6
Procedure for triggering the gripper
4
Procedure for triggering the gripper
The gripper may be triggered, in particular with higher towers (hub height over 80 m), if:
à
Lift movement due to the elasticity of the suspension cable while starting or stopping (stop-and-go move-
ment) is incorrectly detected at the safety cable as lift movement at an excessive speed.
In this case, the gripper can be recommissioned. For this purpose:
X
Open the gripper manually or through a short upward movement using the hand crank and the brake venting
lever.
X
Document the catch in the inspection plan.
If an upward movement is not possible (e.g. due to suspension device breakage, lack of traction, damaged sus-
pension cable or similar malfunction causes) or if the gripper is triggered again:
X
Send the gripper to the manufacturer to be examined in accordance with the specifications of the manufactur-
er (see original operating instructions of the service lift and gripper).
X
Do not commission the service lift again until the cause of the fault has been verifiably eliminated.
X
Tick the "Catch" field in the inspection plan, document it separately and inform the operator and manufacturer
of the service lift.
5
Fitting seals
5.1 Seal on the winch
X
Clean the area around the opening for overload
setting with alcohol (or similar).
X
Fit the seal over the opening for overload setting.
5.2 Control box sealing
X
Clean the area with alcohol (or similar).
X
Fit the seal on the control box.
