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this subject will come in 6th sem-so ny1 interestd can get it from here now onwards
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AS
SIG
NM
EN
T:
CA
SE
ST
UD
Y:
OL
D P
AS
SE
NG
ER
LIF
T
FA
CU
LTY
: M
R.B
IPIN
SH
AH
LIF
T &
FIR
E S
AF
ET
Y
SUBMITTED BY:
RAHUL N.SOMPURA (
ARTH
SCHOOL OF BUILDING SCIENCE &TECHNOLOGY,
CEPT UNIVERSITY
SUBMITTED BY:
N.SOMPURA (2905)
ARTH J.VIN (3105)
SCHOOL OF BUILDING SCIENCE &TECHNOLOGY,
CEPT UNIVERSITY
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
2 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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TABLE OF CONTENTS
INTRODUCTION ..................................................................................................................... 3
TECHNICAL DETAILS ............................................................................................................... 4
QUANTITY OF SERVICE: ...................................................................................................... 4
QUALITY OF LIFT .................................................................................................................. 12
QUALITY OF SERVICE ........................................................................................................ 12
INSIDE THE CAR ............................................................................................................... 12
OUTSIDE HOISTWAY ........................................................................................................ 13
MACHINE ROOM ............................................................................................................. 14
TOP OF CAR ..................................................................................................................... 15
PIT ................................................................................................................................... 18
FREQUENTLY ASKED QUESTIONS ......................................................................................... 21
CONCLUSION ....................................................................................................................... 22
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
3 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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INTRODUCTION
NAME OF THE SITE SHAKAMBA TOWERS,GURUKUL,MEMNAGAR
DATE OF LIFT INSTALLATION 14/03/1992
TYPE OF LIFT PASSENGER LIFT
NO.OF LIFT PER TOWER 1
SPEED: 0.8 m/s
LIFT CAPACITY 272 KG(4 PASSENGERS)
CONTROL TWO SPEED AC
POWER: 3 PHASE POWER SUPPLY
TRAVEL 30 meters
TOTAL FLOORS 10 FLOORS
MACHINE ROOM LOCATION AT TERRACE
OPERATION TYPE MANUAL OPERATION
HOIST WAY 1300x1400 mm PER LIFT,2 HOISTWAY SEPARATED BY
ISMB500
CAR INSIDE 900x900 mm
LIFT WELL 1400x1500 mm
ENTRANCE 700 mm
CLEAR OPENING FOR DOOR
FRAME 1175 mm
DOOR FRAME HEIGHT 2350 mm
CAR ENTRANCE DOOR TYPE COLLAPSIBLE STEEL DOORS
COUNTERWEIGHT POSITION BEHIND THE CAR MADE OF WROUGHT IRON BLOCKS
SUSPENSION ROPE 3-16 mm ø ,3-10 mm ø & 2-8 mm ø ROPES USED
OVERSPEED GOVERNER TRIPPING SPEED :1.2 m/s, ROPE DIA-8mm
SIGNALS INSIDE CAR Up Indication
Down Indication
Digital car position
Push button for each floor (BECALITE)
Auto/Attendant key switch.
