1. Introduction
2. Key Model Framework
2.1
O&M Input on Design for New Building
2.2
Asset Information (Documentation)
2.3
Operation Procedures
2.4
Emergency Preparedness
2.5
Preventive Maintenance Procedures / Standards
2.6
Corrective Maintenance
2.7
Maintenance Record Management
2.8
Spare Parts Management
2.9
Addition, Alteration and Replacement (Planning and Implementation)
2.10
Incident Management
2.11
Environmental and Safety Management
2.12
Application of Technologies
2.13
Stakeholder Management
2.14
Information Management
2.15
Structure and Qualification of O&M Team
3. Innovative & Technology Initiatives
4. Industry Standards and Requirements
Useful Forms/ Check List – Samples
5. Useful Forms/ Check List – Samples
5.1 Check List for Periodic Maintenance of a Lift
For keeping the lift and its associated equipment or machinery in safe working order, at least the following applicable items are to be checked for proper condition, and attended to if necessary, in accordance with schedule recommended by the lift manufacturer :
| Maintenance Items | Examples of checks |
|---|---|
|
a)
Lift machine gearbox and bearing
|
Check condition |
|
b)
Traction Machine, including motor shaft, bolts connection worm gear and flange of the
traction sleeve
|
Check operation Check bearing for wear Check lubrication |
|
c)
Brake
|
Check braking system Check part for wear Check stopping accuracy |
|
d)
Overspeed Governor and tension pulley
|
Check moving parts for free movement and wear Check operation Check switch |
|
e)
Drum, sheaves, grooves of sheaves and pulley
|
Check condition and grooves for wear |
|
f)
Commutators and slip rings of motor generator set
|
Check condition |
|
g)
Controllers contact, interlock and dashpots
|
Check cabinet is clean, dry and free from dust |
|
h)
Floor selector generator set
|
Check operation |
|
i)
counterweight guide shoes and lubricatorsand pulley
|
Check Guideshoes, rollers for wear Check fixings Check lubrication where necessary |
|
j)
lift well cleanliness and condition of lift well enclosure
|
Check cleanliness and condition of lift well enclosure |
|
k)
guides and fixings
|
Check for deterioration and wear |
|
l)
limit switches, direction switches and their operating devices
|
Check operation |
|
m)
car door and landing door
|
Check door closed contact or lock Check doors for free running Check door guiding Check door gaps Check wire rope or chain when used for integrity Check passenger door protective device Check lubrication |
|
n)
car guide shoe and lubricators, tensioning devices and door operating gear
|
Check operation |
|
o)
any irregularities in starting, stopping and general running of the lift
|
Check operation |
|
p)
car controls, car door switches, safety edges, emergency stop, alarm bell and intercom
system; condition of car body fixing, car interior and floor covering; car lighting, car
ventilation and levelling accuracy
|
Check operation |
|
q)
landing buttons, indicators, and fireman's lift switch
|
Check operation |
|
r)
door-lock operation including electrical and mechanical interlocks for car door and landing
door
|
Check operation |
|
s)
suspension ropes, compensation ropes/ chains, their anchorages and rope retainer (rope
guard)
|
Check for wear, elongation and tension Check lubrication only where intended |
|
t)
slack rope switch, safety gear switch, broken tape or rope switch and overspeed governor
switch
|
Check operation |
|
u)
counterweight clearances for rope stretch; rope equaliser; filler weight fixings; and
safety gear for guide clearance and free movement
|
Check operation |
|
v)
buffer condition
|
Check oil level Check lubrication Check switch when fitted Check fixings |
|
w)
travelling cables and their anchorages
|
Check operation |
|
x)
safety notices and signs
|
Check condition |
| Note In addition to the items listed in the maintenance schedule/instructions provided by the lift manufacturer, the RC responsible for maintaining the lift shall also carry out the following maintenance items for not less than twice a year if the concerned lift does not equipped with unintended car movement protection device, ascending car overspeed protection device or double braking system. The following maintenance items shall be completed in one single maintenance visit. |
|
|
a)
Disassembly maintenance of the braking mechanism for the lift machine brake.
