— 23.07.2020 —
7.4 Cleaning the spark stand
Warning! High voltage!
If the instr
ument is switched on, there a risk of electrical shock.
Shut down the Plasma generator (excitation unit) during all work on the spark
stand.
Warning! Toxic substances!
The sparking process produces a black
precipitate (metal condensate). The
could be toxic or flammable, depending on the sample material.
Protective gloves and safety goggles must always be worn when cleaning the
spark stand and when cleaning the gas-washing bottle or the filter bott
also applies when replacing the filter insert. If metals with toxic components
have been sparked off, wearing a breathing mask to prevent the inhalation of
condensate particles is mandatory.
When disposing of the condensate, compliance with legal regulations is
mandatory.
Contacting the electrode increases the risk of burn injuries. During normal
operation, the electrode will heat up to several hundred degrees.
Never touch the electrode with your bare hands, even after shutting down the
spectrometer. Always use pliers.
Notice! Instrument damaged or malfunction!
Incorrect cleaning of the spark stand increases the risk of damage to the
instrument or malfunctions during measurements.
following rules during cleaning:
Only use a clean, dry and soft cloth to clean the spark stand.
To clean holes in the spark stand, also use a clean, dry and soft cloth or a
bottle brush with plastic bristles.
Do not use solvents to clean the spark stand. Solvent residues can adversely
affect the function of the spectrometer.
Do not use compressed air (or similar methods) to clean the spark stand. The
use of compressed air could cause the condensate to ignite and/or spread
inside the laboratory.
Do not vacuum the spark stand. The condensate could ignite an unsuitable
vacuu
m cleaner. The exhaust filter of the vacuum cleaner may not be suitable
for the pore size of the condensate.
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