all subjects - arhitecture reviewer
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7/23/2019 All Subjects - Arhitecture Reviewer
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ALEXANDER SAN ANDRES
1
A stream of high-velocity temperature-controlled air which is directed downward, across an
opening Air Curtain
2
A package assembly of air conditioning components which provides for the treatment of air it
is distributed to an air conditioned space. AHU (Air Handling Unit)
3A device designed to stop an elevator car or counterweight from descending beyond itsnormal limit of travel Bumper
4
The portion of the hoist way extending from the threshold level of the lowest landing door to
the floor at the bottom of the hoist way. Elevator Landing
5
When the elevator car rest on its fully compressed buffer, there shall be a vertical clearance
of not less than between the pit floor and the lowest structural or mechanical part. 610 mm.
6
There shall be installed in the pit of each elevator where the pit extend more than ___ below
the sill of the pit access door 660 mm
7 Dumbwaiters total inside height shall not exceed ____ 1220 mm
8 Is the achievement of a temperature below that of the immediate surroundings. Air-conditioning
9Consist of a platform or car traveling in vertical guides in a shaft or hoist way, with related
hoisting and lowering mechanisms.elevator
10 Device for heating water or generating steam above atmospheric pressure. boiler
11 A system for transporting materials from one site to another, especially in a factory conveyor
12Machine that decreases the volume and increases the pressure of a quantity of air by
mechanical means.compressor
13
A device that maintains, control of the indoor environmentits desirable temperature,
humidity, air circulation, and purity for the occupants of that space or for the industrial
materials that are handled or stored there.
air-conditioning
14 Device that convert electrical energy into mechanical energy, by electromagnetic means. alternator
15 A machine that converts mechanical energy into electrical energy called generator
16
Device for reducing the temperature of a liquid, usually water, by bringing it into contact with
an airstreams where a small portion of the liquid is evaporated and the major portion is
cooled.
cooling tower
17A machine often provides the most convenient and economical means of transporting
relatively small articles between levels.dumbwaiters
18 Gives stability to governor ropes. counter weight
19 Are vertical tracks that guide the car and counterweight? guide rails
20
Are rectangular blocks of cast-iron stacked in a frame, which is supported at the opposite
ends of the cables to car is fastened. counterweight
21 Is the vertical passageway for the car and counterweight? shaft
22 Are fastened to car frame and counterweight at top and bottom. governor
MECHANICAL REVIEWER
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23 Is a device to absorb the impact of car or counterweight at the lower limit of travel? buffer
24 A device use for moistening the air at the desired degree? humidifier
25
An air-conditioning system in which the air is treated by equipment at one or more central
locations outside the spaces served and conveyed to and from these spaces by means of
fans and pumps through duct and pipes.
centralized air con
26 Its function is to dispose the heat carried away from the condenser compressor
27 Type of elevator that is raised or lowered quite simply by means of movable rod or plunger? hydraulic elevator
28 it is a device to control the temperature. thermostat
29It is a three section built up welded steel trussed framework, which supports the moving
stairway componentTruss
30 In electric elevator machine room is located at the pent house
31 Is mechanical device for transporting persons between two levels. escalator
32
The ratio of the maximum demand of a system, or part of a system, to the total connected of
a system or the part of a system under consideration is called demand factor
33The following are basic component parts of an
escalator except____.governor
34 Tesla is the unit of____. Magnetic flux
35Which of the following is not a component of a
hydraulic elevator?counterweight
36A bathroom containing a water closet, a
lavatory, and a bathtub.Full bath
37The following are elements of centralized
airconditioning system except _______.Method of cooling
38
Acoustics is a science that concerns with
______.
a. Transmission of sound
b. Effect of sound waves
c. Generation of sound
All of the above
39It is the flow of heat through a material by transfer from warmer to cooler molecules in
contact with each other.
