NM CID GS-9 Practice Questions - New Mexico CID GS-9 Elevators, Escalators And Conveyors Examination Exam

A commercial hydraulic elevator power unit must include a pressure-relief valve. What is that valve required to do?

Hold the car at the landing by trapping oil under the plunger at unlimited pressure Limit maximum system pressure by discharging oil back to the tank if pressure exceeds the valve setting Replace the car safety Initiate Phase I recall

Correct Answer:

Limit maximum system pressure by discharging oil back to the tank if pressure exceeds the valve setting

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