User`s manual
62
RECOMMENDED MINIMUM SAFETY DISTANCES TO BE OBSERVED DURING THE
ADJUSTMENT OF THE HOIST-LOWER LIMIT SWITCHES
FOR EMERGENCY HOISTING
All limit switch setting operations and re-setting safety-gaps must be carried out by specialised electricians
authorised by respective section heads.
PLEASE NOTE
When the emergency limit switch is open, it is no longer possible
to operate the crane using the normal controls.
Therefore it is necessary to continue in one of two ways:
· act on the line contactor manually and at the same time
lower the hook a few centimetres;
· by-pass the emergency limit switch contacts temporally and
lower the hook.
· find out why the "hoisting" contact did not work, repair the
fault and re
-
set the limit switch.
LOWERING