Watson-Marlow 521CC - Manual (Page 26)

13.4 520REC element loading
520RE tubing element pumpheads are factory-set to accept Watson-Marlow 2.4mm-wall
tubing elements. Elements fitted with either quick-release industrial connectors or Tri-clamp
sanitary connectors may be used; however, it is vital to match the pressure rating of
the element with the pressure rating of the pumphead so that the correct roller-
springing and occlusion settings are used. The pressure rating of the pumphead appears on
the flexible rotor cap in the centre of the rotor. The pressure rating of the element appears
on the connector sleeve.
Note that the rotor cap and the element connector sleeve are colour-coded.
Note: To achieve 4 bar and 7 bar pressures using a 520RE pump and the appropriate rotor
and element, the pump must rotate counter-clockwise.
Element and rotor pressure ratings
Colour of flexible rotor cap and element connector sleeve
Grey Beige Blue
520REL
Pressures
up to 2 bar (30 psi)
Bore sizes
3.2mm, 6.4mm and 9.6mm
520REM
Pressures
up to 4 bar (60 psi)
Bore sizes
3.2mm and 6.4mm
520REH
Pressures
up to 7 bar (100 psi)
Bore size
3.2mm
Industrial
Marprene TL
Pumpsil
Neoprene
ChemSure
Sanitary
Bioprene TL
Pumpsil
Sta-Pure
ChemSure
Industrial
Marprene TM
ChemSure
Sanitary
Bioprene TM
Sta-Pure
Industrial
Marprene TH
Sta-Pure
Sanitary
Bioprene TH
Sta-Pure
Element connectors for industrial and sanitary use
Industrial Sanitary
Check that the conical connector sleeve of the element to be fitted is the
same colour as the pumphead rotor cap
Page 26 of 47 Watson-Marlow Bredel E-Manuals
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