7.2 ROUTINE INSPECTION
Division 300 of the A17.2 Manual covers inspections made on the escalator exterior. This
section of the A17.2 Manual is quite complete and covers the majority of the items to examine.
However, the inspector must also check to see that all operating equipment is functioning in its
intended manner and that the appearance is acceptable to the rider.
7.2.2 Balustrades And Guards
Note any cracked or broken balustrade panels or ceiling intersection guards. Also note any
screws or fasteners used to hold panels or molding that are not flush or that have burrs. Ceiling
intersection guards should conform to dimensions shown in Figure 7-4. Check to see that
anti-slide devices are provided on decks where required for equipment installed under the 1981
and later editions of the Code.
The handrails should be inspected, paying close attention to all splices and joints. Splices or
joints that open up can cause severe finger pinch as the handrail goes around the newel.
Handrails should move in the same direction and at substantially the same speed as the steps.
Handrail tension should be checked by grasping a handrail, on a down running escalator, from
the top landing. If it takes a great amount of effort to stall the rail, the tension is correct. If the
handrail can be easily stalled then it should be readjusted.
7.2.4 Step Treads And Risers
The escalator step treads and risers should be checked for broken corners, worn surfaces, oil
or debris. They should also be checked for excessive play in both directions of travel and from
side to side. Check clearance on units without cleated step risers (installed prior to 1971 edition
of the code). A clearance in excess of 5/32" may indicate worn chain pins and bushings and
require step chain replacement.
Inspect the combplate and note any damaged or missing combplate teeth. The combplate
teeth should mesh evenly with the step-treads and the bottom of the teeth should be below the
upper surface of the steps. Damaged combplate teeth are very hazardous and should be replaced