Watson-Marlow SPS - Manual (Page 91)

MasoSine SPS sinusoidal pumps User Manual 91
Pumps with a single mechanical seal: fitting the backing ring and
the rear liner
l Push the rear liner into position below the backing ring. The anti-rotation
pins within the pump housing (arrowed) guarantee that the liner is properly
positioned. The two liners are identical.
The backing ring
l Push the backing ring over the pump shaft and over the dynamic ring holder.
The backing ring is reversible.
Pumps with a triple lip seal
See the graphics in section 25.1 and 25.3, and refer to the instructions for the
SPS 200 pump triple lip seal assembly in section 22.3.2. The SPS 250, SPS 300, SPS
400 and SPS 500 are similar.
SPS 250, SPS
300, SPS
400 and SPS
500 pumps
with a single
mechanical seal
SPS 250, SPS
300, SPS 400
and SPS 500
pumps with a
triple lip seal