Car ventilation
Car light
Alarm Switch
Stop Switch
Switches for up and down run of car
ON TOP OF CAR Up push button
Down push button
IN THE MACHINE ROOM Up push button
Down push button
Inspection switch
ON EACH LANDING Up Indication
Down indication
Digital car position
RAHUL N.SOMPURA (2905)
TECHNICAL DETAILS
QUANTITY OF SERVICE:
HANDLING CAPACITY OF LIFT (FROM MORNING 6:00 AM TO NIGHT 9:00 PM)
TIME 6:00 6:05 6:10
ARRIVAL 2 2 3
TIME 7:00 7:05 7:10
ARRIVAL 8 9 9
0
1
2
3
4
5
6
7
8
9
6:00RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)HANDLING CAPACITY 6:00
0
2
4
6
8
10
12
14
16
7:00 7:05RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 7:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
FROM MORNING 6:00 AM TO NIGHT 9:00 PM)
6:15 6:20 6:25 6:30 6:35 6:40 6:45 6:50
3 4 4 5 5 6 6 7
7:15 7:20 7:25 7:30 7:35 7:40 7:45 7:50
10 10 11 11 13 14 11 10
6:00 6:05 6:10 6:15 6:20 6:25 6:30 6:35 6:40 6:45 6:50
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 6:00-7:00
7:10 7:15 7:20 7:25 7:30 7:35 7:40 7:45 7:50 7:55 8:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 7:00-8:00
ARTH J.VIN (3105)
4 STUDY: OLD PASSENGER LIFT
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6:50 6:55 7:00
7 8 8
7:50 7:55 8:00
10 9 9
6:55 7:00
8:00
RAHUL N.SOMPURA (2905)
TIME 8:00 8:05 8:10
ARRIVAL 9 10 11
TIME 9:00 9:05 9:10
ARRIVAL 9 8 7
0
2
4
6
8
10
12
14
16
18
8:00 8:05RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 8:00
0123456789
10
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 9:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
8:15 8:20 8:25 8:30 8:35 8:40 8:45 8:50
12 13 14 16 16 17 14 11
9:15 9:20 9:25 9:30 9:35 9:40 9:45 9:50
6 6 6 5 6 5 7 6
8:10 8:15 8:20 8:25 8:30 8:35 8:40 8:45 8:50 8:55 9:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 8:00-9:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 9:00-10:00
ARTH J.VIN (3105)
5 STUDY: OLD PASSENGER LIFT
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8:50 8:55 9:00
11 10 9
9:50 9:55 10:00
6 6 8
9:00
RAHUL N.SOMPURA (2905)
TIME 10:00 10:05 10:10
ARRIVAL 8 7 6
TIME 11:00 11:05 11:10
ARRIVAL 11 13 14
0
2
4
6
8
10
12
14
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 10:00
0
2
4
6
8
10
12
14
16
18
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 11:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
10:15 10:20 10:25 10:30 10:35 10:40 10:45 10:50
5 6 7 8 10 11 12 11
11:15 11:20 11:25 11:30 11:35 11:40 11:45 11:50
15 16 15 14 13 12 12 11
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 10:00-11:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 11:00-12:00
ARTH J.VIN (3105)
6 STUDY: OLD PASSENGER LIFT
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10:50 10:55 11:00
11 10 11
1:50 11:55 12:00
11 11 11
RAHUL N.SOMPURA (2905)
TIME 12:00 12:05 12:10
ARRIVAL 11 12 12
TIME 13:00 13:05 13:10
ARRIVAL 6 5 4
0
2
4
6
8
10
12
14
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 12:00
0
1
2
3
4
5
6
7
8
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 13:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
12:15 12:20 12:25 12:30 12:35 12:40 12:45 12:50
11 10 9 9 8 7 7 6
13:15 13:20 13:25 13:30 13:35 13:40 13:45 13:50
5 5 4 6 6 7 6 5
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 12:00-13:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 13:00-14:00
ARTH J.VIN (3105)
7 STUDY: OLD PASSENGER LIFT
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12:50 12:55 13:00
6 7 6
13:50 13:55 14:00
5 5 4
RAHUL N.SOMPURA (2905)
TIME 14:00 14:05 14:10
ARRIVAL 4 4 4
TIME 15:00 15:05 15:10
ARRIVAL 4 4 4
0
1
2
3
4
5
6
RA
TE
