MLS MMLS3, Operator'S Manual

Page: 11 / 48

MLS Test Systems Pty Ltd
Revised: April 2013
9

Press the red STOP button to stop the machine when necessary.

Before using the machine on wet pavements, read section 2 in
Supplementary Manual.

Every 500 000 wheel loads, apply grease to the side walls of the
guide wheels as described under 4.1

Read the maintenance checklist in Appendix C
3.1 Setting the wheel load
The load that is applied to the pavement by the trafficking
wheels can be set by adjusting the suspension springs on the
bogies. The suspension system is designed so that the wheel
load is practically independent of the vertical displacement of
the wheel. It is thus possible to set the wheel load beforehand
and, as long as it stays within the specified displacement range
during operation, rutting of the pavement or vertical displace-
ment of the machine frame will not affect it. This makes it
unnecessary to continuously monitor the wheel load during
operation.
3.1.1 Measuring the wheel load
Refer to fig. 3
The wheel load can be measured or set with the aid of the
calibration unit.
3.1.1.1 Take the calibration unit from its wooden box and unscrew the
50mm diameter flange and the two M10 nuts from the bottom
end of the unit. Mount the unit onto the channel beam on top of
the machine by means of the two M10 bolts. (It may be
convenient to completely remove one of the safety covers by