Serinus® 10 User Manual 3.2
Faulty heater or
temperature sensor
Check that the instrument is not overheating.
Possibly a faulty power supply.
Electrical issue component shorted to ground.
Corrupted firmware, perform a ‘erase all settings’
in the Bootloader Menu and reload or upgrade
the firmware.
Adjust the display contrast by pressing one of the
two scrolling buttons on the front panel while in
the home screen:
Press Up scrolling button () for lighter.
Press Down scrolling button () for darker.
Verify that the power supply is providing the
correct DC voltages: +12 V (TP34), -12 V (TP23),
+12 V (TP40) & +5 V (TP39).
Check the interface cable between the display and
the Main controller PCA.
Bad display or Main
controller PCA
Replace the front panel.
Replace the Main controller PCA.
Bad cables are unlikely, but if user suspect it,
perform a pin-for-pin continuity test using an
ohmmeter.
Verify that the mains power cable is connected and
the chassis fan is operating.
Sample Pressure
too High or Low
Loss of pressure
calibration
Perform a pressure calibration (refer to
Section 5.3).
Ensure particulate filter has been recently
changed.
Ensure tubing is not kinked or blocked.
Ensure vacuum pump is correctly installed and
operating.
Sample Flow not equal
to 0.5 slpm +/-0.05
External pump model
only.
Check/replace sample filter.
Check pump.
Check valves.
Check/replace sintered filter.
Re-calibrate pressure sensors.
Unstable Flow or
Pressure Readings
Faulty pressure sensors
Flow blockage between
cycle
Check pressure calibration.
Check calibration valve block is functioning and not
blocked. If unable to diagnose problem, check
voltage across TP1 and TP2 of pressure PCA ensure
it is about 4 ± 0.3 V. It may be a noisy A/D
converter, replace main controller PCA.
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