Maintenance; Scheduled Maintenance - Watson Marlow Pumps 620RA Serie Manual Del Usuario

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Maintenance

Explosion hazard. Failure to comply may cause severe or even fatal
injuries.
All work, e.g. transportation, storage, installation, connection,
commissioning, servicing and maintenance must be performed in a
non-explosive atmosphere.

Scheduled maintenance

The stainless steel pumping rollers run on sealed bearings and do not require lubrication.
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If fluid is spilled inside the pumphead, flush the pumphead out with water and mild detergent as
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soon as possible. If specific cleaning agents are required to clean the spillage, please consult Watson-
Marlow Technical Support Office before proceeding, in order to confirm chemical compatibility.
All pumpheads should be inspected weekly for any damage, and to ensure no debris is present
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inside the pumphead or pumphead guard latch mechanism.
Because of the importance of dissipating any electrostatic charge the earthing lead should be
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regularly checked for signs of corrosion.
If the rotor needs to be removed, refer to the guidelines below.
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Rotor removal
Open the pumphead guard using a 5mm Allen key
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Remove the rotor cap
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Unscrew the rotor screw using a 5mm Allen key
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Pull the rotor off the keyed shaft, remove the key and clean thoroughly. Do not use tools to lever the
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rear face of the rotor away from the inner face of the track; it should come off by hand.
1.
4.
For instructions on replacing the rotor See "Fitting the rotor" on page 13.
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2. 3.
PB0347:m-620atex-en-03