5.4.2 Hydraulically Operated Machines

Hydraulic machines (Figure 5.4.2-1 ) are based on the same mechanical principle of operation as the manual type but with the addition of an integral hydraulic mechanism to provide power operation. The hydraulic system is of piston and cylinder design, the piston rods being directly connected to the forward and reverse operating handles. These machines may be used singly or ganged (Figure 5.4.2-2 ) with the addition of a purpose designed hydraulic system approved by the Competent Person or manufacturer.