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ELEVATOR MECHANIC 2026 STUDY GUIDE
BUNDLED MATERIALS
◉ RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = Answer: Know the formula for RPM 435 Pg. 5 ◉ If you are referring to a megohm meter, it is a test of the insulation properties of such things as electric wiring, motor windings and high power antenna mounts. We use a "megger" or "meg out" electrical wiring and equipment to see if it is shorted to ground or the frame in any way. The megger uses much higher voltages to check resistance than a normal Volt-ohm meter. Minimum resistance is 1 Meg Ohm Answer: Know what a Megger is and what it does
636 Pg. 13 ◉ (1) A parallel connection. (2) A resistive element placed across the terminals of an armature to bypass a portion of the current. (3) A flexible electrical conductor designed to conduct current around the mechanical joint between two conductors. (4) The resistive element (Usually of very low resistance) used in parallel with a DC ammeter movement to bypass a calibrated portion of the total circuit current. Answer: Shunt Overloads 425 All Pages ◉ Bad Ground Answer: You are using a Temp Run Box and you get shocked! Why! 520 Pg. 4 ◉ The bridle hitch can consist of two,three, or four single hitches (fig. 3-22), used together to form a bridle hitch for hoisting an object A sling with two legs used to lift a 1,000 pound object will have 500 pounds of the load on each leg when the sling angle is 90 degrees. The load stress on each leg increases as the angle decreases; and if the sling angle was 30 degrees lifting the same 1,000 pound object, the load will be 1,000 pounds on each leg. Try to keep all sling angles
◉ 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. On a calculator Multiply the percent 10 by the number you have and ÷ by 100 10 X 52 ÷ 100 = 5.2 Answer: Pulling Spare Wires (Example) 10% of 52 Wires 515 Pg. ◉ The correct lube must be used on chains. Answer: The freight door motor is spinning but the door wont move, Why? 535 Pg. 9 ◉ 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 Answer: Read Lula and Dumb waiters 545 Pg 1 ◉ You never get on top and you work only partially in with the main line OFF Answer: If you get on top of Dumbwaiter what must be done? 545 Pg 14 ◉ Notes:(Pi) π is 3.1416 and 231 Cubic inches to the Gallon Area:
Up Valve: The most complicated valve in system Controls Up Start and acceleration to high speed, up slow down, up leveling speed, and up stopping. Down Valve: Because the elevator is not running when on the down direction the down valve depends on system pressure. Bypass and Relief Valve: Have been combined into one Answer: Valve Operation 815 Pg 16, ◉ Simply: In a Inverting Op Amp (INPUT) is supplied to the Negative In a Non Inverting Op Amp (INPUT) is supplied to Positive Answer: Amplifiers (Inverting and Non Inverting) 640 Pg 11
◉ Minimum is 2 switches 15 lbs. and must stop the lift within 2" Answer: In a vertical lift how many sensors are required (Pan Switches) 845 Pg Unknown ◉ SCRs are used in DC door motor control and more commonly in Direct Drives (Replacing DC Generators) SCR is a three terminal device. It basically acts as an on/off switch by pulsing the gate of the SCR with a positive voltage. Once an SCR is turned on it remains on, till anode and cathode voltages equalize or the anode and cathode are reversed biased or voltage is removed from the anode and cathode. Answer: SCR's 635 Pg ◉ 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 Answer: SCR Example:
Timing begins when the current from the feed is removed. ON Delay Timing Circuit: Figure 31 When the switch or contacts close the relay is delayed being energized until the capacitors charged.In an On Delay circuit the capacitor is connected in parallel. Answer: Off Delay and On Delay Timer Cicuits 710 Pg 16 ◉ When the Generator and Hoist motor armature are connected in parallel they form a closed loop.In this configuration car speed is controlled by controlling the amount of current passing thru the generator shunt field. To achieve nearly constant speed under changing loads , The Ward Leonard System of automatic armature voltage control has been in use for 1/2 century. This system also regenerates power back thru the generator to the AC mains, and an energy cost is realized. Answer: Ward Leonard System 425 Pg 7, ◉ Extension tubes and ties Answer: Rack and Pinion Hoist (Outside Hoist) Contractor wants to move the hoist, what do you need?
850 pg 11, ◉ Incorrect column line or incorrect benchmark Answer: Escalator is 10 inches too low, what was wrong? 825 Pg 12 ◉ Mark along the top portion of incline and bottom. (Not on curved section)Measure in between. Measure Down! Advance the escalator till the bottom line is at the top and place new line at bottom using first measurement. Continue to do this till you reach first measurement. Add all together. Note: Last measurement will be shorter than the rest. Answer: How do you measure an Escalator Hand Rail 835 Pg 14 (Figure 14) ◉ Moving walkway Max angle is 12° Escalator Max angle is 30° Answer: What is Maximum Incline of Moving Walkway? (Example) The moving walkway is at 10° in the field, how much more of an angle could it be at?
