Mettler Toledo PJA434 Série Guide De L'utilisateur page 16

Place the load centrally across the forks. Do not place
the load eccentrally across the forks.
Because the steering wheels are mounted in the front,
near the terminal housing, pulling the scale is preferred
above pushing it.
When the unit is not being used, lower the forks to their
lowest height and place the control lever in neutral
position.
Avoid abrasive and wear processes.
Avoid falling loads, shocks and lateral impacts.
10 Operation​ ​ Pallet Truck Scale