Watson-Marlow 313F - Manual (Page 9)

9
313 and 314 pumpheads
The 313F/D, 313S/D and 313U/D can only be fitted with 313 three roller or 314 four roller pumpheads.
The 313 pumphead has three rollers and is designed to provide high flow rates, whilst with four rollers, the 314 pumphead
provides the option of less pulsation and greater pumping precision.
Both pumpheads employ a "clamp and stretch" tube clamping motion which ensures that the tube is held correctly in
position with no unwanted tube slackness.
The flip top track provides easy front end tube loading with no removal of components.
The simple bayonet mounting action for standard and extension pumphead fitting allows easy fast set up of ganged
installations.
Installation
All 313 drives are provided with bayonet plate fittings attached. To fit a 313 or 314 pumphead, align the slot in the
pumphead to the drive tang and using the bayonet fittings, turn the pumphead clockwise and snap into position.
To remove the pumphead push the bayonet plate locking lever back towards the rear of the drive and turn the pumphead
anti-clockwise until it is freed from the bayonet plate fittings.
Flow rates
Flow rates for the 313F, 313S and 313U were obtained using silicone tubing, with the pumphead rotating clockwise at
100rpm, pumping water at 20C with zero suction and delivery pressures (unless otherwise stated). For critical
applications determine flow rates under operating conditions.