Watson-Marlow SPS - Manual (Page 36)

MasoSine SPS sinusoidal pumps User Manual 36
l If this dimension is not correct, continue disassembly (see 22 Dismantling and
assembly) until the face of the power frame is accessible (the SPS 300 and the
SPS 200 pumps are shown here; the SPS 400 is similar).
l Use a 6mm Allen key to loosen and remove the bearing housing retaining
screws and copper washers (arrowed; the number of screws varies with pump
model.)
l Remove the bearing housing and the pump shaft, being careful not to dam-
age the lip seals (arrowed). Note: lubricating oil will spill out as the bearing
housing is removed.
l Remove the shim ring (arrowed in the three lower pictures) and install a new
one. Reassamble, tightening the bearing housing retaining screws to 25Nm
(SPS 200) 50Nm (SPS 300) 35Nm (SPS 400), 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-measured 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