Watson-Marlow SPS - Manual (Page 38)

MasoSine SPS sinusoidal pumps User Manual 38
l If this dimension is not correct, use a wrench to loosen and remove the screws
securing the bearing housing to the power frame (arrowed; the number of screws
varies with pump model).
For SPS 200:
13mm wrench
For SPS 250: 13mm wrench
For SPS 300: 16mm wrench
For SPS 400: 18mm wrench
For SPS 500: 18mm wrench
l Remove the bearing housing and the pump shaft, being careful not to damage
lip seals (arrowed).
l Remove the shim ring (arrowed) and install a new one between the power
frame and the bearing housing. Reassamble, tightening the bearing housing
retaining screws as follows:
For SPS 200 M8: 16 Nm
For SPS 250 M8: 16 Nm
For SPS 300 M10: 33 Nm
For SPS 400 M12: 56 Nm
For SPS 500 M12: 56 Nm
and measure dimension X again.
l If this dimension is not correct (see table), disassemble and peel layers from
the shim ring equal in total thickness to the difference between the re-meas-
ured distance and the correct distance, so that the correct dimension X is
achieved. One layer is 0.05mm thick.
l Reassemble.
SPS 200,
SPS 300,
SPS 400 pumps