PRECAUTIONS TO BE TAKEN DURING WORK 2.4.3 HAND SIGNALS q When it is necessary to position loads, make excavations or move the machine with a reduced field of vision, the operator must be helped by another person (signalman) who should stand on the ground and give signals to indicate the manoeuvres to be carried out according to the specific instructions provided for by the relevant regulations. q No movement or operation may be carried out if the signals have not been clearly understood by the operator and the signalman.
q When additional instructions different from those defined by the hand signalling system are necessary, these must be agreed upon by the two operators before starting the job. q Only one person must be entrusted with giving signals. q The operator must make sure that the signalman is always within his field of vision and follow all his signals. The use of hand signals serves to direct the lifting, handling and positioning of the loads lifted by the work equipment. Hand signals can also be used during digging operations or when the machine travels, if the field of vision of the operator is reduced.
The direction of movement of the hands and arms in relation to the machine must define the signal, independently of the position of the signalman. Hand signals must be given following the indications below. 1 - LIFT THE LOAD VERTICALLY One forearm in vertical position and forefinger pointing upwards: turn the hand making small circles. 2 - LOWER THE LOAD VERTICALLY One arm down and forefinger pointing downwards: turn the hand making small circles. 39 WARNING