10     LS User Manual
3.5  ON-OFF SWITCH
The main power switch is located on the machine base at the rear.  The switch is a rocker type with 
positions O and l. Press O to turn power off.  Press I to supply power to the machine. If the safeline 
button illuminates the switch is open- there is no power to the crosshead motor circuit and the cross-
head cannot move.  Depress the safeline button, the light on the safeline button will turn off meaning 
the switch is closed.  Crosshead movement can now be controlled.  Use the main power switch to 
turn power off when the machine is not required.
3.6  FITTING THE LOAD CELL
Before the machine is powered up, or any test set-ups are entered, the Load Cell should be tted.
Carefully unpack the Load Cell(s) supplied with your machine.  Please make all operators aware that 
they are precision load measuring devices and should be treated with great care.  Please read  
SECTION 4.0 LOAD CELLS before proceeding further.
NOTE:  Load cells are precision measuring devices.  Always handle load cells with  
extreme care to prevent damage.
Safeline Button
When illuminated, the safeline 
switch is open.  There is no 
crosshead movement or motor 
control.  Depress the button to 
close the switch and allow for 
motor and crosshead movement.
Emergency Stop Button
USB Port
Extensometer Interface Connector Load Cell Cable Connector
Hand Held Remote or Main 
Console Connector