Conduction
40Is a valve or plate that stops or regulates the flow of air inside a duct, chimney, air handler, or
other air handling equipment.Dampers
41 What is also known as a synthetic chemical refrigerant? freon
42 gas used as refrigerant with water ammonia
43 an air compartment or chamber plenum
44 liquid which is discharged as a waste effluent
45 A material which stops the transfer of heat is also known as? insulation
46 device used only to add humidity in the air hunidifier
47 heat is transferred through materials Conduction
48 a process which refrigerant from liquid to gas evaporator
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49 What is a cooling or heating element which is made of pipe or tubing? coil
50 device to control the thermostat relay
51 device used to vary the volume of air passing a duct Dampers
52 It is a platform or car for hoisting or lowering passenger or freight. elevator
53 stops car and grips counterweight in case of emergency governor
54where the endless belt of steps pass around during operation
of an escalatorsprocket assembly
55 What is a closed vessel in which liquid is heated or vaporized? boiler
56 pipe fitting with outside threads use for connecting pipes Closed nipple
57 vessel where vapor is liquefied by removal of heat condenser
58It consists of DC motors and the shaft of which is connected directly to the brake wheel and
driving sheave.gearless traction
59 the art and practice of heating and cooling with water hydronics
60 steel wires used to compensate cars and counterweights hoistropes
61 Two types of passenger elevator. Electric and Hydraulic
62Minimum elevator width of single slide door elevator
for small commercial or residential building.0.60 mtr
63
A device that is basically a double throw switch of
generally 3-pole connection that will automatically transfer
the power from the standby generator to the building
circuitry during electrical power failure.
Automatic Transfer
Switch
64The minimum face to face distance between elevators
in three and four car grouping.2.0 mts.
65 Maximum height of a dumbwaiter. 1.20 mts.
66A controller sensitive to the degree of moisture in the
airHumidistat
67 Another name for Humidistat. Hygrostat
68Descriptive of any material such as synthetic resin
which hardens when heated or cured, and does not softenThermosetting
69
An Instrument which responds to changes in
temperature, and directly or indirectly controls
temperature.
Thermostat
70A machine that converts mechanical energy into
electrical energy, a generator of alternating current.Alternator
71Freon in air-con must be compressed and liquefied in
order to absorb ___.Heat
72A device installed on an electric water heater used to
detect the working temperature to activate a switch.Thermostat
73Vertical flow of air used to separate different functions
of spaces.Air curtain
74
A fire detector installed in a fire alarm system which
uses low melting point solders or metal that expands
when exposed to heat to detect a fire.
Fixed Temperature Heat
Detector
75 Heat rating for a fixed temperature heat detector. 135-197F
76An air-operated device used to open or close a damper or
valveAir Motor
77 The effective room temperature in air-conditioning. 68-74 F /20-23 deg C
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78A graph used in air-conditioning and showing the
properties of air-system mixtures.Psychrometric Chart
79 Heat that raises air temperature. Sensible Heat
80The transmission of heat energy from one place to another
by circulatory movement of a mass of fluid.Convection
81
What is the rating index of an airconditioning/
refrigeration system which rates the unit for the
number of BTU's of heat removed per watt of electrical input
energy? (EER)
Energy Efficiency Rating
82
What mechanical equipment, coupled with a central airconditioning
system, is used to to dehumidify and cool the air
stream injected to a conditioned space.
Fan Coil Unit
83
In elevator, it detects the obstacles during the door closing,
and reopens the door if there is something. Photocell can be
used together with this.
Safety Shoe
84
It prevents passengers from falling into the hoistway when
they try to get out of the car which is stopped between the
floors.
Fascia Plate
85
In elevator, it makes the buzzer alarm when the car is
overloaded and the door remains open until overloading is
eliminated.
Weighing Device
86 In elevator, it protects the equipment from over current. Circuit Breaker
87In elevator, these prevent the excessive car travel at the
highest and lowest floor.Limit Switches
88In escalators, these stop the escalator if a foreign object
becomes wedged at the guard.Handrail Guard Switches
89
In escalators, this is located at the bottom truss of the escalator and provided with on and off
positions to stop or
prevents the escalator from starting during maintenance service.
