Elevating Devices
This domain tests the Ontario elevating-device safety framework: the Technical Standards and Safety Act, 2000, Ontario Regulation 211/01, and the adopted CSA B44/ASME A17.1 elevator code. Expect questions on code compliance, maintenance and inspection practice, hazard control, documentation, and the scope boundary between an EDM-A and a licensed Elevating Devices Mechanic. The exam is applied: you must recognize a code requirement, apply it to a field situation, and know when work must stop and be escalated.
Core rules and concepts
- Elevating devices must be installed, altered, maintained, and tested in accordance with Ontario Regulation 211/01 and the adopted CSA B44 code. The code edition referenced by the authority having jurisdiction governs; do not assume an older edition applies.
- Safety devices - door interlocks, car and counterweight safeties, governors, buffers, final limits, emergency communications - must remain functional. Bypassing or jumperimg a safety circuit is permitted only for controlled testing, with the device restored and verified before return to service.
- Maintenance must be planned, performed by a competent person within their certificate scope, and recorded. Records should identify the device, work performed, measurements, deficiencies, and corrective action.
- Pit and hoistway work requires controlled access, fall protection, lockout of electrical and mechanical energy, barricades, and clear communication. Never enter a pit or hoistway without establishing safe access and confirming the car cannot move unexpectedly.
Worked example
A car is rated at 1.75 m/s. The car-safety governor must trip within the code range for that rated speed - commonly 115% to 140% of rated speed. Lower limit: 1.75 × 1.15 = 2.01 m/s. Upper limit: 1.75 × 1.40 = 2.45 m/s. A measured trip speed of 1.90 m/s is below the lower limit, so it does not meet the required range. The correct response is to treat the governor as deficient, investigate adjustment or wear, retest, and document the result; do not return the unit to normal service on the assumption that “it still trips.”
Traps that cost marks
- Confusing rated speed with contract or actual measured speed.
- Quoting a code limit without checking the adopted edition or device type.
- Treating a safety-circuit jumper as a normal maintenance aid.
- Assuming an EDM-A may independently perform or certify work reserved for a licensed EDM.
- Omitting the record: an unrecorded test or deficiency is difficult to defend and may be treated as not done.