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Modernization & Upgrades Flashcards

7 cards from real CET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Modernization & Upgrades flashcards as text
  1. When modernizing an older traction elevator's control system, which component is typically upgraded first to enable compatibility with newer safety features?

    Answer: The relay logic controller

    Relay logic controllers are replaced with solid-state or microprocessor-based controls to support modern safety and diagnostic features.

  2. A car operating panel (COP) replacement during modernization must comply with ADA requirements. What is the maximum mounting height for the highest operable control button?

    Answer: 48 inches AFF

    ADA requires the highest operable part of a control to be no more than 48 inches above the finished floor for a forward reach.

  3. During a hydraulic elevator modernization, the existing single-bottom jack is replaced with a PVC-lined telescopic jack. What is the primary reason for this upgrade?

    Answer: To prevent soil and groundwater contamination from oil leaks

    PVC-lined and double-bottom jacks prevent hydraulic fluid from leaking into the ground, addressing environmental protection requirements.

  4. When upgrading an elevator to meet current ASME A17.1 requirements, which device must be added if the car has a collapsible gate and no automatic door?

    Answer: A car gate switch

    A car gate switch is required to prevent the elevator from operating unless the car gate is fully closed.

  5. A modernization project requires installing a new variable voltage variable frequency (VVVF) drive. What must be verified regarding the existing hoisting motor?

    Answer: Motor winding insulation is rated for inverter duty (NEMA MG1 Part 31)

    Inverter-duty motors with insulation rated per NEMA MG1 Part 31 are required because VVVF drives produce voltage spikes that can damage standard motor windings.

  6. Which ASME A17.1 rule governs the requirement for firefighters' emergency operation (FEO) when an elevator is modernized?

    Answer: Rule 2.26.1

    ASME A17.1 Rule 2.26.1 covers firefighters' emergency operation requirements, which must be added or updated during modernization.

  7. When replacing a drum-type elevator machine with a geared traction machine during modernization, what critical recalculation must be performed?

    Answer: Counterweight balance and rope factor of safety

    Counterweight sizing and rope factor of safety must be recalculated to ensure safe operation with the new traction machine configuration.