OF
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RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 14:00
0
1
2
3
4
5
6
RA
TE
OF
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AL(
PE
RS
ON
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ER
5
MIN
UT
ES
)
HANDLING CAPACITY 15:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
14:15 14:20 14:25 14:30 14:35 14:40 14:45 14:50
5 5 4 4 4 4 4 4
15:15 15:20 15:25 15:30 15:35 15:40 15:45 15:50
4 4 3 3 3 4 4 4
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 14:00-15:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 15:00-16:00
ARTH J.VIN (3105)
8 STUDY: OLD PASSENGER LIFT
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14:50 14:55 15:00
4 4 4
15:50 15:55 16:00
4 5 5
RAHUL N.SOMPURA (2905)
TIME 16:00 16:05 16:10
ARRIVAL 5 5 6
TIME 17:00 17:05 17:10
ARRIVAL 6 6 7
0
1
2
3
4
5
6
7R
AT
E O
F A
RR
IVA
L(P
ER
SO
NS
PE
R 5
MIN
UT
ES
)
HANDLING CAPACITY 16:00
0
1
2
3
4
5
6
7
8
9
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 17:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
16:15 16:20 16:25 16:30 16:35 16:40 16:45 16:50
6 6 6 6 6 5 5 5
17:15 17:20 17:25 17:30 17:35 17:40 17:45 17:50
7 7 7 7 7 7 8 8
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 16:00-17:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 17:00-18:00
ARTH J.VIN (3105)
9 STUDY: OLD PASSENGER LIFT
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16:50 16:55 17:00
5 5 6
17:50 17:55 18:00
8 8 8
RAHUL N.SOMPURA (2905)
TIME 18:00 18:05 18:10
ARRIVAL 8 9 9
TIME 19:00 19:05 19:10
ARRIVAL 13 14 15
0
2
4
6
8
10
12
14
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 18:00
0
2
4
6
8
10
12
14
16
RA
TE
OF
AR
RIV
AL(
PE
RS
ON
S P
ER
5
MIN
UT
ES
)
HANDLING CAPACITY 19:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
18:15 18:20 18:25 18:30 18:35 18:40 18:45 18:50
10 10 10 11 11 12 12 13
19:15 19:20 19:25 19:30 19:35 19:40 19:45 19:50
15 14 13 12 11 10 10 10
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 18:00-19:00
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 19:00-20:00
ARTH J.VIN (3105)
10 STUDY: OLD PASSENGER LIFT
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18:50 18:55 19:00
13 13 13
19:50 19:55 20:00
10 11 10
RAHUL N.SOMPURA (2905)
TIME 20:00 20:05 20:10
ARRIVAL 10 9 8
• HENCE FROM THE STUDY THE PEAK PERIOD IS IN THE MORNING TIME FROM 8:30 TO
8:50 AM
• THE MAXIMUM POPULATION HANDLED DURING PEAK PERIOD=17
• HENCE HANDLING CAPACITY (H) OF THE LIFT IS CALCULATED BY THE FOLLOWING
FORMULA
•
• Q=80% OF MAX CAR CAPACITY =
• T=WAITING INTERVAL IN SECONDS=
FROM GROUND FLOOR TO TOP FLOOR)
• P=TOTAL POPULATION TO BE HANDLED DURING PEAK PERIOD=
• THEREFORE H=300x3x100/(
= 90000/6075
= 14.81 %
• HENCE THE HANDLING CAPACITY OF THE LIFT IS QUITE SUFFICIENT AS COMPARED
TO THE PRESCRIBED HANDLING CAPACITY OF 5%
0
2
4
6
8
10
12R
AT
E O
F A
RR
IVA
L(P
ER
SO
NS
PE
R 5
MIN
UT
ES
)
HANDLING CAPACITY 20:00
2905) ARTH
LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
20:15 20:20 20:25 20:30 20:35 20:40 20:45 20:50
8 7 8 7 8 8 7 7
HENCE FROM THE STUDY THE PEAK PERIOD IS IN THE MORNING TIME FROM 8:30 TO
THE MAXIMUM POPULATION HANDLED DURING PEAK PERIOD=17
HENCE HANDLING CAPACITY (H) OF THE LIFT IS CALCULATED BY THE FOLLOWING
80% OF MAX CAR CAPACITY =AVERAGE NO. OF PASSENGERS CARRIED BY CAR =
T=WAITING INTERVAL IN SECONDS= 37.5 seconds(CONSIDERING LIFT MOVING
FROM GROUND FLOOR TO TOP FLOOR)
P=TOTAL POPULATION TO BE HANDLED DURING PEAK PERIOD=162
300x3x100/(37.5x162)
6075
HENCE THE HANDLING CAPACITY OF THE LIFT IS QUITE SUFFICIENT AS COMPARED
