Instructions for the prevention of accidents and damage to equipment when performing servicing, checking and repair operations on fork lift trucks equipped with electronic assemblies 1. Safety measures
3. Correct handling of electronic printed circuit boards When removing or installing electronic mounting boards or when fitting the test adapter ensure that • the electric system is dead (switch off battery main switch and key switch), • the contact pins are not deformed, • the cooling on the multipoint connector corresponds with the coding on the mounting board, • the contacts of the mounting board and multipoint connector are facing each other correctly when there is no coding), • the mounting board is correctly inserted into the guide rail, • a seized mounted board is not removed or installed by force (contacts will be deformed), • Use a tool (brass sockets) for the removal of printed circuit boards which are fitted by means of lugs.
• Observe the operating instructions, section “Repair”. • Remove all rings, bracelets and similar objects before commencing any operations on fork lift trucks. • Repairs, as well as removal and installation of electronic components and fuses must only be performed on a dead system. Unplug the battery plug or disconnect the battery. • Connect the battery and switch on control voltages only, if required for checking operations. Exercise care during all operations (hazard of arcing). • If not instructed otherwise, the vehicle must be jacked up for checking to allow the drive wheels to move freely. (Ensure absolutely that the vehicle cannot slip.) 2. Electric welding operations Before commencing any electric welding operations on a fork lift truck, ensure that all control current plugs and all cable connections have been disconnected from the electronic assemblies, and that all electronic mounting boards have been removed. During electric welding operations on the vehicle, the welding current causes in the cables an inductive voltage with high voltage peaks which is liable to destroy the semi-conductors incorporated in the electronic assemblies.
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