Unit 7 Flashcards
What is the maximum continuous time for handrail speed deviation to be greater than 15% of step/treadway speed before power is removed from the driving machine ?
6s
What is the minimum light intensity at landing floor plates ?
50lx (5fc)
Which inspection station remains in control for an escalator/moving walk when both inspection stations are activated ?
Both stations will be inoperative
What is the most common and simplest maintenance method examination for an escalator or moving walk?
Exterior visual inspection
What action should be taken before performing maintenance examinations on escalators or moving walks without inspection control?
Disable continuous run
Where is the speed of an escalator measured ?
Centre line of steps
What is the maximum number of broken or missing teeth allowed before the con plate segment must be replaced?
0
What is the maximum allowable distance between the treadway and the skirtless balustrade ?
6mm
What is a good practice when replacing demarcation light bulbs?
Replace them all
What is the maximum allowable clearance between step treads on the horizontal run ?
6mm
What is the maximum allowable cord length for a portable inspection station )
3000mm
What is the minimum allowable step tread depth?
9.5mm
Where must caution signs be located on an escalator or moving walks without?
Top and bottom
What is the maximum allowable deviation in elevation between adjacent ends of pallets
1.6mm
What is the maximum allowable gap between interior balustrade panels ?
5mm