Disconnect Switch
90
This device, in escalators, is provided at the drive unit
location to protect against accidental movement of the escalator
during inspection of the drives or during general maintenance.
Mechanical Maintenance
Locking Device
91This device, in escalators, stops the escalator automatically
if an abnormal current is supplied to the motor.
Current Overload Safety
Switch
92This switch cuts off all current supply to the escalator for
inspection, maintenance, or repairs.Knife Switch
93The cooling effect obtained when 1 ton of ice at 32 oF (0
oC) melts to water at the same tmeperature in 24 hrs.Ton of Refrigeration
94An assembly consisting of a pulley wheel, side plates,
shaft, and bearings over which a cable or roped is passed.Sheave
95Consist of a flyball or flyweight device designed to stop
an elevator.Governor
96In theater stage house, a weight usually of iron or sand
used to balance suspended scenery, or the like.Counterweight
97
On elevators, a gear-driven machine having a drum to
which the wire ropes that hoist the car are fastened, and on
which they wind.
Winding-Drum Machine
98Vertical tracks that serves as a guide for the car and the
counterweight.Winding-Drum Machine
99In boilers, they function only when it exceeds prescribed
unsafe operating conditions.
Limit Controls and
Interlocks
100 The following are basic component parts of an escalatorexcept____. governor
101 Which of the following is not a component of a hydraulic elevator? counterweight
102The following are elements of centralized airconditioning system
except _______.Method of cooling
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103 A transformer is ______.A mechanical device used to
step up or step down voltage
in ac
104A factor used in calculating cooling load that includes heat
transferred from walls, doors, ceilings, etc. is known as _____.Thermal load
105The following are ways in which heat may be transferred
except____.Polarization
106The typical truss configuration used in the installation of an
escalator.3 section truss
107
Which is the following characterizes centrallized airconditioning a. It uses ducts
b. Has cooling tower
c. Provided with air handling unit
d. All of these
All of these
108
The total cooling output of an airconditioner during its annual
usage, in BTU/hr divided by the energy input during the same period,
in watt-hours is known as_____.
Seasonal energy
efficiency ratio
109
Which type of refrigerant is recommended for residential,
commercial, and industrial application using split type airconditioning
system?
R-22
110The term impedance is used in transformers and other devices in
ac is a combination of _______.
Resistance and
reactance
111A continuous belt (chain) attached to the handrail and directly
connected to the steps is known as _____.Endless belt
112What is the minimum distance between the handrails of
escalators?558mm
113
What aspect/s of environment or surroundings is/are considered
in air-conditioning system for human comfort?
a. Temperature of the surrounding air
b. Motion of air
Both a and b
114 What is the refrigerant name of R-12? Dichlorodifluormethane
115 The recommended speed for escalators ranges from____. 90-120fpm
116The amount of heat which is absorbed or evolved in
changing the state of a substance
LATENT HEAT
117 An apparatus that can heat, cool, clean and circulate air AIR CONDITIONER
118 They were deter to the intrusion alarm system in residential signal systemBUGLARS AND
PROWLERS
119 An air passage usually formed in sheet metal with insulation for ventilating on a building AIR DUCT
120 The current of air or gases DRAUGHT OR DRAFT
121 Requirement for a dry standpipe 4 STOREY
122 Color coding of piping for fuel oil division BLACK
123A hoisting and lowering mechanism with a building equipped with relatively small car
