OH Elevator Mechanic flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

ASME A17.1

Model safety code for elevators, escalators, dumbwaiters, and moving walks covering design, construction, installation, and acceptance testing requirements in the United States and Canada.

ASME A17.3

Safety code for existing elevators and escalators; specifies retroactive requirements and upgrades triggered when alterations exceed defined thresholds.

Firefighters' Phase I recall

Emergency operation that automatically or manually recalls cars to the designated landing, opens doors, and removes them from normal service when a fire alarm activates.

Phase II in-car operation

Firefighters' service mode allowing a firefighter to control the car from inside using the in-car key switch, with continuous-pressure door and travel controls.

Door closing force limit

Passenger elevator car and hoistway doors may not exceed 30 lbf kinetic or static closing force, measured per A17.1 test method.

Escalator incline and rise

Escalators are limited to a 30-degree maximum incline with a nominal 40-inch step width and a maximum rise per unit unless a code exception applies.

Ohio elevator rule chapter

Ohio Administrative Code Chapter 4101:5 contains the elevator rules adopted by the Ohio Board of Building Standards, including amendments to the model code.

Machinery space lighting

Machine rooms and machinery spaces require permanent lighting providing at least 19 foot-candles at working surfaces, with a switch at the entrance.

2:1 roping speed

With 2:1 roping the car moves twice the distance the rope moves, so the machine sheave and rope run at twice car speed.

Counterweight balance

Counterweight mass is typically car mass plus about 45 percent of rated load, balancing the car and part of the load to reduce motor torque.

Governor trip speed

The speed at which the governor grips and activates the safety, commonly set at about 115 percent of rated speed for car safeties.

Hydraulic relief valve setting

The relief valve is set at 150 percent of working pressure, not exceeding 2.5 times working pressure, and is verified during acceptance testing.

NEC Article 620

National Electrical Code article covering elevators, dumbwaiters, escalators, moving walks, and lifts, including feeder, branch circuit, and disconnect requirements.

Traveling cable support

The traveling cable must be supported and sized for full car travel plus an extra loop, with strain relief and conductor count matching fixtures.

Handrail speed tolerance

Escalator handrail speed must be within 2 percent of step speed, measured under specified load conditions at installation and after drive work.

Guide rail alignment

Rail plumb, gauge, bracket spacing, and fishplate torque follow A17.1 tables and must be recorded at installation and after realignment.

Category 1 test

Annual periodic test covering car and counterweight safeties without load, governor, buffers, terminal stopping, emergency brake, and door reopening devices.

Category 5 test

Five-year periodic test adding rated-load safety test, rated-load brake test, and hydraulic relief valve test beyond the annual Category 1 items.

Certificate of operation

Document issued by the authority having jurisdiction confirming the unit passed inspection; it must be posted in the car and renewed on schedule.

Rope retirement criteria

Rope must be replaced when broken wires over a lay length, diameter reduction, corrosion, or kinks exceed the limits in A17.1 tables.

Escalator step chain elongation

Step chain wear is measured as elongation over a set span; exceeding the manufacturer or code limit requires chain replacement.

Test log requirements

Each test record must show date, tester identity, test performed, and results; failed items must be corrected before the unit returns to service.

Buffer stroke check

Oil buffer stroke and oil level are verified during periodic testing to confirm the buffer can decelerate the car or counterweight within code limits.

Terminal stopping device test

Annual test confirming normal and final terminal stopping devices stop the car before it reaches the buffer or overhead obstruction.

Lockout/tagout

OSHA 29 CFR 1910.147 procedure requiring energy isolation, lock and tag application, and zero-energy verification before work on moving parts.

Pit stop switch

Switch in the pit that removes power from the car and opens the pit circuit; it must be opened before entering the pit for work.

Ohio contractor licensure

Elevator contractors and mechanics are licensed through the Ohio Department of Commerce, Division of Industrial Compliance; work requires a licensed contractor.

Acceptance inspection

Inspection performed after installation or major alteration, including witness of required tests, before a certificate of operation is issued.

Car-top operation

Inspection-speed operation from the car top using the car-top station; the operator must keep clear of the counterweight path and overhead obstructions.

NFPA 70E

Standard for electrical safety in the workplace covering arc-flash boundaries, energized work permits, and voltage-rated PPE for live troubleshooting.

Incident reporting

Serious accidents and injuries involving elevator or escalator equipment must be reported to the authority having jurisdiction for investigation.

Fall protection in hoistway

Work at heights in a hoistway requires a tie-off point or temporary guardrail; fall arrest equipment is inspected before each use.