520Rc, 520R2C And 520Rec: Pumphead Position, Removal And Replacement - Watson Marlow Pumps 521CC Manual

Watson-Marlow Bredel E-Manuals
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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.

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14/12/2009