excusively for carrying materialsDUMBWAITER
124 The device for maintaining desirable humidity conditons in the air supplied HUMIDIFIER
125 The average consumption of water per capita 50 GALS.
126An automatic control of the operation of heating or cooling device responding to changes of
temperature of the spaceTHERMOSTAT
127 A tractor equipped with the blade attached by arms and bolted to its end, used in piling earth BULLDOZER
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128 The acoustical ceiling board design to be laid in an exposed grid suspension systemACOUSTICAL LAY IN
PANEL
129 The total sound units provided by a given material DECIBEL
130 Heat rating for a fixed temperature heat detector 135-197 F
131Fire tube boliers shall be provide with sufficient room for removal or replacement of tube
either from these placesREAR OR TOP
132 The process of dissipating sound energy by converting it to heat SOUND ABSORPTION
133The system of deadening sound materials to wall, ceiling, floors to prevent sound from
passing through the members into adjoining roomSOUND INSULATION
134The illuminance produce by luminous flux of the one lumen distributed uniformly over a one
square meter surfaceLUX
135 Level of subterrenean water WATER TABLE
136Package assembly of air conditioning components which provides for the treatment of the
air before it is distributed to an air conditioned spaceAIR HANDLING UNIT
137 This is the criteria in selection of an elevator other than interval and average waiting time TRAVEL TIME
138 Protection of PVC pipe underground CONCRETE CASING
139 Reflection of sound from curve surface CREEP
140 The criteria in the selection of an elevator other than interval and average waiting time TRAVEL TIME
141 Type of conveyor that transport packages equipment crates FREIGHT ELEVATOR
142Important element of an elevator below the first level floor line that absorbs and minimize
building shocks to the carBUFFER
143That portion of the hoistway in the elevator extending from the threshold level of the lowest
landing floor of the hoistwayPIT
144 A geared drive machine in which the suspension ropes are fastened to and wind on a drum WINDING DRUM MACHINE
145 Vertical tracks that serves as a guide for the car and the counterweight GUIDE RAILS
146 Car pit clearance depth from the bottom of the car 600mm
147
When machine room or penthouse is provided at the top of the hoistway, it shall have a
sufficient room for this
FOR REPAIR AND
INSPECTION
148 When 4 or more elevator serve all or the same portion of the bulding 2 HOISTWAYS
149 Shalll be located in any one hoistway 4 ELEVATORS
150 Minimum number of hoisting ropes for traction elevators 3 HOISTWAYS
151 Minimum number of hoisting ropes for drum type elevators 2 HOISTWAYS
152 Minimum diameter of hoisting and counterweight ropes 30mm
153 Provision for all elevators
OVER LOAD RELAY AND
REVERSE POLARITY
RELAY
154
A safety device of a passenger elevator which reduces the collision shock of a car or
counterweight due to over travel beyond the lowest stop. It stops the car or counterweight
safely
BUFFER
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155
Internal electronic safety features of an escalator. They function as a safety switches or
detectors which monitors internal mechanical or electrical abnormalities and shuts down the
system in any eventuality
MONITORING CONTACTS
ON STEP CHAIN
156A passenger elevator safety device which protects the motor and its electrical parts from over
currentCIRCUIT BREAKER
157 During elevator emergency to rescue passenger, this type of elevator is used to open thedoor from the outside
OUTSIDE DOOR LATCH
158The elevator door components that detect the obstacle during the door closing and re opens
the doorSAFETY SHOE
159 Dividing the travel length by the rated speed WAIT INTERVAL
160Activate by preventing the door to open during elevator car run, the door elevator will open
only when the car stops at the floorDOOR LOCK SWITCH
161Activate if the car travel faster than its travel speed, the power will turn off, and grasp the
