What is HOP on an LS60 and How Do I Test It?
The hydraulic overload protection system or HOP for short helps prevent conditions that can structurally overload the booms. At approximately 105% of rated hydraulic capacity, the HOP system should engage – stopping the functions that cause the overload.
The HOP protects:
- Winch raise
- Jib raise
- Boom lower
- Boom extend
How to test the HOP on an LS60
If activated, the load indicator will register in the HOP Red Zone of the gage. The overload condition can be reduced by reversing the function that engaged the HOP system. When the overload condition is relieved HOP is reset and all functions are active again.
With the unit properly set up and the booms out of stow, press the HOP test switch to activate HOP. Perform winch raise, jib raise, boom lower and boom extend functions.
If any of these functions are operational the HOP system is not working properly.
Altec Sentry offers training designed to help employers train and qualify equipment operators on the safe and proper operation of aerial devices (insulating, non-insulating and tree care), digger derricks, chippers, and cranes.
Visit Sentry’s website to access operator safety and maintenance courses for many of our products. For questions about Sentry training or to register for a class, email sentrypost@altec.com.