all subjects - arhitecture reviewer

7/23/2019 All Subjects - Arhitecture Reviewer

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PREPARED BY:

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


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


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


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


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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