LA City Test - ORAL (April 1992) Flashcards
What is the 1st thing you should do if there is an accident on an elevator in your charge?
Call the Department of Building and Safety, Elevator Division
Can you run 110 VAC and 220 VAC in the same conduit?
Yes, provided the wire is all insulated to the highest voltage
Standard Bell signals for hoisting?
1 - STOP
2 - UP
3 - DOWN
4 - ALL OFF
Minimum height of counterweight guard from the pit floor?
Guards shall extend from a point not more than 12 inches above the pit floor to a point not less than 7 feet nor more than 8 feet above the floor
Where are the thrust bearings on an elevator machine
On either or both ends of the worm shaft
How do you determine a grounded circuit?
Turn off power. Check with meter or a bell set
Why is a guard attached to the front of the elevator platform?
To prevent sheer. The length of the leveling xone plus 3 inches. To guard against toe sheer
What is a car leveling device?
Any mechanism that levels the car within a given zone in the direction of the floor and stops the elevator. Either automatically or umder control of an operator
How do you reverse a three phase AC motor and DC motor?
AC change any two leads
DC change the field leads or armature leads
How often must a over head drum machine be resocketed to reshackled?
Every 12 months
How often must a basement drum machine be resocketed or reshackled?
Every 24 months
How many wraps must be on a drum machine when the eleveator is at its full limit of travel
One complete wrap
What is a class C freight?
Class C is classified for industrial Loaded Truck Freight
How often must a traction machine be re-roped?
When one cable shows any type of wear or strain such as frayed strands, all cables must thenm be replaced
What is the most common rope failure?
The lack of lubrication