rope to operate the safety gearMAGNETIC BREAK
162 Main purpose of shafts overhead space FOR CAR OVERRUN
163Safety device of a passenger elevator which activates if the car travels faster than its rated
speed by grasping the guide rail to stop the car safelyGOVERNOR
164 OTIS-U.S.A European brand of
elevator
165
A safety device of a passenger elevator which reduces the collision shock of a car
or counterweight due to over travel beyond the lowest stop. It stops the car or
counterweight safely
BUFFER
166
Internal electronic safety features of an escalator. They function as a safety
switches or detectors which monitors internal mechanical or electrical abnormalities
and shuts down the system in any eventuality
MONITORING CONTACTS
ON STEP CHAIN
167A passenger elevator safety device which protects the motor and electrical parts
from over currentCIRCUIT BREAKER
168During elevator emergency to rescue passenger, this type of elevator is used to
open the door from the outsideOUTSIDE DOOR LATCH
169The elevator door components that detect the obstacle during the door closing and
re opens the doorSAFETY SHOE
170 Dividing the travel length by the rated speed WAIT INTERVAL
171Activate by preventing the door to open during elevator car run, the door elevator
will open only when the car stops at the floorDOOR LOCK SWITCH
172Activate if the car travel faster than its travel speed, the power will turn off,and
grasp the rope to operate the safety gearMAGNETIC BREAK
173 Main purpose of shafts overhead space FOR CAR OVERRUN
174Device that open and closes the electric current in an elevator when it has reached
the designated end of travel courseLIMIT SWITCH
175 Minimum angle of inclination of an escalator 35 degrees
176 Minimum width of balustrade 558 mm
177 Maximum width of balustrade 1.20 m
178 Maximum width of the steps 330 mm
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179 Kind of glass required in an escalator's balustrade TEMPERED TYPE GLASS
180 Maximum rated speed measured along the angle of inclination 38 mpm
181 Provision for boiler rooms inside the buildingR.C CONCRETE OR
MASONRY
182 Minimum distance if the building is not made of fire resistive materials3.00 mts. FROM OUTSIDE
WALL
183 No part of the boiler shall be closer to this from the wall 1 meter
184 Distance of the smokestacks above the building within 50 mts. radius 5.00 mts
185 Provision between any feed pump and the boilerin addition to the regular shut-off valve 2 CHECK VALVES
186 Provision when two or more boilers are connected in parallelNON RETURN OR SHUT
OFF VALVE
187 Provision of every boiler ONE SAFETY VALVE
188 Provision for boilers having generating capacity exceeding 907 kg/hr TWO SAFETY VALVE
189 Notification in writing in advance for boiler's inspection 15 DAYS
190 Temperature and humidity of the air to be used for comfortable cooling 68deg-74deg F
191 Minimum for refrigerant piping crossing a passageway in any building2.30 meters ABOVE THE
FLOOR
192 Provision of installation for refrigerant system containing more than 9 kgs. STOP VALVES
193 Minimum for window type AC installed on ground floors 2.13 meters
194Mechanical equipment coupled with a central air conditioning system used to dehumidify and
cool the airstream injected to the conditioned spaceFAN COIL UNIT
195 Spacing provided for elevator with single bank in a non residential building
.
THE ELEVATOR CAR
196Recording calls even when car is in use. It answer calls starting from the highest and so on
while descending
DOWN COLLECTIVE
CONTROL
197Recording calls even when car is in use. It answer calls starting from the lowest and so on
while ascending
UP COLLECTIVE
CONTROL
198Safety device of a passenger elevator which activates if the car travels faster than its rated
speed by grasping the guide rail to stop the car safely
GOVERNOR - safety gear,
safety shoe, magnetic
break
199 main drive chain, step chain, handrail, drive chain, bottom sprocket ESCALATOR'S PART
200When planning a multiple system of elevator layout where four or more elevator are arrange
in banks
ONE IN FRONT OF THE
