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b)
On depressing the START button, the "eye" will glow brightly.
c)
An unlit "eye", indicates that the machine has either "timed out" or the
safety cover isn't fitted.
3.
PREPARING SPECIMENS.
3.1
Sand, Cement, and Mortar Specimens are now considered obsolete.
3.2
Resin Specimens - It is essential to retain the Metal Backing Plate firmly
clamped to the mould until the resin has completely cured. Premature
withdrawal will allow the specimen to lift at the ends and from a radius smaller
than that required to match the mounting surface of the wheel, with a resultant
cracking of the specimen and uneven running of the tyre.
3.3
Further information on the preparation of specimens is detailed in BS EN
1097-8:2000.
4.
MOUNTING SPECIMENS ON THE ROAD WHEEL.
4.1
Remove the Road Wheel from the machine using the 17mm Hexagonal
Socket Wrench. Lay the Road Wheel flat on a firm level surface. With the
6mm Hexagonal Socket Wrench, withdraw the 6 socket cap retaining screws
securing the Front Clamping Ring. Note: There are 3 'Jacking' holes provided
in this ring to facilitate easy removal.
4.2
Place a rubber ring over the Road Wheel periphery and locate the specimens
into the Rear Clamping Ring. Lift the rubber ring to locate it between the
specimen and the chamfer machined on the outer diameter of the clamping
ring locating groove. Tie a cord around the periphery of the specimens to hold
them tight to the wheel.
4.3
Place the second rubber ring over the specimens and fix the Front Clamping
Ring to the wheel. Check that this rubber ring is correctly located and that the
specimens are correctly seated. Tighten the 6 socket cap fixing screws and
remove the cord.
4.4
The specimens should now be held firmly without any damaging pressure
exerted. Ensure that a true running surface has been obtained.
4.5
Mount the Road Wheel on to the machine Main Spindle and lock the
Retaining Disc and Screw into position, using the 17mm Hexagonal Socket
Wrench.
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