Elevator Mechanic Exam 2023/115
Questions with 100% Verified Answers/A+
Graded
Know the formula for RPM - -RPM = 60 ∙ ƒ ÷ P÷2 =
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 =
Take answer 1 and ÷ by answer 2 =
-You are using a Temp Run Box and you get shocked! Why!
520 Pg. 4 - -Bad Ground
-Scaffolding, You have 32' of rise, you are using 3x5 scaffolding. Where will the tie off
points be ?
140 PG. 287-288 - -Scaffolding should be tied to the structure using
#9 wire or tie-in devices. The first vertical tie
should be at the maximum height of 4 times the
narrowest base dimension. Additional ties are not
to exceed 26' vertically. Maximum horizontal
distance between ties is not to exceed 30'.
-How much should Counterweight way?
240 Pg. 14 - -Counterweights (Typically) are hung to counter balance the weight of the car
PLUS 40% of Capacity Load.
-Pulling Spare Wires (Example) 10% of 52 Wires
515 Pg.26 - -Note: We do not use wire smaller than #20 in travelling cables and #24
outside travelers.
Largest wires are feeders to Hoist /Pump motor
We always have 10 % spares
10% of 52 = 5.2
On a calculator Multiply the percent 10 by the number you have and ÷ by 100
10 X 52 ÷ 100 = 5.2
-The freight door motor is spinning but the door wont move, Why?
535 Pg. 9 - -The correct lube must be used on chains.
-Read Lula and Dumb waiters
, 545 Pg 1 - -Lula: Limited use/Limited Access (Example Wheelchair Lifts)
Max Rise 25'
Max Speed 30 Ft/Min
Max Capacity 1400 Lbs.
Max Platform Area 18 Sq/Ft.
Residential Elevator:
Max Rise 50 '
Max Speed 40 Ft/min
Max Capacity 940 Lbs.
Max Platform Area 19 Sq/Ft
840 Pg 2
Dumbwaiters:
Platform limited to 9 Sq/Ft
Inside height is limited to no more than 4 Feet
Capacity is limited to 500Lbs
No Riders
-If you get on top of Dumbwaiter what must be done?
545 Pg 14 - -You never get on top and you work only partially in with the main line OFF
-PI Formula and Gallons (Example) How much oil to move a 6" jack 25'
815 Pg 10 - -Notes:(Pi) π is 3.1416 and 231 Cubic inches to the Gallon
Area:
Remember to ÷ 6" ÷ 2 = 3 to get Radius
Area = π∙ r²
Area = 3.1416 x 3 x 3 = 28.27 inches or 3.146 x 9 = 28.27
Volume
Multiple are times height to solve for Volume
V = A∙H
V = 28.27 x 300 (25" feet x 12" = 300)
V = 8481 Cubic Inches
Since we already know there are 231 cubic inches to the gallon
8481 ÷ 231 = 36.71 Gallons
-Relief valve working pressure - -Relief Valve is set at 150% working pressure
-SCR Example:
635 Pg 14 Figure 26 - -A Meter with the positive lead on the Anode and the negative lead
on the Cathode.
A jumper is placed across the Anode and Gate as well
This should show .7 Volts an indication of a Good SCR
Questions with 100% Verified Answers/A+
Graded
Know the formula for RPM - -RPM = 60 ∙ ƒ ÷ P÷2 =
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 =
Take answer 1 and ÷ by answer 2 =
-You are using a Temp Run Box and you get shocked! Why!
520 Pg. 4 - -Bad Ground
-Scaffolding, You have 32' of rise, you are using 3x5 scaffolding. Where will the tie off
points be ?
140 PG. 287-288 - -Scaffolding should be tied to the structure using
#9 wire or tie-in devices. The first vertical tie
should be at the maximum height of 4 times the
narrowest base dimension. Additional ties are not
to exceed 26' vertically. Maximum horizontal
distance between ties is not to exceed 30'.
-How much should Counterweight way?
240 Pg. 14 - -Counterweights (Typically) are hung to counter balance the weight of the car
PLUS 40% of Capacity Load.
-Pulling Spare Wires (Example) 10% of 52 Wires
515 Pg.26 - -Note: We do not use wire smaller than #20 in travelling cables and #24
outside travelers.
Largest wires are feeders to Hoist /Pump motor
We always have 10 % spares
10% of 52 = 5.2
On a calculator Multiply the percent 10 by the number you have and ÷ by 100
10 X 52 ÷ 100 = 5.2
-The freight door motor is spinning but the door wont move, Why?
535 Pg. 9 - -The correct lube must be used on chains.
-Read Lula and Dumb waiters
, 545 Pg 1 - -Lula: Limited use/Limited Access (Example Wheelchair Lifts)
Max Rise 25'
Max Speed 30 Ft/Min
Max Capacity 1400 Lbs.
Max Platform Area 18 Sq/Ft.
Residential Elevator:
Max Rise 50 '
Max Speed 40 Ft/min
Max Capacity 940 Lbs.
Max Platform Area 19 Sq/Ft
840 Pg 2
Dumbwaiters:
Platform limited to 9 Sq/Ft
Inside height is limited to no more than 4 Feet
Capacity is limited to 500Lbs
No Riders
-If you get on top of Dumbwaiter what must be done?
545 Pg 14 - -You never get on top and you work only partially in with the main line OFF
-PI Formula and Gallons (Example) How much oil to move a 6" jack 25'
815 Pg 10 - -Notes:(Pi) π is 3.1416 and 231 Cubic inches to the Gallon
Area:
Remember to ÷ 6" ÷ 2 = 3 to get Radius
Area = π∙ r²
Area = 3.1416 x 3 x 3 = 28.27 inches or 3.146 x 9 = 28.27
Volume
Multiple are times height to solve for Volume
V = A∙H
V = 28.27 x 300 (25" feet x 12" = 300)
V = 8481 Cubic Inches
Since we already know there are 231 cubic inches to the gallon
8481 ÷ 231 = 36.71 Gallons
-Relief valve working pressure - -Relief Valve is set at 150% working pressure
-SCR Example:
635 Pg 14 Figure 26 - -A Meter with the positive lead on the Anode and the negative lead
on the Cathode.
A jumper is placed across the Anode and Gate as well
This should show .7 Volts an indication of a Good SCR
