SciCan STATIM 2000 Service Manual page 202

9. Solenoid Valve and Pressure Transducer
TIP:
It is always wise to check the pressure transducer tube for blockages at this time as this
may be the source of an incorrect pressure reading or slow transducer response. If the tubing is
discoloured, kinked, or of there is debris visible in the tubing, remove the tubing completely for
cleaning or fit a new tube.
Now check and record the following values:
Set a multimeter to 'DC volts' and check the reading across the terminals of the BLUE P1-1
'SIG' (signal) and BLACK P1-3 'GND (ground) wires leading from the pressure transducer at their
terminations on the main PCB (Revision 7) or the interface board (all other board revisions).
If the transducer is working to manufacturing specifications, the display pressure and reference
pressure should be within +/- 4 kPa of each other and the multimeter voltage reading should be
close to the value on the chart (Figure 5) taking into account the accuracy/calibration status of the
multimeter.
If the voltage readings vary significantly then the electronic components of the transducer may be
failing or have failed.
If the pressure readings vary significantly then the mechanical components of the transducer may
be failing or have failed.
The pressure transducer is not a serviceable component. It is critical to ensuring the correct
conditions occur in the unit during sterilization. If failure has occurred or potential failure is
suspected, replacement is recommended.
NOTE:
re-calibrate the unit fully if in doubt.
Page 200
Compare the reference pressure and the display pressure.
Compare the voltage reading from the multimeter against the voltage value on the chart
above for the relevant pressure reading of the display.
Do not forget to reset the pressure transducer offset back to the original setting or,
STAT IM 2000/2000S
STATIM 2000/2000S/2000 G4 Service Guide
96-108639 Rev 3.0
Service Guide