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6) With the bracket installed, it will be noted that the 1/2" hollow rod extends over to each
stile and slightly beyond. The SAFETY BLOCK actuating levers slide over each end of
this rod and attaches to the SAFETY BLOCK with the special allen head screws supplied.
At this point, all attachments are “loose” and it should not be necessary to “force” anything
into place. Note that the allen screw acting as a swivel for the tripping lever is a special
shoulder bolt. “DO NOT MIX IT UP” with the other two plate attachment screws.
NOTE
When installed, the TRIPPING LEVERS should be in the UP position and holding the knurled
wheel clear of the rails.
7) Install the top spreader channel or prop below.
HORIZON CAR TOP PROP (OPTIONAL)
General
The idea of the Car Top Support (Prop) is to provide a refuge space equivalent to Rule 107.1
of A17.1 for elevators with insufficient overhead clearance. According to Rule 2500.8d, the Car
Top Prop may be permitted in an existing building as an “alternative” to providing sufficient
overhead clearance.
Operation
The Prop is installed so that when rotated to the “ON SERVICE” position, it is designed to
interact with a striking plate mounted at the top of the jack. By design, this will immediately
stop the upward movement of the elevator both by mechanical means and electrically. An
electrical protective switch detects movement of the telescoping portion of the Prop and opens
a control circuit to prevent further upward movement. The switch is sensitive to force and will
open when a maximum of 20 lbs. force is applied. This permits the lift to be operated in the
down direction to move away from the Prop, if inadvertently actuated. This is in conformance
with Rule 2500.8d(a).
Storage
During normal operation of the elevator, the Prop is lifted and rotated to the left maximum
position where it will drop into a “locked” position. In this position, the Prop is deactivated and
does not contact the striking plate at the top of the jack.
NOTE
The Prop must be in either the maximum left or maximum right rotated and locked position for
operation of the elevator. In the maximum left position, the elevator is operated by the normal
operating controls and with the Prop in the maximum right position, the elevator is operated by
the car top inspection station.
Deployment
Position the elevator so that the car top is approximately level with the second floor landing.
Use the hoistway access switch, if supplied, or the manual unlocking device. In compliance
with the code requirements, the Concord Car Top Prop can be deployed without full bodily
entry into the car top area. The handle of the prop can be reached while leaning out from the
landing sill. Lift the handle about 1/4" and rotate it to the right to its maximum travel. The Prop
will automatically drop into the locked position when released.
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