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Elevator Modernization


Location
Oklahoma
Publication Date
02/17/2020 07:03 AM EST
Closing Date
03/09/2020 09:59 AM EDT
Issuing Organization
County of Creek
Solicitation Number
Description

Specifications include, but are not limited to: RETAIN POWER SUPPLY The present power supply will be retained and the new equipment will be arranged for this power supply. SOFT STARTER A new solid-state starter will be provided by the vendor. It will be of the same power requirement and starting configuration as presently exists. RETAIN MOTOR The existing motor shall be retained. It will be thoroughly inspected. Any components requiring replacement will be of the original manufacture or its equivalent. RETAIN VALVE Existing valve will be retained. It will be inspected and adjusted for proper operation. RETAIN POWER UNIT The existing power unit will be retained and reused. It will be thoroughly inspected and the existing valve shall be adjusted to work in conjunction with the new controller. AUTOMATIC SELF-LEVELING (WITH HOISTWAY LEVELING DEVICE) The elevator shall be provided with automatic self-leveling that shall bring the elevator car level with the floor landings, no more than +/- 1/2" regardless of load or direction of travel. The automatic self-leveling shall correct for over travel or under travel. NEW CONTROLLER A microprocessor-based control system shall be provided to perform all the functions of safe elevator motion and elevator door control. This shall include all the hardware required to connect, transfer and interrupt power, and protect the motor against overloading. The system shall also perform group operational control. Each controller cabinet containing memory equipment shall be properly shielded from line pollution. The microcomputer system shall be designed to accept reprogramming with minimum system downtime. NEW OPERATION - ONE CAR Operation shall be automatic by means of the car and landing buttons. Stops registered by momentary actuation of the car or landing buttons shall be made in the order in which the landings are reached in each direction of travel after the buttons have been actuated. All stops shall be subject to the respective car or landing button being actuated sufficiently in advance of the arrival of the car at that landing to enable the stop to be made. The direction of travel for an idle car shall be established by the first car or landing button actuated. “UP” landing calls shall be answered while the car is traveling in the up direction and “DOWN” landing calls shall be answered while the car is traveling down. The car shall reverse after the uppermost or lowermost car or landing call has been answered, then proceed to answer car calls and landing calls registered in the opposite direction of travel. If the car without registered calls arrives at a floor where both up and down hall calls are registered, it shall initially respond to the hall call in the direction that the car was traveling. If no car call or hall call is registered for further travel in that direction, the car shall close its doors and immediately reopen them in response to the hall call in the opposite. INDEPENDENT SERVICE When the Independent Service switch in the car operating panel is actuated, it shall cancel previously registered car calls, disconnect the elevator from the hall buttons, and allow operation from the car buttons only. Door operation shall occur only after actuation of the “DOOR CLOSE” button. CAR TO LOBBY OPERATION A key switch shall be provided for each elevator at the main floor. Its actuation shall cause the corresponding elevator to make a trip to the lobby as soon as the car is available for response to the special call.

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