TO THE PRESCRIBED HANDLING CAPACITY OF 5%
1 HOUR HANDLING CAPACITY
HANDLING CAPACITY 20:00-21:00
ARTH J.VIN (3105)
11 STUDY: OLD PASSENGER LIFT
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20:50 20:55 21:00
7 7 7
HENCE FROM THE STUDY THE PEAK PERIOD IS IN THE MORNING TIME FROM 8:30 TO
HENCE HANDLING CAPACITY (H) OF THE LIFT IS CALCULATED BY THE FOLLOWING
CARRIED BY CAR = 3
(CONSIDERING LIFT MOVING
HENCE THE HANDLING CAPACITY OF THE LIFT IS QUITE SUFFICIENT AS COMPARED
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
12 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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QUALITY OF LIFT
QUALITY OF SERVICE
• The average waiting interval of the lift is 37.5 seconds hence it is satisfactory
• The quality of the lifts is sufficient enough with regular monthly maintenance
provided for which each resident has to pay Rs.400 extra for lift maintenance. The
maintenance procedure for these lifts is provided as follows:
INSIDE THE CAR
1.1 CAR INTERIOR
Examine the car interior for damage including ceiling, handrails, door panels, door astragals,
lighting, and floor. Tighten all fasteners in the car panel and replace as needed. Check
operation of ventilation fan and clean as needed.
1.2 CAR CONTROLS & PANEL
Examine the car control panels and position indicators for condition and operation of all
lamps. Replace all burned out lamps. Check operation of key operated stop switch with the
car stopped near/at the top terminal. Use key to check operation on independent service.
1.3 LEVELING, STOPPING, ACCELERATION AND DECELERATION
Operate to each floor in both directions and observe the leveling accuracy, Stopping,
acceleration and deceleration. Then make several multi-floor runs and check leveling
accuracy. This elevator should level within ½ inch of landing at each stop. Observe
acceleration and deceleration for smooth transition. Adjust as needed.
1.4 CAR DOOR OPERATION
Observe the door for proper operation including speed, smooth movement, starts and stops
without slamming and bouncing. Check the door closing time; it should be between 2.5 and
2.8 seconds and opening time should be 2.1 seconds and the door dwell time for car calls
should be at between three and five seconds. Note any roughness or noise to be checked
from the car top. Test the door closing force and adjust to between 20 and 25 Ibf. If
necessary, examine operation of the mechanical door reopening device. It should operate
with a gentle touch and movement of ½ inch or less, check the lens and reflectors on the
photo devices located at five and 29 inches from the floor. Verify that they will hold to door
open for at least 20 seconds before it goes into nudging.
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
13 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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1.5 RIDE TERMINAL TO TERMINAL
Run the car from terminal to terminal and observe for smooth travel and unusual noises.
Listen for the door hitting sills or fascias. Note any vibration as car approaches the terminal
landings. Observe operation of position indicator lights and audible signal when passing
floors. Make all needed repairs or adjustments. Note any noise or roughness to be checked
from the car top.
1.6 CAR LIGHTS & VENTILATION
Observe car lighting and ventilation openings. Report any need for maintenance or repairs
to the building manager and your supervisor. Check operation of ventilation fan, clean and
repair as needed. Also Verify proper operation of the car emergency light and repair as
needed.
