I've been working on elevators for 34 years elevators if you release the brake on a geared machine and the elevator cab is empty with no load the elevator will go in the up Direction because a counterbalance weight is 40% heavier than the car
exactly and most people dont realize this they think when the brakes fail that an elevator will go down the shaft but the counterweight is there to balance the load out so the motor is only doing like 50% of the work
Not only geared machines. A gearless machine will also run when the brake is released and it will also run more freely because it doesn’t have to push back through that worm gear. Whatever the machine, it all depends on the amount of load in the car.
Also firefighters should know the difference between an elevator geared machine in an elevator gearless machine it is very very very very very very very very dangerous if you pick the brake on a gearless machine at elevator cable take off in the up direction and you will not be able to stop it not be able to stop it it will crash into the overhead it's happened many times
Exactly. So my biggest question is how extensive is their training? Is IUEC/NEIEP involved with their training? Because that sht wouldn't fly within the elevator industry.
I've been working on elevators for 34 years elevators if you release the brake on a geared machine and the elevator cab is empty with no load the elevator will go in the up Direction because a counterbalance weight is 40% heavier than the car
exactly and most people dont realize this they think when the brakes fail that an elevator will go down the shaft but the counterweight is there to balance the load out so the motor is only doing like 50% of the work
Not only geared machines. A gearless machine will also run when the brake is released and it will also run more freely because it doesn’t have to push back through that worm gear. Whatever the machine, it all depends on the amount of load in the car.
Also firefighters should know the difference between an elevator geared machine in an elevator gearless machine it is very very very very very very very very dangerous if you pick the brake on a gearless machine at elevator cable take off in the up direction and you will not be able to stop it not be able to stop it it will crash into the overhead it's happened many times
Exactly. So my biggest question is how extensive is their training? Is IUEC/NEIEP involved with their training? Because that sht wouldn't fly within the elevator industry.
Question which type of elevator do you think is more expensive to both install and maintain hydraulic or traction
I personanally think traction is more expensive because hydraulic ones can only go so high but traction can go way higher
Yes I have to agree tractions more expensive cable elevators
As soon as you cut power, the rope gripper engages. No amount of monkeywrenching will get that thing to move.
Oops, firefighter, there are no such things as "AC current" or "DC current." What guess might you have for why?