Watson-Marlow SPS - Manual (Page 50)

MasoSine SPS sinusoidal pumps User Manual 50
l Hold the rotor vane in the slot of the gate, with the larger diameter end of
the rotor bush away from you. Position the rotor, the gate and the gate guide
together. Push the assembly into position. The gate and gate guide slide freely
into their channel; the splines within the rotor hub must be aligned with the
shaft splines.
l Ensure that the rotor is pushed all the way home.
Fitting the rotor, the gate and the gate guide
l Check that the rotor O-ring is in position.
l Position the gate within the gate guide and hold as one unit.
Check that the gate and gate guide are correctly oriented for the
desired sense of rotor rotation. This is critical for
proper operation.
SPS 100 pumps
The gate and
gate guide oriented for
clockwise rotor rotation
The gate and gate guide orient-
ed for counter- clockwise rotor
rotation
The rotor
This end
in first
Note gate orienta-
tion
within the
guide
The gate and gate guide inverted to
show the gate’s position within the
guide for counter- clockwise rotor
rotation
Pressure
side
Suction
side
Suction
side Pressure
side