If the ratio of movement between a synchronous selector and the elevator car is 60 to 1, how far will the selector move if the car travels 30 feet?
(Ans- 6 inches
What device is installed to hold the vertically bipa
...
If the ratio of movement between a synchronous selector and the elevator car is 60 to 1, how far will the selector move if the car travels 30 feet?
(Ans- 6 inches
What device is installed to hold the vertically biparting freight doors mechanically closed?
(Ans- Keeper
Which of the following statements is correct regarding single-section swing doors used as emergency exits for blind hoist ways?
(Ans- The doors must be self-closing and self-locking, a unique key, and switch to prevent elevator operations when open.
When setting up a retiring cam for a freight elevator, which of the following statements is correct?
(Ans- The cam must apply a force that is double what's required for normal interlock operation
Refer to Figure 1: What contact or contacts are closed when the doors are closing and you have reached the first slow down?
(Ans- 1 only
What does the symbol shown below represent?
(Ans- Ground
How many turns of safety rope must remain on the safety drum after a rated load and rated speed test of a winding drum operated safely?
(Ans- 3
What is the maximum force allowed during the passenger door closing cycle to prevent a door at rest from closing?
(Ans- 30 lbs
Proper adjustment of which of the following can reduce the effects of building compression on an elevator installation?
(Ans- Rail jack bolts
When installing passenger hoist way entrances in a rise of more than three floors without a running platform, which procedure should you follow?
(Ans- Build a template that you can use to measure off the door frame locations and sill center line
What type of flex would be used to pipe a switch in a wet location?
(Ans- Liquid tight Flex
[Show More]