OPERATING INSTRUCTIONS RH 90 C E Inspection and servicing After inspection and maintenance, the following works must be performed:
On the hydraulic excavator  Disconnect the earthing and short-circuiting line (8, Fig. 3-4:): from the earthing points (2, 3 and 4) by means of extension (5) from the fixed point (1)  Withdraw the partition (6, Fig. 3-5:)  Refit the cover (1, Fig. 3-6:). Fig. 3-6:
In the transformer station  Disconnect the earthing and short-circuiting line  Unlock the safety device preventing switch-on; remove the warning sign  Remove the partitions  Switch on the supply voltage Fig. 3-4:
On the hydraulic excavator  Unlock the safety device preventing switch-on; remove the warning sign  Cut out the switch-disconnector (see the " Switching off the circuit breaker " chapter in part 2 of the present operating instructions)
Fig. 3-5:
3-4
BA RH90C(3 720 760.00)-EN
