1 Safe Operation of Remote Controlled Equipment 2

4.2 Machine 
Components 
 
 
The components which are installed on the machine (hydraulic components, wiring, actuators) 
are usually serviced by company maintenance personnel using manufacturers’ manuals, system 
diagrams or other materials for guidance. In some cases, suppliers may provide specialized 
training for maintenance personnel. Prints and schematics should be maintained and updated as 
improvements are made. 

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Safe OperaƟon of Remote Controlled Equipment 15 
As well as standard vehicle maintenance, such as the monthly fire suppression service, 
machines equipped with remote control will require additional attention. To prevent excessive 
heating in electrical circuits, electrical connections to the many solenoids and switches in the 
machines should be opened, cleaned and retightened. Wire insulation, clamps and raceways 
should be examined, cleaned and secured. Some mines recommend this electrical service be 
performed every three months. Brake release mechanisms and boom or load lowering systems 
that may have to be activated if the machine stops and cannot be driven, should be tested 
regularly and as recommended by the manufacturer. Any pre-start warning device and control 
interlocks should be checked and serviced on a regular basis. 
A pre-operational checklist should be performed by the operator to ensure the machine is safe to 
operate. There should be a reporting mechanism in which deficiencies and concerns are 
recorded and passed on to the maintenance department. Accurate records should be kept of 
maintenance work which should include when and what work was done and who conducted the 
work, and for all tests, for the life of the machine. 
4.3 Welding 
 
Welding on a machine may induce current flow which can seriously damage on-board 
computers, radio systems and controllers. The remote control manufacturer’s recommendations 
should be followed in these circumstances. Disconnecting batteries and detaching ground leads 
may be recommended but might require resetting computers and other devices upon completion 
of the work.