In a high-end community in Shanghai, an underground garage elevator has become a "problem source" for homeowners. Nearly one-third of the property management fees are spent on its maintenance. Since being put into use in 2015, this elevator has been "out of service" almost every year: it will shut down due to short circuits caused by water ingress on rainy days, shut down due to high temperatures in summer, and cannot operate due to freezing in winter. There have even been accidents where owners have been trapped. According to a report in 2023, this situation is not uncommon - the failure rate of underground garage elevators is 2.3 times higher than that of above ground elevators.

Design defects and safety hazards

The root of the problem lies in the unreasonable design. This elevator only has an IPX3 waterproof rating and is prone to water ingress in heavy rain; The natural ventilation system is unable to cope with garage environments above 40 ℃, resulting in frequent shutdowns; The emergency function is also unreliable - an elderly person was trapped for up to 40 minutes. Experts point out that underground environments can cause elevators to age five times faster than on the ground.

Transformation brings about a turning point

At the strong request of the property owners, the property management company finally launched the renovation project. The upgrade measures include: upgrading to IPX5 waterproof and equipped with an independent drainage system, installing industrial grade air conditioning and shaft insulation materials, and upgrading the emergency call system to five party communication, directly connecting the property and fire departments. Significant effect: The monthly average number of elevator failures has decreased from 8.7 to 0.3, maintenance costs have significantly decreased, owner satisfaction has increased to 92%, and housing prices have also risen accordingly.

Five Major Experiences of Underground Elevators

·The waterproof level must reach IPX4 or above;

·Cooling or heating systems must be configured to extend their lifespan;

·The carrying capacity should meet the actual needs (≥ 1000kg);

·The maintenance contract needs to specify the fast response time;

·Utilize IoT monitoring to achieve preventive maintenance.

Not just elevators

For homeowners like Ms. Chen, a renovated elevator is no longer just a tool for getting up and down. It withstands harsh environments, connects above ground and underground spaces, and ensures daily safety - it can be called the "silent steel warrior" in modern urban life.