Watson-Marlow SPS - Manual (Page 80)

MasoSine SPS sinusoidal pumps User Manual 80
l Pull the front liner to remove it.
Note: You may find it convenient to turn the pump shaft and rotor a little to create
space for your fingertips to grasp the top of the front liner.
Removing the front liner
It is important to ensure that the shaft cannot rotate while the shaft locking screw
and the shaft nut are removed. It may be convenient to secure it using a well-padded
wrench on the shaft and the key or keyway. A blocking tool for the shaft is option-
ally available for easy opening of the locking screw SPS 250: TL-SP21-010-31, SPS
300: TL-SP25-010-31, SPS 400: TL-SP40-010-31 and SPS 500: TL-SP50-010-31)
l Use the 42mm ring spanner supplied with the pump to remove the locking
screw from the shaft (left-hand thread).
l Use the 42mm ring spanner supplied with the pump to remove the shaft nut
from the shaft (right-hand thread). It will leave the shaft with the front sup-
port.
l You can now access the rotor front O-ring (arrowed) in its groove in the rotor
front.
Removing the shaft locking screw and the shaft nut
SPS 250, SPS
300, SPS 400
and SPS 500
pumps