HS 55 (Batch Mode)
Maintenance and care
41
6.5
Inspecting and replacing the flange seal in the batch module
After an extended operating time, the sealing ring at the head of the batch module may
lose its elasticity and sealing effect and must be replaced.
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Turn the reaction beaker and pull it off the flange.
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Visually inspect the sealing ring on the flange. If then sealing ring is worn, remove it
and replace it with a new sealing ring.
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Slide the reaction beaker onto the flange and turn it to lock it in position.
ü
The flange seal has been replaced.
6.6
Replacing the hose dryer
The hose dryer is functional as long as the surface is not contaminated with particles or
condensate. Always replace contaminated hose dryers. Do not try to clean them.
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Detach the drying hose from the hose section at the outlet marked "to cell" of the
batch module and from the cell hose or the inlet marked "to enr." on the front plate.
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Connect the new drying hose to the hose section at the outlet marked "to cell" of the
batch module and the cell hose.
}
In the "Hg with enrichment" operating mode, screw the second hose end with the
hollow screw to the connection marked "to enr." on the front plate.
ü
The new drying hose is ready for operation.
6.7
Replacing the gold collector
CAUTION
Risk of burns
The gold collector is very hot directly after operation (up to 630 °C).
¡
Allow the gold collector with heating coil to cool before maintenance.
Replace the gold collector
¡
if the sensitivity is significantly decreased during Hg detection with enrichment.
¡
if the signals are highly scattered and the reproducibility decreases.
¡
if the heating value increases.
¡
if the gold collector does not bake out the enriched mercury completely. If this hap-
pens, the measuring intensity is only achieved after several measurements in the
case of large concentration differences.