OTHER
201 Nominal size of an escalator; escalator's width like those in Japanese brand 1120;980;800;760
202 Nominal size of an escalator; escalator's step like those in Japanese brand 1150;1100;1000;900
203Type of dampers installed at supply ducts, which are electro-mechanically activated by
building automation system to close in case of fire within the area
ADJUSTABLE LOCKING
DAMPERS
204 Location of Control System or computer brain of the escalatorAT THE ESCALATOR
MACHINE ROOM
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205This is a guide for the initial estimate per Ton of Refrigeration per sq.mts. of a standard room
of normal condition without external solar heat gain and excessive internal heat gain
12 to 14 SQ.MT PER TON
OF REFRIGERATION
206PIPING OR DUCT BELONGING TO OTHER SYSTEM SHOULD NOT RUN THROUGH
THE MACHINE ROOM
International Standard and
EN 81.1 Code in designing
a machine room
207THE TOP CHORD OF THE TRUSS IS WITH A STEEL ANGLE SUPERIMPOSED ON THE
BUILDING'S STRUCTURAL BEAM
STANDARD
INSTALLATION OF
ESCALATOR NOT
EXCEEDING 4.50 MTS./
TRUSS
208 Safety device caused by insufficient water flow on heater when brown out PRESSURE RELIEF VALVE
209 Vital part of Solar Water heater to keep the heat in and cold out
POLYTHELYNE FOAM
210 Packaging and assembly of elevator as it arrives on the siteKNOCKDOWN BY MAJOR
COMPONENT PART
211 Cool the condenser unit in a central conditioning system COOLING TOWER
212Rating index of an air conditioning system which rate the number for the unit of BTU heat
moved per watt of electrical input energy
SEASONAL ENERGY
EFFICIENCY
213 Standard unit rating to describe the capacity of the cooling tower TONS OF REFRIGERATION
214A device installed on electric water heater used to detect the working temperature to to
activate a switchTHERMOSTAT
215
A safety device of a passenger elevator which reduces the collision shock of a car or
counterweight due to over travel beyond the lowest stop. It It stops the car or counterweight
safely
BUFFER
216
Rating index of an air conditioning system which rates the unit for the number for BTU of
heat moved per watt of electrical input energy Internal electronic safety features of an
escalator. They function as a safety switches or detectors which monitors internal mechanical
or electrical abnormalities and shuts down the system in any eventuality
MONITORING CONTACTS
ON STEP CHAIN
217A passenger elevator safety device which protects the motor and its electrical parts from over
currentCIRCUIT BREAKER
218The elevator door components that detect the obstacle during the door closing and re opens
the doorSAFETY SHOE
219 Mechanical equipment install on top of the main doors used to retain cold in the interiors AIR CURTAIN
220 Dividing the travel length by the rated speed WAIT INTERVAL
221Major physical restriction does a split type air conditioner system have which restricts its
efficiency and performance
EVAPORATORS CANNOT
BE LOCATED AT CEILING
222Activate by preventing the door to open during elevator car run, the door elevator will open
only when the car stops at the floorDOOR LOCK SWITCH
223 Opening of door for passenger in case of power failure in the elevator OUTSIDE DOOR LATCH
224
Activate if the car travel faster than its travel speed, the power will turn off, and grasp the
rope to operate the safety gear MAGNETIC BREAK
225 Main purpose of shafts overhead space FOR CAR OVERRUN
226 Device that open and closes the electric current in an elevator when it has reached the LIMIT SWITCH
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227 designated end of travel course EMERGENCY SWITCH
228Coupled with central air conditioning system, used to dehumidify and cool the air stream
injected into the conditioned spaceFAN COIL UNIT
229The amount of heat which is absorbed or evolved in changing the state of a substance
without changing its temperature.Latent Heat
230 Two types of passenger elevator. Electric and Hydraulic
231Minimum elevator width of single slide door elevator for small commercial or residential
building.0.60 mtr.
