Ion Science SF6 P1:p - Manual (Page 16)

SF6 P1:p MANUAL Ion Science Ltd
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Operation
The following error messages can occur:
LOW SAMPLE FLOW
(low intake air flow)
When blocking the air intake opening of the sensor totally or partly, an error message is produced requesting
the operator to check the condition of the sensor.
Two buttons are available to confirm this error message:
[ RESTART ] requests the instrument to try and resume measurement operation. For this, the operating vacuum
is controlled anew. If unsuccessful, then the error message will appear again after a short while.
[ POWER DOWN ] switches the instrument off so as to allow the sensor to be replaced.
The selection can also be performed through the buttons of the handset. Corresponding symbols are
displayed in the buttons on the screen.
TOO MUCH GAS (failure of the discharge in the SmartSensor)
For this kind of malfunction there are two possible causes:
1. a very high concentration of detectable gas,
2. an operating vacuum which is too high due to a worn out or partially blocked SmartSensor. Since the
quantity of taken in air is maintained at a constant level, a reduction in the air flow through the filter or
the intake opening will result in an increased operating vacuum. When the operating vacuum is found to
be much increased, the discharge in the SmartSensor becomes unstable and can fail.
3. A malfunction in the SmartSensor caused by contamination within the ionization chamber can also
cause the discharge to fail.
The operator is then requested to remove the SmartSensor from the possible gas source and confirm this by
pressing a button. After having acknowledged the condition, the discharge is, if possible, reignited and
controlled. If this is unsuccessful or if the error message appears without any apparent reason, then please
replace the SmartSensor.
PUMP RATIO HIGH (overloading of the suction pump)
This error condition is detected when the suction pump must run significantly more frequently or longer than
expected so as to maintain the operating vacuum. The reason for this can be a leak in the pneumatic system
of the leak detector or a malfunction affecting the suction pump. Since in any case the reliability of the
measurement is endangered, the options [ DIAGNOSTICS ] (change to the diagnosis screen) or [ POWER
DOWN ] (shut down) are offered to the operator.
LOW BATTERY VOLTAGE
If without a mains power connection being present, the voltage of the rechargeable battery reaches the total
discharge level threshold, the user is informed as to the imminent shutdown. If no mains power is available,
operation can be continued for a short while, however, from now on the instrument may shut down itself at
any time so as to avoid damaging the rechargeable battery.