
PCO2 sensitivity of the
sensor too low
Test the PCO2 sensitivity (see section 3.1.8 PCO2
/ PO2 Sensitivity & Calibration Duration).
If the test is not passed, remembrane the sensor
and repeat the test.
After a renewed missing of this difference, consult
qualified service personnel.
a
(operator)
Clean the sensor as described in section 3.1.7
Cleaning / Inspecting without Membrane and
perform the `Sensitivity Test´ as described in
section 3.1.8.
If problem persists contact SenTec authorized
service personnel.
b
(qualified
technician)
SenTec TC Sensor
defective
If problem persists the sensor is defective. Replace
it by original replacement parts.
To be performed by SenTec
authorized service technicians only.
c
(SenTec
authorized
technician)