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Decommissioning
8
Decommissioning
8.1 Shutting down for longer periods
Before shutting down the pump, observe the following procedure and adequately
protect the pump system against corrosion:
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Switch off pump.
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Change operating fluid
.
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Start the pump and allow the pump to warm up.
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Fill up the pump with new operating fluid to the top edge of the sightglass.
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Close vacuum flange and exhaust flange with locking caps.
8.2 Restarting the pump
Visually inspect the inner of the pump before taking it into operation. If there is ev-
idence of rust on the parts of the pump which form the housing then do not take it
into operation and contact Pfeiffer Vacuum Service.
Depending on how long the pump is taken out of operation, it may be necessary
to replace the radial shaft sealing rings. With reference to DIN 7716 and the manu-
facturer's specifications we recommend replacing the installed elastomer parts af-
ter 2 years.
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If drying pearls were inserted then they should be removed now. Improper
handling can cause failure of the pump.
8.3 Disposal
Products or parts thereof (mechanical and electrical components, operating fluids,
etc.) may cause environmental burden.
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Safely dispose of the materials according to the locally applicable regulations.
CAUTION
Emission of operating fluid!
Danger of the operating fluid being emitted at the exhaust flange if overfilled.
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Drain the operating fluid to the normal level before restarting the pump.
