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PFP7/REV C/01-08
Incorrect filter selected.
Select correct filter.
Flame temperature not correctly set.
Ensure the
fuel
valve is correctly set for the element
being determined, refer to Section 4.2.
7.4
Non-linear results
Possible cause
Solution
Nebuliser blocked.
Check the nebuliser performance as defined in
Section 6.2, Weekly maintenance.
Contaminated deionised water.
Make up new standards in fresh water.
Incorrect dilution or incorrect
calibration standard used.
Prepare fresh dilutions of the calibration standard.
Calibration curves incorrect.
Check the validity of the calibration curves using
fresh standards.
Flame temperature not correctly set.
Ensure the
fuel
valve is correctly set for the element
being determined, refer to Section 4.2.
Instrument not draining adequately.
Ensure the “U” tube is clear of blockages and that
the drain trap is at the correct level.
7.5
Flame will not light
Possible cause
Solution
Drain “U” tube empty.
Fill with deionised water.
Fuel cylinder empty or regulator
pressures incorrectly set.
Replace cylinder or reset regulator.
Inadequate air supply.
Check air connection to the rear panel and the
operation of the compressor.
Propane/butane fuel restrictor blocked. Carefully “blow out” the restrictor. Do not use wire to
clear the blockage as this will result in damage to
the restrictor.
No ignition spark.
Igniter lead disconnected. Refit.
Flame not detected by the sensor.
Reposition the sensor.
Ignition electrode worn or bent.
Straighten electrode or replace with a new part set
to the correct length.
7.6
No electrical power
Possible cause
Solution
AC supply not fully engaged.
Check the power lead is correctly inserted.