Major alterations

The elevator or escalator major alterations are the legal terms for some modifications in the existing elevators and escalators. To ensure the public safety, the elevator or escalator engineers need to arrange a examination after the major alterations.

Sometimes, elevator modernization also applied for major alterations for just replacing some critical parts of the existing elevators.^[1]

For the escalator modernization, this applied for major alterations for just leave the truss in the current escalator site when replacing some critical parts^[2]^[3], even replace the controller and the motor^[4].

Common definitions of the elevator major alterations by countries

Notes and references

External links

hkill.hk - Hong Kong Ordinances (<Lifts and Escalators (Safety) Ordinance (Chapter 327)> Section 4: Lift major alterations)
hkill.hk - Hong Kong Ordinances (<Lifts and Escalators Ordinance (Chapter 618)> Sched 1 Major Alterations) (Escalator major alterations definition added)

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Escalator and Moving Walkway
Concept: Escalator control system • Escalator machinery • Spiral escalator • Escalator maintenance • Escalator modernization • Major alterations Escalator equipments: Escalator truss and balustrade • Escalator steps and step chains • Escalator handrails • Escalator skirt brushes • Emergency stop button • Energy-saving mode See also: List of elevator and escalator companies • Escalator landing plate guide • Floor numbering (Unlucky floor numbers) • Escalator incidents and accidents

[1] Electrical and Mechanical Services Department, Hong Kong - Circular No. 19/2011 Guidelines for Modernising Existing Lifts

[2] "大家近期去灣仔電腦城時有否發覺大堂的自動梯變得時尚美觀之餘，乘搭舒適度大為提升? 這是因為該商場採用了通力EcoMod™自動梯優化改造方案進行全面升級。", Facebook page: KONE Hong Kong.

[3] 西環香港商業中心商場在剛過去的一年進行翻新，翻新前原設有一對由地下上一樓的富士達自動梯。最近，標榜Hello Kitty主題的一田百貨進駐，而該對自動梯亦以新面貌示人。外觀上看，該自動梯與新款富士達自動梯無異；而我們從業界中得知，這是類似三菱及通力的「保留主桁架」方案。可以見到，在下層出口的踏台板非常短小，而梯級水平部份只有一級，正正是「保留主桁架」方案的特色。此方案以「主要更改」提交機電署，而非「拆卸及安裝」，故可免卻對物業土建工程上的改動，同時提供與新梯無異的性能及外觀。 (Facebook page: hkelev.com)

[4] Electrical and Mechanical Services Department, Hong Kong - Circular No. 12/2016 Modernization of Existing Escalators

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