1.7 RESTRICTED OPENING DEVICE MECHANISM
Examine the restricted opening device mechanism for proper operation. Adjust so that it
will not allow the car door to be opened more than four inches if the car is 18 inches or
more from the landing.
OUTSIDE HOISTWAY
2.1 HALL CALL STATION AND LANTERNS
Examine hall stations and directional lanterns for condition. Replace all burned out lamps in
buttons and lanterns. Note operation of audible signal of car arrival (once for up and twice
for down). Make any needed repairs. Verify that the door dwell time for hall calls is at least
five seconds and not more than eight se6onds.
2.2 HOISTWAY DOORS
Examine door panel and clearance between panels and entrance frame. This clearance must
be less than 3/8 inch. This should be measured with a light force on the door panel to
include bottom sill gib wear.
2.3 HOISTWAY DOOR UNLOCKING DEVICE ACCESS
Examine the hoistway door unlocking device access escutcheon for damage that could allow
the door to be opened with ordinary tools.
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
14 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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MACHINE ROOM
3.1 HOUSEKEEPING
Clean the machine room floor to prevent slipping and tripping hazards, fire hazards and
contamination of the equipment. All drip pans should be emptied and the oil discarded in
the waste oil contained Log the quantity of oil discarded and compare to the quantity of oil
added to detect underground oil leaks. Always open lock out and tag-out the mainline
disconnect, when cleaning under motors, pumps and belts. Also note temperature in the
machine room.
3.3 PUMPING UNIT INCLUDING MOTOR
Before removing cover allow the unit to run and examine for:
• Noise such as belts slipping or loose pump or motor mountings
• Excessive or unusual vibration
• Hammering or heavy vibration as the car approaches the top floor may be caused by
cavitation due to low oil level or restriction in the pump intake,
• Excess contact noise or other evidence of improper starter operation
Remove the cover or guard and examine the pump unit with power off for:
• Excess oil leaking around pump shaft seals and pipe connections. Empty all oil drip
pan containers and record the quantity of oil discarded.
• Condition of belts including tightness and fit in sheave groove. If belts are worn,
make a note to obtain a new matched set for replacement.
• Excessive motor temperature /
• Motor lubrication. This hydraulic pump motor has sealed bearings and does not
require lubrication.
3.4 CONTROL VALVE
Examine the control valve for
• Leaks around the control body and pipe connections.
• Relief valve seal is in place to prevent changing the adjustment without breaking the
seal
• Wiring and solenoid covers in place
3.5 TANKS
Examine tank for:
• Leak
• Cover is in place
• Adequate oil level. Run car to top landing and use the dip stick to gauge adequate oil
level discarded from leak drip pans. If more oil is added than is discarded, a possible
underground leak is indicated.
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
15 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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• Condition of oil indicating excess foaming and contamination
• Burning odor and report/if found
• Excessive oil temperature
• Replace the tank covered vent opening
3.6 PIPING, MUFFLER AND MANUAL VALVE
Examine for:
• Leaks and loose connections
• Adequate support, especially note any movement when the elevator is operating
• Grooved pipe fittings for secure bolting of housing segments and pad to pad
connection. If a grooved pipefitting is leaking, replacement is required.
3.7 CONTROLLER AND MOTOR STARTER
Examine the controller and motor starter for:
• With the mainline disconnect opened locked-out and tagged-out clean the controller
with a vacuum.
• Contacts for condition and remaining contact material
• Especially examine the motor starter contacts for pitting (welding) and condition of
the arc quenchers and terminal tightness.
• Examine compression springs for condition. c. Fuses for correct size and fit in
holders and corrosion in fuse holder. Fuse size and type are marked adjacent to each
fuse clip.
• Relays for worn shunts and sign of overheating.
• Lubricate the pivots of the power contactors with one or two small drops of machine
oil (low viscosity like used in a sewing machine).
