0Rc, 520R2C And 520Rec Pumpheads; 520Rc, 520R2C And 520Rec Key Safety Information - Watson Marlow Pumps 521CC Manual

Watson-Marlow Bredel E-Manuals
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12 520RC, 520R2C and 520REC pumpheads

Identification of parts
1 Guard latch
2 Guard (520RC, 520R2C)
3 Track
4 Clutch button cover

12.1 520RC, 520R2C and 520REC key safety information

Before opening the pumphead guard, ensure that the following
safety directions are followed.
 For close-coupled drives, ensure that the pump is isolated from the mains voltage.
 Ensure that there is no pressure in the pipeline.
 Primary operator protection from rotating parts of the pump is provided by the tool-
unlockable safeguard.
Secondary (backup) protection is available in the form of an electrical interlock which

stops the pump if the pumphead guard is opened (and only for so long as the guard is
opened). The electrical interlock on close-coupled pumps should never be used as
primary protection. Always disconnect the mains power supply to the pump before
opening the pumphead guard.
If a tube failure has occurred, ensure that any fluid in the pumphead has been allowed to

drain to a suitable vessel, container or drain.
Ensure that protective clothing and eye protection are worn if hazardous fluids are being

pumped.
5 Rotor cap 9 Pumping roller
6 Tube guide roller 10 Tube clamp slider (520RC, 520R2C)
7 Rotor 11 Tube clamp (520RC, 520R2C)
8 Follower roller 12 Guard with seal (520REC)
13 Drain port (520REC)
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14/12/2009