AND ANSWERS LATEST UPDATED
What code do most issues regarding the installation of temporary hoists fall under? -
ANSI A10.4
There is a problem with the UP valve and the low oil timer has tripped. What is the
expected result? - The car returns to the lowest floor
Which of the following best describes a one person pressure relief valve test? - A single
mechanic operates the pump from outside the machine room and records relief
pressure
Two line starters are required for what type of AC motor control? - Wye-Delta
In order to perform a pressure relief test, which circuits would have to be temporarily
bypassed? - The up limit switches
.
Rack and Pinion pit structures consist of which of these components? - Foundation,
base enclosure, buffer springs
The elevator is running erratically and you want to clean the valve screen. What must
you do to ensure that oil doesn't leak when you remove the screen? - Close the
machine room shutoff valve.
If electrolysis erodes the bottom of the hydraulic cylinder, which of the following provides
a measure of safety? - Safety bulkhead at the bottom of the cylinder
Safety hooks are best described by which of the following? - Mounted to the frame
below the lowest pinion
If a gauge is used to measure system pressure with the elevator at rest and the size of
the plunger is known, how can the total weight of the elevator be calculated? - Multiply
pressure times area
, ASME code permits a scavenger pump or which of the following to collect oil leaked
from the gland packing? - 5 gallon container
What are the most common types of drive units for stairway chairlifts? - Winding drum
and rack & pinion
Approximately how many gallons are required to raise a 9" plunger 30 feet? - 99.1
gallons
Which of the following practices should be followed when initially lifting a load? - Lift the
load a few inches, then recheck all rigging.
What must be done to prevent hoist car run away prior to removing the motor assembly
from the gear box on counter weighted hoists? - The cage must be tied down
What component of a permanent installation hoist may help prevent over speeding of
the car during manual release of the motor brake? - Centrifugal brake
How is the right or left side of a stairway determined? - Standing at the bottom and
looking up.
What type of pump system delivers constant volume at all pressures? - Positive
displacement gear pump
What best describes the pinion of the governor safety device? - It free wheels until the
hoist exceeds tripping speed in the down direction
What is the maximum allowable rated load for a LULA elevator? - 1,400 Ibs.
Layout. What is the correct distance to the center of wellway from the column line? - 17'
6 3/4"
The platen plate connects which two hydraulic elevator components together? - Plunger
and bolster assembly
Submersible pump units are always designed by which of the following methods? -
Direct coupled motor and pump
What is the maximum angle of inclination allowable for a moving walk? - 12 degrees
You are performing an acceptance test and must document the working pressure. What
must be done to record this pressure? - Run the elevator up with full load