524 CMR, § 29.13 - Control and Operating Devices and Systems
(1)
Motor
Controller. A suitable lighted room shall be provided outside of
the hoistway for the motor controller and brake unless the motor and controller
and brake are located in the pit in which case masonry piers or columns shall
be provided of sufficient strength to take the impact of a full loaded
car.
(2)
Location of
Motor and Controller. Where the motor and controller are located
in a hoistway pit or in a pit adjacent to the lifting platform, access to same
shall be provided by means of a door entirely below the bottom of the platform
when the platform is at its lowest limit of travel.
This door shall be of sufficient width and height to make the entrance readily accessible.
(3)
Terminal Limit Switches. Enclosed terminal limit
switches located in the hoistway shall be provided and arranged to
automatically bring the car platform to rest as it approaches either terminal
landing.
(4)
Final
Limit Switches. Enclosed final limit switches shall be provided at
the top and bottom of the hoistway arranged to cut off the current and stop the
platform if it should travel beyond the terminal limit switch. Electric power
elevators having winding drum machines shall have the stopping switches on the
machines and also in the hoistway operated by the movement of the
car.
Notes
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