12.3 520RC, 520R2C and 520REC: pumphead position,
removal and replacement
The pumphead track can be fitted in one of two orientations to provide left or right
input/output port positions, and clockwise or anti-clockwise rotor rotation, whichever is
convenient. Please note, however, that tube life will be greater if the rotor rotates
clockwise; and that performance against pressure will be maximised if the rotor rotates
anti-clockwise.
To reposition the track
Isolate the pump from the mains power supply.
Open the pumphead guard as described under
Opening the pumphead guard
, below.
Remove the rotor as described under
Rotor removal
.
Undo and withdraw the four track-retaining screws using a slotted screwdriver.
Remove the track.
Relocate the track in the desired position. Replace and tighten the track-retaining screws.
Replace the rotor as described under
Rotor replacement
below.
Close the guard, pushing it fully home until the latch engages.
Page 21 of 47
Watson-Marlow Bredel E-Manuals
14/12/2009
file://M:\staging\pdfs-global\m-521-cc-gb-03.htm
