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Burner interlocks are incorporated to minimize the possibility of using the wrong
burner. Never interfere with or attempt to bypass any interlock fitted to this
instrument.
To minimize the rate of burner blockage, the burner slot must be cleaned and
polished as described in the Burner chapter–Page 116.
Nebulizer
Incorrect assembly and fitting of nebulizers to an atomic absorption spectrometer
can create explosion hazards and fire hazards which can cause serious injury to
personnel and damage to equipment and property.
Ensure that the nebulizer is correctly assembled and correctly fitted to the spray
chamber before lighting the flame. Nebulizers should be correctly adjusted before
lighting the flame.
Never remove a nebulizer while the flame is on, and do not use a mechanical
device (e.g., a wire) to clean the capillary of a nebulizer while a flame is operating.
ALWAYS extinguish the flame before removing the nebulizer from the nebulizer
block.
Regularly test all connections for leaks. Rectify all leaks before lighting the flame.
Agilent 55B AA Spectrometer User's Guide
Never allow burners to become blocked. Progressive burner blockage can
increase the static pressure in the liquid trap to the point at which the liquid
seal is breached. This can cause a flashback and create an explosion hazard
or a fire hazard.
Never allow carbon to build up on the slot, as glowing particles can dislodge
and fall through the slot, thus causing a flashback.
Always turn the flame off before attempting to clean the burner slot.
Never leave a flame unattended.
Never disassemble, modify, or ill-treat a burner.
Ensure Table 9. Maximum allowable burner slot width is never exceeded – see
Page 121.
Safety Practices and Hazards
25
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