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12 520RC, 520R2C and 520REC pumpheads
Identification of parts
12.1 520RC, 520R2C and 520REC key safety information
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.
1
Guard latch
5
Rotor cap
9
Pumping
roller
2
Guard (520RC, 520R2C)
6
Tube guide roller
10
Tube clamp slider (520RC, 520R2C)
3
Track
7
Rotor
11
Tube clamp (520RC, 520R2C)
4
Clutch button cover
8
Follower roller
12
Guard with seal (520REC)
13
Drain port (520REC)
Before opening the pumphead guard, ensure that the following
safety directions are followed.
Page 19 of 47
Watson-Marlow Bredel E-Manuals
14/12/2009
file://M:\staging\pdfs-global\m-521-cc-gb-03.htm