TB 140 ELEVATOR OPERATIONS AT HIGHRISE INCIDENTS Flashcards
TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Firefighters wearing personal protective equipment and carrying necessary equipment require approximately one minute per floor to ascend stairs.
With a fire doubling in size every minute it burns unchecked
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Buildings with split banks of elevators, which may be used if the highest floor served by the elevator shaft terminates a minimum of ___ floors below the reported fire floor.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Phase I, “Recall Phase”
Manual or automatic recall of elevators to the lobby or designated recall level of the building either through the operation of a “Emergency Service” key switch in the lobby or fire control room or by the activation of an elevator lobby smoke detector.
In Phase I operation when the emergency operation switch is turned to the “ON” position, all elevator cars are recalled to the lobby (or designated recall floor) automatically.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Phase I, “Recall Phase”
The “Bypass” position is used to place the elevator in operation on a temporary basis when the entire building has been deemed safe for normal use, but there is still enough residual smoke to actuate the detectors or the detectors are malfunctioning. The elevator key is not
removable when the switch is in the bypass position.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Phase I, “Recall Phase”
The 2008 Elevator Code requires a similar three position “Recall” key switch with positions marked “RESET,” “OFF,” and “ON”
To remove the elevators from Phase I Emergency Recall Operation, the switch shall be rotated first to the “RESET” position, and then to the “OFF” position. With this system, there is no means to bypass the alarm system when a fire
protection device cannot be reset.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Phase II, “Override Phase”
Fire service controls within the elevator car itself which allows firefighters to manually control the elevator from inside the car only.
This switch is “normally” a three-position key switch (On-Off-Hold) that becomes operative when the lobby “Emergency Service” switch is in the “ON” position. Turning both switches (Phase I and Phase II) to the “ON” position operates the “Override Phase”.
“on,” “off,” and “hold” key positions in the elevator cars. Older elevator systems may have “fireman service” or “normal” labels, as opposed to “on” and “off.”
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
If the elevators have been recalled to the lobby by the activation of a smoke detector, the lobby panel should always be switched to the “ON” position and the key removed.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
When operating elevators in the “Emergency Service” mode, the automatic door open feature and photo-electric device are rendered inoperable.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Continuous pressure on the “Door Open” button causes the elevator doors to open. If the button is released prior to the doors reaching the fully opened position, the doors will automatically close. The only exception is that the doors may automatically open upon return to the lobby.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
Open doors are closed by continuous pressure on the “Door Closed” button, if provided. If a “Door Closed” button is not provided, continuous pressure on the desired floor button will serve to close the doors. If either of these buttons are released before the doors reach the fully closed position, the doors will automatically reopen.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
When multiple floor buttons have been selected, the elevator is designed to stop at the closest floor selected. At that time, all other selections are cancelled, and the elevator doors will remain closed.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
The “HOLD” elevator panel key position is used in order to maintain the elevator car on the floor where the elevator is currently located as well as maintaining the doors in the open position. The service key should be removable from the panel when placed in the “HOLD” position.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
It is imperative that the elevator operator remain in the elevator car and either maintain constant pressure on the “DOOR OPEN” button or activate the “HOLD” feature, due to the fact that the elevator doors may close.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
When the interior elevator key position is in the “OFF” position, the Emergency Service mode returns to Phase I, which will cause the elevator to return to the lobby.
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TB 140 ELEVATOR OPERATIONS AT HIGHRISE
The Company Officer, before using an elevator, should attempt to accurately determine the location of the fire or alarm. This can be accomplished through the inspection of the alarm panel, security closed circuit video, actual observation (fire indicated from an exterior window), or information received from building security, building maintenance or occupants.
Elevators shall not be taken closer than ___ floors below the reported fire floor or ___ floors below the lowest indicated alarm floor location.
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