232 Another name for passenger elevator. Lift
233 The minimum face to face distance between elevators in three and four car grouping. 2 mts.
234 Maximum height of a dumbwaiter. 1.20 mts.
235An assembly consisting of a pulley wheel, side plates, shaft, and bearings over which a cable
or roped is passed.Sheave
236 A device for converting alternating current to direct current. Rectifier
237 Another name for a Rectifier. D.C. Generator
238 A controller sensitive to the degree of moisture in the air. Humidistat
239 Another name for Humidistat. Hygrostat
240 Consist of a flyball or flyweight device designed to stop an elevator. Governor
241 A stop valve placed in the service pipe close to the connection at the water main. Corporation Stop
242 An Instrument which responds to changes in temperature, and directly or indirectly controlstemperature.
Thermostat
243 Thin sheets that are used for controlling heat in drywall construction. Rigid Board Insulation
244A machine that converts mechanical energy into electrical energy, a generator of alternating
current.Alternator
245 Freon in air-con must be compressed and liquefied in order to absorb ___. Heat
246A device installed on an electric water heater used to detect the working temperature to
activate a switch.Thermostat
247During elevator emergency, to rescue passengers, this part of the elevator is used to open
the doors from the outside.Outside Door Latch
248A device which extends across at least 1/2 the width of each door leaf which will open if
subjected to pressure. Panic Bar
249 Heat rating for a fixed temperature heat detector. 135-197F
250An automatic device used for converting high, fluctuating inlet water pressure to a lower
constant pressure.
Pressure Regulating
Valve
251 An air-operated device used to open or close a damper or valve. Air Motor
252In theater stage house, a weight usually of iron or sand used to balance suspended scenery,
or the like.Counterweight
253On elevators, a gear-driven machine having a drum to which the wire ropes that hoist the car
are fastened, and on which they wind.Winding-Drum Machine
254 Vertical tracks that serves as a guide for the car and the counterweight. Guiderails
255Under NBC, the clearance between the underside of the car and the bottom of the pit shall
not be less than ___.600 mm
256 Under NBC, the minimum diameter of hoisting and counterweight rope. 30 mm
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257 Under NBC, the minimum width between balusters in an escalator. 558 mm
258 Under NBC, the maximum rated speed of an escalator along the angle of travel. 38 Meters/Min
259 The effective room temperature in air-conditioning. 68-74 F
260Sound system input device that reacts to and converts variable sound pressure into variable
electrical current. Microphone
261 A rate of rise type detector. Thermal Detector
262 A graph used in air-conditioning and showing the properties of air-system mixtures. Psychrometric Chart
263 Heat that raises air temperature. Sensible Heat
264The transmission of heat energy from one place to another by circulatory movement of a
mass of fluid.Convection
265 In boilers, they function only when exceeds prescribed unsafe operating conditions.Limit Controls and
Interlocks
266 What mechanical equipment, coupled with a central air-conditioning system, is used to todehumidify and cool the air stream injected to a conditioned space.
Fan Coil Unit
267In elevator, it detects the obstacles during the door closing, and reopens the door if there is
something. Photocell can be used together with this.Safety Shoe
268It prevents passengers from falling into the hoistway when they try to get out of the car which
is stopped between the floors.Fascia Plate
269In elevator, it makes the buzzer alarm when the car is overloaded and the door remains open
until overloading is eliminated.Weighing Device
270 In elevator, it protects the equipment from over current. Circuit Breaker
271 In elevator, these prevent the excessive car travel at the highest and lowest floor. Limit Switches
272 In escalators, these stop the escalator if a foreign object becomes wedged at the guard. Handrail Guard Switches
273In escalators, this is located at the bottom truss of the escalator and provided with on and off
positions to stop or prevents the escalator from starting during maintenance service.Disconnect Switch
274This device, in escalators, is provided at the drive unit location to protect against accidental
movement of the escalator during inspection of the drives or during general maintenance.Mechanical
275This device, in escalators, stops the escalator automatically if an abnormal current is
supplied to the motor.
Current Overload Safety
Switch
276 This switch cuts off all current supply to the escalator for inspection, maintenance, or repairs. Knife Switch
277The cooling effect obtained when 1 ton of ice at 32 oF (0 oC) melts to water at the same
tmeperature in 24 hrs. (equivalent to 12,000 Btu/hr)Ton of Refrigeration
278
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