• Examine all connections for evidence of overheating.
TOP OF CAR
4.1 STOP SWITCH
Before entering the top-of-car, place the stop switch in the stop position. Then allow the
doors to close and verify that the car will not run.
4.2 TOP-OF-CAR OPERATING DEVICE AND LIGHT
Examine the top of car operating device and test for proper operation. Any needed repairs
must be made to the top-of-car operating device, stop switch and light before proceeding
with other maintenance. Always maintain the guard on the top car light. If the guard is
missing must be replaced. Make any needed repairs.
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
16 LIFT & FIRE SAFETY: CASE STUDY: OLD PASSENGER LIFT
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4.3 CLEANLINESS
Clean all debris and any oil stains or puddles from the car top. Never store anything,
including tools, parts or lubricants, on the car top. Verify that the top car exit is secured so
that it cannot be opened from inside the car.
4.4 TOP CAR GUIDE
Examine roller guide tire conditions as well as fit and alignment with the rail. Examine and
adjust rollers for firm contact with the rails so that they can be just barely turned by hand.
Lubrication the pivot bushing with a couple of drops of (3 in 1) machine oil through the hole
in the housing.
4.5 GUIDE RAILS
Examine the guide rails for loose fastenings and fit at the joints.
4.6 SELECTOR TAPE
Examine the stationary selector tape by shining a flashlight beam parallel with the tape and
sighting to detect any bends or cracks. Examine the sensor guides on stationary tape for
wear. If the guide groove is twice the width of the tape thickness, it should be replaced.
Examine the magnets on tape for grime buildtip0or materials that may interfere with their
operation.
4.7 TRAVELING CABLES
Examine the traveling cables for wear, chafing, kinking and aliment. Examine attachment
points for secure fastening and looseness. Examine for chafing points, i.e. beams, bolts,
rough wall etc. If found, protect as necessary. Examine the automatic tightening means for
slippage of the cable through the grips.
4.8 DOOR OPERATOR
Examine door operator for:
• Loose parts including all fastening.
• Lubrication in gear reducer and shaft bearings.
• Condition and tightness of V belts.
• Set screws, keys and pulleys are moved out of position
• Clean the drive chain with brush to remove dust accumulation. If necessary, lubricate
lightly at the sprocket with special chain lubricant (White Lightening). Wipe off
excess.
• Condition of cam and switches
• Clean control boards, cams, etc with brush and vacuum
• Door operator motor brushes and condition of commutator
• Sound isolation mounting for damage, if used
RAHUL N.SOMPURA (2905) ARTH J.VIN (3105)
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4.9 DOOR HANGERS, LOCKS, ETC.
• Attempt to open the hoistway door without unlocking to verify that the interlock is
functioning properly.
• Move the interlock pickup and manually open the door. Then verify that it will close
when released at any position.
• With the door open attempt to move the car using the top-of-car operating device.
• Manually open the door and allow it to close to observe any roughness in the roller
bearings, tires or track. Also, listen for noise that may indicate dragging or
• binding.
• Check the upthrust clearance and adjust for 0.008 inches clearance,
• Visually examine the upthrust, hanger and relating cables for damage and need for
adjustment.
• Note the overlap of door panel and door frame and multiple speed panels when the
door is closed. It should be atleast 5/8 inch. Worn or missing resilient stops,
adjustment or relating devices can affect the overlap. Adjust and/or replace resilient
stops as needed. Move the car down and examine the sill guides for wear, looseness
and damage. Tighten the mounting brackets when necessary. Verify that the guides
and
• metal parts engage the sill track at least ½ inch. Also, verify the clearance between
the bottom of the door panel and sill is less than 3/8 inch and the panels are not
dragging on the sill.
• Examine the astragals for wear and damage
• Examine the sight guards for damage and secure fastening to the door panels.
• Examine the fascia plate fastenings for tightness. Examine door closing device
including, air cord and attachments for fraying and damage.
