QEI Doors, Gates, and Entrances 3

Question 1

What test does a Qualified Elevator Inspector perform to verify hoistway door interlock functionality?

Accepted Answer

Attempt to move the car with each landing door in a partially open position

Answer

Measure the electrical resistance across each interlock contact pair

Answer

Apply 75 lbf to each door panel and verify it does not deflect excessively

Answer

Test each interlock mechanism with a calibrated spring scale

Question 2

What is the primary purpose of the entrance sill in an elevator doorway?

Accepted Answer

To protect the floor threshold and guide the bottom of door panels during their travel

Answer

To provide emergency lighting illumination at each floor level

Answer

To guide door rollers during door travel

Answer

To anchor the hoistway door interlock mechanism to the building structure

Question 3

What immediate action must a QEI inspector take if a hoistway door interlock fails during inspection testing?

Accepted Answer

Tag the elevator out of service until the interlock is repaired and verified

Answer

Document the deficiency and allow continued operation pending repair scheduling

Answer

Notify the building owner to schedule repairs within 30 days

Answer

Reset the interlock and perform one additional retest before making a final determination

Question 4

What is 'door dwell time' in the context of elevator door operation?

Accepted Answer

The time the door remains fully open at a landing before the closing sequence begins

Answer

The time required for the door to complete its full opening stroke

Answer

The delay between door closure completion and car departure from the floor

Answer

The maximum time allowed for nudging before the elevator initiates an automatic shutdown

Question 5

What is the function of a retiring cam in older power-operated elevator door systems?

Accepted Answer

To retract the clutch vane as the car departs a landing, disengaging from the hoistway door

Answer

To prevent the door from opening when the car activates an emergency stop

Answer

To provide a mechanical stop that limits the maximum door opening width

Answer

To automatically reset the interlock electrical contact after each floor stop

Question 6

How must hoistway doors be unlockable from the landing side for emergency access per ASME A17.1?

Accepted Answer

A specific triangular or special emergency key is required to unlock the door from the landing

Answer

Any standard flathead screwdriver may be used to disengage the interlock mechanism

Answer

Hoistway doors cannot be unlocked from the landing side under any circumstances

Answer

Emergency unlocking requires activation of the building fire alarm control panel

Question 7

What must the inspector verify when examining door sill condition during an elevator inspection?

Accepted Answer

The sill and groove are clean, undamaged, and free from obstructions that could impair door travel

Answer

The sill is painted with high-visibility yellow paint to indicate the threshold

Answer

The sill groove is at least 3/4 inch deep to meet minimum code dimensions

Answer

Anti-slip material is applied within all door sill grooves at every landing