Step 1 - Fitting the sink bush assembly (See Fig. 1c-Stage 1).
1. Remove the sink bush assembly from the unit by fi rst loosening the three-nuts (9), and
twisting the assembly clockwise in the hopper fl ange keyholes.
2. Slacken off the three-grub screws (7), suffi ciently to push the Suspension Plate (5), up the
Sink Bush (1), to enable you to prise off the circlip (6). The removal of the circlip will then
enable you to slide off all the components from the sink bush, with the exception of the Inlet Gasket (2).
3. Position the sink bush, complete with inlet gasket, in the sink waste outlet hole.
4. Check that it is at least fl ush with the sink bowl surface, and that the sink bush fl ange has a good
seating. Some sinks have contours around the outlet area that does not allow positive sealing that
would ensure that the inlet gasket works effectively. In such cases the inlet gasket may be omitted, and
substituted by a liberal layer of plumbers putty.
5. When setting the sink bush into the sink, line up the print of the sink bush fl ange, so that the line with
the arrowhead and the word “GRIND” is positioned at 9 o’clock relative to the front of the sink unit.
Note on examination of the sink bush, that there is a protruding ‘pimple’ on the side of the bush
immediately underneath the grind line. This plays a signifi cant part in the assembly procedure.
6. From the underside of the sink, position the lower waste inlet gasket (3), followed by the clamp plate (4)
ensuring that the clamp plate is the correct way up (when the outer edge is turned downwards).
7. Push the suspension plate up also onto the sink bush as far up as you can, to reveal the
groove around the sink bush that holds the circlip.
8. Push the circlip up the sink bush until it snaps into the groove.
9. You may now release the suspension plate and allow it to rest on the circlip.
10. Rotate the suspension plate until the notched hole in the edge of the plates upper rim is located
around the pimple on the sink bush.
11. Tighten up the grub screws a few turns to each in rotation so that the suspension plate
remains parallel to the clamp plate.
12. Finally, tighten with a screwdriver. Do not overtighten the grub screws, as this will cause
distortation of the Suspension Plate. You will have observed that the positioning at the “GRIND”
line printed on the top face of the bush determined the position of the grub screws such that
they in turn dictate the position of the disposer when it is attached.
Installation Instructions
Westminster model only
16
CLAMP
PLATE
SUSPENSION PLATE