• Attempt to move the bottom of the panel open. It should move no more than one
inch per panel with 30 Ibf. If it moves more, the upthrust roller probably needs to be
adjusted to run closer to the track. The clearance between the upthrust roller and
track should be adjusted to 0.008 inch.
• Examine the hoistway door unlocking device brackets and tabs for proper position.
4.10 CAR FAN
• Clean car ventilation and fan opening. If necessary, remove the fan and clean the
blades or squirrel cage. At six months, place one drop of oil (3 in 1) on each end of
fan motor shaft.
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4.11 HOISTWAY CLEANING
• Clean dirt and trash from all horizontal surfaces including car and entrance sills. Pick
up large pieces with a dustpan and brush. Use a shop vacuum to remove small items
and dirt when necessary. Do not clean by blowing the trash. Be on the lookout for
any hazardous object or material in the trash. Dispose of the trash in the dumpster
by the rear dock.
4.12 OTHER
Note and report any problems in or within the hoistway that should be addressed such as:
• Unauthorized equipment installed in the hoistway such as electrical wiring,
telephone wiring, grounding from roof antennas, antenna wiring, water piping.
• Damage to the hoistway enclosure that would affect its fire resistance rating.
• Evidence of intentional acts such as pouring or sweeping liquids and trash over the
entrance sills into the hoistway
• Any evidence of unauthorized people entering the hoistway
4.13 LEAVING CAR TOP
• When leaving the car top, remove all tools and supplies (i.e. Car top stop switch to
stop position, return to normal operation, Turn off the light, step off and return stop
switch to run position.)
• Never store lubricants, tools, supplies or anything on the car top. Do not leave the
car top on the third or fourth floor where the light colored carpet is in the halls.
• Always clean your shoes to prevent tracking oil or dirt on the building floor. Allow
the door to close, place a call and verify that the car operates correctly before
removing out of service signs.
PIT
5.1 STOP SWITCH AND LIGHT
• Examine operation and condition of the stop switch before entering the pit. Place
the top switch in the stop position and close the doors to verify that it will prevent
operation of the elevator.
• If the stop switch does not function properly, it must be repaired before and other
work is done. Also, make any needed repairs to the pit light.
5.2 CLEANING
• The pit should be cleaned using a dustpan and broom. Never pick up trash with your
bare hand. Also, examine the bottom level landing sills and clean as needed.
Return any valuable, keys or other items to the building management. Examine the
fascia below the lower landing for secure fastening.
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5.3 BOTTOM CAR GUIDES
• Examine lower roller guides for:
• Condition of the tires and fit on the rail. If needed adjust for firm fit against the rail,
so that they can be just barely turned by hand.
• Alignment with the rail
• Evidence of wear of support pivots
• Lubrication the pivot bushing with a couple of drops of (3 in 1) machine oil through
the hole in the housing
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MAINTENANCE CHECK CHART FOR YEAR 2007
Building Address: Shakamba Towers, Opp. Sterling Hospital, Gurukul rd,Memnagar-380052
Elevator ID #1 Location in Blocks ‘A’ 'B' & ‘C’
INSIDE CAR Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1.1 Car interior * * * * * * * * * * * *
1.2 Car controls & Panel * * * * * * * * * * * *
1.3 Leveling, Stop, Accel & Decel
* * * * * * * * * * * *
1.4 Car doors operation *
*
*
*
*
*
1.5 Ride Terminal /Terminal * * * * * * * * * * * *
1.6 Car lights & Ventilation * * * * * * * * * * * *
1.7 Door Restrictors * * * * * * * * * * * *
OUTSIDE HOISTWAY
2.1 Hall call station/lanterns * * * * * * * * * * * *
2.2 Hoistway doors *