◉ Gear Oil, Non Detergent, Single Viscosity Answer: What type of oil do you put in a machine? ◉ DO NOT TORQUE them at joints Torque limits are required to maintain the shape of the rail. Answer: Omega Rails 220 Pg 8 ◉ 3 - 225 Ohm resistors in parallel Answer: a 75 Ohm resistor has blow and you don't have a replacement, What can you use? ◉ You open contact E to reduce the current. Contact E opens when the brake is lifted and inserts more of the brake resistance in this series circuit, reducing the value of the brake current. This circuit places a small portion of the break resistor in series with the brake coil at the start to limit the initial current into the coil, After the coil is fully energized, the full resistor is introduced to further reduce the coil current. That is the current has to gradually build up in the coil and once it does ,it does not require as much current to keep it energized.Like a flywheel, it takes alot to get it going but once its rotating not much is needed,
The final current value prevents the brake coil from saturating and thus allow it it to drop quicker and more gently when applying mechanical brake. Answer: Series Brake Circuit (345 Pg 8 Figure 11) 345 Pg 8 Figure 11 ◉ The hoist can go on safeties! Answer: If a Rack and Pinion Hoist (Outside Hoist) is not Plumb ,Level and Square what can happen? 850 Pg Unknown ◉ The extension tubes provide necessary clearance for placement of concrete forms Answer: Extension tubes 850 Pg 16 ◉ INDUCTORS Answer: If a Hoist Motor is making noise, What is the problem 625 Pg 12 Figure 18 ◉ (Pi) 3.1416 x (R)radius ²(squared) Plunger diameter is 10"
Low 0 High 1 High 1 High 1 High 1 Low 1 High 1 High 1 High 1 High 1 High 1 Low 0 Answer: And Gates(And) and Exclusive Or Gates(XOR) 645 Pg 5 , 9 ◉ 1 inch is equal to 2.54 cm 1 inch is equal to 25.4 mm Answer: Convert Inches to Millimeters 305 Pg Reference Card ◉ Step Level switches (Sometimes referred to as Sag Switches) are located within the step band of both upper and lower truss assemblies.The switches function is to prevent a step that is sagging more than 1/8 inch at the riser end of either side of the step. This is generally caused by worn, damaged or missing step wheels. This switch is manually reset to be able to run. Answer: Escalator Step Level Switch 825 Pg 37
◉ The Micrometer is an instrument for measuring very small lengths using the movement of a finely threaded rotating screw. The Metric Mike is graduated and read in hundredths of a millimeter (0.01 mm) The US Mike is graduated and read in thousandths on an inch (0. in.) Answer: Micrometer Reading 170 Pg 17 ◉ From the outside in, Preventing those in the cab from getting out on their own. Answer: The Escape Hatch opens which way? ◉ An Escape Hatch is not necessary UNLESS manual operation is not provided! Answer: Does a residential lift require an Escape Hatch 845 Pg 6 ◉ Abstract Answer: What print will show you the location and how many fixtures? 175 Pg 8
For hard rock we use (Percussion Rotary) Drilling. This method uses a special bit called a Button Bit which has water and compressed air coming out of bit. Answer: What kind of drill method do we use in soft soil? 805 Pg 5,6, ◉ A Sawtooth Wave Form is produced when the rise and fall of the Encoder has a fault, Answer: You get a Sawtooth reading on oscilloscope out of encoder. Is it good? 350 Pg 16,17 630 Pg 18, ◉ Raise Boom / Arm out straight to side with thumb pointed up. Lower Boom / Arm out straight to side with thumb pointed down. Extend Boom / Thumbs pointed out Retract Boom / Thumbs pointed in Hoist up / Forefinger up rotating clockwise
Hoist down / Forefinger out facing down rotating counterclockwise Answer: Hand Signals for Moving Boom of Crane and Extend signal. 128 Pg 12 ◉ The Travelling cable is connected to the car hanger to form a loop.Generally this loop should be at least 30 times the diameter of the traveling cable,The Hanger may have to be adjusted POST WISE so the loop clears the edge of the platform.The cable must have a minimum of FOUR feet vertical suspension at both the hoist-way and car hanger attachments before it starts to form into its loop. Answer: Traveling Cable 515 Pg 8, ◉ Use larger Wire Answer: In a modernization, they plan on moving the controller 30 Feet away which ends up resulting in a voltage drop. What do you do? ◉ The main function of the governor is to grip the governor rope. This action applies the safety stopping device on the care or the counterweight. To do this the governor must first sense an over- speed condition and than apply a braking action. Tripping Speed: Minimum tripping speed to be not less than 115% of rated speed.