|
The RC shall ensure that the relevant components of the brake (e.g. brake lining, solenoid plunger, brake spring, etc.) are in good and safe working order and ensure that all levers and moving parts of the brake must be kept clean with smooth operation and properly lubricated, and the relevant parts of the brake replaced in accordance with the manufacturer's instructions. |
|
b)
Measure the braking distance
|
Measure the braking distance by performing no-load brake test to ensure compliance with the lift manufacturer's requirements. |
|
c)
Measure grooves of traction sheave in the lift traction machine and replace the traction
sheave in accordance with the manufacturer's requirements.
|
Perform no-load traction test for the lift and measure the leveling accuracy to ensure the traction and leveling accuracy are in compliance with the lift manufacturer's requirements. |
|
d)
Check the mechanical locks and electrical contacts of all lift landing doors to ensure they
are in safe working order.
|
Check operation |
5. Useful Forms/ Check List – Samples
5.2 Check List for Periodic Maintenance for a Hydraulic Lift
In addition to the check list for the electric lift, at least the following applicable items which are pertinent to a hydraulic lift should be checked and attended to –
| Maintenance Items | Examples of checks |
|---|---|
| a) ram and cylinder condition | Check for oil leakage |
| b) levelling switches | Check operation |
| c) pipework, joints, bolts and fixings; stop valve; oil reservoir; pump and motor | Check Condition |
| d) control valves, pilot and levelling valves; overrun and cut-off devices; overload relief valve | Check Condition |
| e) air release cock and anti-syphon valvey | Check condition |
| f) Oil tank | Check hydraulic fluid level, adjusted to within the margin set by the manufacturer, written record should be kept as to the quantity of hydraulic fluid added to the system. Check tank and valve unit for leakage |
| g) Gland packings and seals – where gland packing or seals are used for valves and cylinders | Examine and maintain in accordance with manufacturer’s recommendations to prevent excessive loss of hydraulic oil. |
| h) Relief valve | Check to ensure that the seal is intact. |
5. Useful Forms/ Check List – Samples
5.3 Check List for Periodic Maintenance of an Escalator
For keeping the escalator and its associated equipment or machinery in safe working order, at least the following applicable items are to be checked for proper condition, and attended to if necessary, in accordance with a schedule recommended by an escalator manufacturer :
| Maintenance Items | Examples of checks |
|---|---|
| a) clearances between consecutive steps/ pallets and between the steps/pallets and the skirt panels | Check clearances and operation |
| b) drums, pulleys and moving parts | Check operation |
| c) machine room cleanliness | Check condition |
| d) any irregularities in running the escalator/ passenger conveyor | Check operation |
| e) safety devices, such as skirt panel switches, handrail inlet switches, emergency stop switches, broken drive/step chain devices, overspeed governor, speed monitoring device that for detection of overspeed or unintentional reversal of the direction of travel, step sagging devices, missing step devices, comb plate switches, etc. | Check condition |
| f) main drive system including drive chain and sprocket | Check condition Check for tension and wear Check bearing for wear Check lubrication |
| g) step/pallet rollers and step/pallet chain | Check for tension and wear Check lubrication |
| h) handrail | Check for free running and condition Check tension Check synchronisation between step/pallet band and the handrail |
| i) operational brake and auxiliary brake (if equipped) including their braking efficiencies | Check braking system Check parts for wear |
| j) comb | Check condition Check meshing with step s. pallets or belt |
| k) lubricating pump and oil | Check operation |
| l) motor gear box | Check gear and associated parts Check lubrication |
| m) lighting system | Check operation |
| n) floor intersection guards and any safeguards against adjacent building obstacles from causing injury to users | Check condition |
| o) safety notices and signs | Check condition |
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