*
*
*
*
*
2.3 Unlocking device access * * * * * * * * * * * *
2.4 Firefighters Service tests * * * * * * * * * * * *
MACHINE ROOM
3.1 Housekeeping * * * * * * * * * * * *
3.2 Trash & used parts & oil * * * * * * * * * * * *
3.3 Pumping Unit & motor * * * * * * * * * * * *
3.4 Control valve * * * * * * * * * * * *
3.5 Tank * * * * * * * * * * * *
3.6 Piping, Muffler & Valves * * * * * * * * * * * *
3.7 Controller and Starter * * * * * * * * * * * *
TOP OF CAR
4.1 Top car Stop Switch * * * * * * * * * * * *
4.2 Operator & light * * * * * * * * * * * *
4.3 Cleanliness * * * * * * * * * * * *
4.4 Top Guides * * * * * * * * * * * *
4.5 Guide Rails * * * * * * * * * * * *
4.6 Selector Tape * * * * * * * * * * * *
4.7 Traveling Cables * * * * * * * * * * * *
4.8 Door Operator * * * * * * * * * * * *
4.9 Doors, Hangers, Locks
*
*
*
*
*
*
4. 10 Car Fan
*
*
4.11 Hoistway Cleaning
*
*
4. 12 Other * * * * * * * * * * * *
4.13 Leaving Car Top * * * * * * * * * * * *
PIT
5.1 General and Safety * * * * * * * * * * * *
5.2 Stop Switch & Light * * * * * * * * * * * *
5.3 Cleaning * * * * * * * * * * * *
5.4 Bottom Car Guides * * * * * * * * * * * *
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FREQUENTLY ASKED QUESTIONS
Q1. Is the License of the Lift available or not? If not, why?
Ans. Yes the License for the lift is available and it’s been renewed time and again.
Q2. What are the problems in relation to maintenance?
Ans. The lift is adequately maintained with regular monthly inspection and there no
bothersome problems which can affect the smooth working of the lift.
Q3. Is the system installed properly working or not?
Ans. Yes the lift is properly working for 24 hours every day.
Q4. What is the opinion of the user?
Ans. The user is satisfied with the lift’s working and feels even more satisfied since the
money they are spending in its maintenance is adequately utilized.
Q5. Can the lift be updated?
Ans. Yes it can be updated to increase its efficiency.
Q5. What are the possible solutions?
Ans. The waiting interval of the lift can be improved from 37.5 seconds to 34 seconds if the
collapsible doors can be replaced with hydraulic doors or with Centre opening doors.
Q6. Does it fulfill the requirement of user?
Ans. With reference to handling capacity it is quite sufficient and plus the user’s opinion is
also optimistic thereby proving it the fulfill the user’s requirement
Q7. Is the frequency to call the maintenance people sufficient?
Ans. Yes the frequency to call the maintenance people is sufficient since the lift is serviced on
a monthly basis.
Q8. Is there any problem like too much waiting interval etc. faced by the user? Did the
user fix the problem? Was that solution satisfactory enough?
Ans. Few years ago there were complaints that the lift had too much waiting interval which
was around 45 seconds due to poor maintenance of doors which was the main reason. So all
the doors were replaced by newer ones which improved the waiting interval to 37.5 seconds.
The solution did satisfy the user.
Q9. Has there been any accident reported uptil now?
Ans. No there are no reports of any accident happening in the lift from the time since the lift
was installed
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CONCLUSION
From the case study of we come to the following conclusions, they are as follows:
• QUANTITY OF LIFT:
o The lift has adequate handling capacity of 14.81% which is quite sufficient for
residential buildings. Hence it is very efficient in terms of quantity.
• QUALITY OF LIFT:
o The lift has a fair amount of waiting interval of 37.5 seconds which can be
improved further
o However the lift is adequately maintained, hence satisfying its users. Its
monthly maintenance is quite sufficient to maintain the lift’s quality
Hence the lift that we studied is sufficient both in terms of QUANTITY & QUALITY. However
with certain modifications the lift would be even better