Exam (elaborations)
Elevator 245-250 Questions and answers
Elevator 245-250 Questions and answers
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Elevator 245-250According to code what is required on governors? - The governor rope
tag must be attached to the governor rope fastening
Can rouging be corrected by field lubrication? - No
During the inspection of elevator in service a damaged rope is
discovered what must be done? - All the ropes must be replaced
During the inspection of elevator that has not yet been turned over to the
customer a damaged rope is discovered what must be done? - Only the
damaged rope must be replaced
How are comp chains connected to the counterweight? - By s hooks
How do you test the diameter of a rope? - With a rope diameter gauge
How far should the car be moved between each stop when you're
inspecting the ropes? - 2-3 feet and examine each rope at each stop
How many different types of steel are used in the construction of ropes?
- 6 different types of steels can be used Traction Steel (TS); Plow Steel
(PS), mild plow steel (MPS)Improved plow steel (IPS, Extra Improved
Plow Steel (EIPS) Extra Extra Improved Plow Steel (EEIPS)
How much excess should be left after the comp chains are connected to
the car? - 6 ft
How much of the dead end of the rope should be left after feeding the
rope into the shackle? - At least 6-9 inches above the socket
How much rope should be at the dead end past the end of the socket? -
At least 6-9 inches if using belts ensure that it is a manageable size
How should compensating ropes be installed? - By unreeling then from
the lowest landing entrance
, If a rope becomes twisted in the overhead, how do you untwist it? - By
rotating the shackle until the rope lies flat
If both the car and counterweight are at the bottom which should be
raised? - The car because it contains the safety device
If tie downs are used when should they be installed? - Immediately after
installing the comp ropes
On 1:1 roping where do the ropes end? - Connected to the counter
weight frame
On 1:1 roping where do the ropes end? - Connected to the counter
weight frame
On 2:1 roping where do the ropes end? - In a stationary hitch at the top
of the hoistway
Once the compensating ropes are installed what must be done? - Run
the car to the center of the rise to verify equal tension at the bottom of
the counterweight fame
Once the new ropes reach the counterweight frame what should be
done? - The married sections of the old rope must be separated from the
new rope
What are crown breaks? - The number of broke wires per lay (the length
of a rope which on spiral completes 1 turn)
What are disadvantages of single roping? - Less traction, shorter sheave
life
What are disadvantages of using lang lay ropes? - Harder to handle;
more likely to untwist, kink easier and easier to crushing
What are key factors that should be explained to customers before
starting any roping operations? - The amount of space needed for
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