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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 296. Labor and Industries, Department of |
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Chapter 296-96. Safety regulations and fees for all elevators, dumbwaiters, escalators and other conveyances. |
Section 296-96-18050. What types of stop switches and protective devices are required on boat launching elevators?
Latest version.
- (1) All electric boat launching elevators must be equipped with:(a) A bottom terminal stop switch operated by the traveling cable and a float or some other department approved mechanism;(b) A top terminal stop switch that is located in the hoistway and is operated either by a cam attached to the car or some other department approved mechanism; and(c) Key-operated, continuous pressure type operating switches that are located outside the hoistway but within sight of the elevator car or platform.(2) All boat launching elevators operated by a winding drum, must be equipped with a final stop switch that is located on and operated directly by the driving machine. Chains, ropes or belts must not drive final stop switches.(3) All boat launching elevators driven by a polyphase alternating current motor must be equipped with the following approved relays:(a) A reverse phase relay that prevents the driving machine motor from starting when either the phase rotation is in the wrong direction or there is a phase failure; and(b) A main line relay or contact that automatically stops power to the driving machine motor and brake, activating the brake when any safety device is activated.(4) Hand rope controls must not be used on any boat launch elevator.