Figure 18. Silencer
8.1.4Inspection of elements
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CAUTION: TOXIC MATERIAL
Risk of hazardous gases. The tip seal wear product will begin to decompose if
the temperature exceeds 250 °C, giving rise to gaseous fumes that can produce
unpleasant symptoms.
The silencer will be contaminated with the process chemicals that have been
pumped during operation. Make sure that the pump is decontaminated
before maintenance and that adequate precautions are taken to protect
people from the effects of dangerous substances if contamination has
occurred.
Renewal of the elements is recommended regardless of their level of
contamination. Neither element should be heavily contaminated with tip seal
dust, but if either is, they MUST be replaced or cleaned in order to avoid a
build up of dust that may adversely affect performance. Rinse the elements
through with soap and water to clean them. Observe local guidelines to
advise the safe disposal of PTFE dust.
Replacement of elements
Fitting the new elements is the reverse of removal, t the foam block rst and
then the polyester element. Fit both halves of the silencer together and twist
300668736_002_C7 - © Leybold 51
Accessories
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