multi EA 5100
Maintenance and care
155
14.13 Maintenance of the coulometric sulfur detector
CAUTION
Risk of injury
A risk of injury due to broken glass is present when handling glass parts.
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Handle glass parts with extreme caution.
14.13.1 Replacing the absorber
CAUTION
Skin and respiratory system irritation due to quartz wool
Quartz wool tends to form dust. Irritation can occur after breathing in or skin contact
with this dust.
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Avoid the formation of dust when working with quartz wool.
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Wear protective clothing and gloves.
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Work under an extractor or wear a respiratory mask.
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Check the absorber once per week. Replace the filling if necessary.
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Replace the filling of the NOx absorber if the color has turned from light green to
yellow or light brown.
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Replace the filling of the HX absorber if the color has turned from metallic silver to
dark gray.
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Remove the hose connection of the absorber tube.
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Remove the absorber tube from the clamps.
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Disconnect the FAST connector from the tube on one side. Remove the quartz wool
plug.
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Remove the use filling from the tube.
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Fill fresh absorber material (silver wool for the HX absorber, ammonium iron(II) sul-
fate for the NOx absorber) into the tube. Reinsert the quartz wool plug. Connect the
FAST connector.
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Carefully place the absorber tube back in the clamps.
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Connect the hoses to the absorber tube.
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The detection module is ready for operation again.
