Watson-Marlow 520Du - Manual (Page 83)

Watson-Marlow 520Du User Manual 83
28.1 Pumphead position, removal and
replacement
The pumphead track can be fitted in one of three orientations to provide right, up
or down input/output port positions, whichever is convenient. Position the pump-
head so that the tube ports face up or down only where the drive is placed on the
bench edge - otherwise the pump tube or the hinged guard will impact the bench.
Do not position the pumphead so that the tube ports face the keypad. Doing so may
result in a safety risk.
The pump can be configured for clockwise or counter-clockwise rotor rotation. 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 counter-clock-
wise.
To reposition the track
Open the pumphead guard as described under 29.1 Opening the pumphead
guard, below.
Remove the rotor as described under Rotor removal, below.
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-retain-
ing screws.
Replace the rotor as described under Rotor replacement below.
Close the guard, pushing it fully home until the latch engages.
Always isolate the pump from the mains power sup-
ply before opening the guard or performing any posi-
tioning, removal or maintenance activity.