§ 14-16-62. Machines and machine safeties.

A.

Set screw fastening. No set screw fastenings shall be used on power elevators in lieu of keys or pins on connections subject to torque or tension.

B.

Friction gearing. No friction gearing or clutch mechanism shall be used for connecting the drum or sheaves to the main driving gear of power elevators.

C.

Cast-iron teeth. No worn or gear having cast-iron teeth shall be used for replacement purposes on a worn and gear driven power machine.

D.

Brakes. No power elevator machine except hydraulic machines shall be operated without brakes, which apply directly to the hoisting machines and are arranged to apply automatically by springs or gravity when the operating device is in the "STOP" position.

E.

Electrically released brakes. All electric elevators, except electro-hydraulic elevators which are operated and/or controlled by magnetically operated contractors shall be equipped with electrically released brakes.

F.

Belt or chain drive. No belt or chain driven power machine with a car traveling in excess of 30 feet shall be used for any passenger elevator unless the machine is equipped with an electrically released brake and a broken belt or broken chain safety switch of the non-automatic-reset type.

G.

Slack cable device. Winding drum power machines shall be equipped with a slack cable device to apply the brake and stop the machine if the car should be obstructed while descending.

Exceptions:

1.

Platform elevators with a travel not exceeding 15 feet;

2.

Sidewalk elevators with a travel not exceeding 30 feet.

H.

Slack cable switches. Slack cable switches located on the top of the car shall be of the enclosed type.

I.

Chain drive. Chains for chain-driven machines when replaced shall be of the belt type with multiple links.

J.

Reverse phase relay. Power elevator machine motors operated by polyphase alternating current shall be equipped with a reverse phase relay or equivalent protection.

K.

Power for hand elevator. No electrically or mechanically driven friction gearing or clutch mechanism shall be used to operate any hand power elevator.

L.

Fuse or circuit-breaker. No wire or other current-carrying device shall be substituted for the proper fuse or circuit breaker in an elevator circuit.

(Code 1967, § 49-112; Code 1985, § 46-132)