REV 1 Flashcards
VARIOUS CIRCUIT ARRANGEMENTS ARE POSSIBLE BY USE OF WATER FLOW
SWITCHES THAT ARE PLACED IN SPRINKLER PIPELINES AND OPERATE WHEN
SPRINKLER HEAD GOES OFF
Sprinkler Alarms
DEVICES RESPOND TO ELEVATED TEMPERATURE.
Temperature Detectors
DETECTORS REACT TO OBSCURATION OF A LIGHT BEAM BY SMOKE.
Photo Electric Detectors
OPERATED BY DETECTING IONIZED PARTICLES IN AIR
Ionization Detectors
TYPES OF FLAME DETECTORS
INFRARED and ULTRAVIOLET
TYPES OF FLAME DETECTORS THAT REACTS TO IRRADIATION
INFRARED
TYPES OF FLAME DETECTORS THAT REACTS TO ULTRAVIOLET RADIATED FROM ACTIVE FLAME.
ULTRAVIOLET
THIS SYSTEM ALSO CALLED COMMON CODED AND FIXED CODED
Master Coded System
IN A SYSTEM WHERE IT IS DESIRED TO IDENTIFY A ZONE, ONE CAN DO SO BY
UTILIZING A NON CODED SYSTEM WITH ZONE LIGHTS, AN ANNUNCIATOR OR A CODED
SYSTEM.
Zone Coded
SEVERAL LEVELS OF SECURITY ARE AVAILABLE AND CAN BE APPLIED IN
ACCORDANCE WITH THE SECURITY NEEDS.
Personal Entry Control
FLASHING LIGHTS WHICH MAY BE COMBINED WITH BUZZERS OR BELLS WHICH ARE
CODED.
Visual
Elevator system includes:
- [Hoist Way
- [Machine Room
- [Elevator Car
- [Waiting Lobbies
Is a vertical shaft for the travel of one or
more elevators.
Hoistway
Usually located above the hoistway but could also be situated below, to the side or to the rear of
it.
Machine Room
Guided by vertical rails on each side, it conveys passenger or freight between floors.
Elevator Car
Elevator waiting areas are designed to allow free circulation of passengers, rapid access to
elevator cars, and clearly visible elevator signals.
Lobbies
Four Classifications of Passenger Elevators
- [General Purpose or [Commercial
- [Residential
- [Institutional
- [store
Is a cage of some fire-resistant material supported on a structural frame, to the top member of
which the cables are fastened.
Cars
Fastened to the top of the car pass over the sheave at the traction machine & then downward to
the counterweight.
cables
Turns the sheave & lifts or lowers the car.
Elevator Machine