Description

Elevator buffer speed limiter switch UKS UKT Brief Introduction

Product Name	Elevator buffer speed limiter switch
Model Number	UKS UKT
Quality	Original.Brand New
Payment	T/T. Paypal. Western Union
Delivery	3-5 Working Days
Packaging	Packed by carton

Elevator Buffer Speed Limiter Switch UKS & UKT: Critical Safety Protection for Elevator Operation

In the elevator safety protection system, the buffer speed limiter switch is a core component that monitors the operation status of the elevator speed limiter and buffer, triggering emergency protection measures when the elevator overspeeds or reaches the limit position. The Elevator Buffer Speed Limiter Switch UKS and UKT, exclusively supplied by Nanjing Zhuye Elevatorparts—a professional and trusted distributor of high-quality elevator safety components—are engineered in strict accordance with international elevator safety standards (EN 81-20, GB 7588). Featuring reliable trigger performance, strong mechanical durability, and excellent environmental adaptability, these two models are widely compatible with various mainstream elevator brands and speed limiter systems, providing solid safety guarantees for residential buildings, commercial complexes, office buildings, and public facilities worldwide.

Nanjing Zhuye Elevatorparts has established long-term cooperative relations with well-known elevator component manufacturers, adhering to the core principle of “safety first, quality paramount”. Each unit of UKS and UKT undergoes rigorous pre-delivery inspections, including trigger sensitivity testing, mechanical durability verification, and electrical performance assessment. Both models adopt high-quality flame-retardant insulating materials and high-wear mechanical contact components: the flame-retardant shell effectively isolates electrical hazards and adapts to the complex environment of elevator machine rooms; the high-wear contacts ensure stable electrical signal transmission and long service life, reducing the risk of contact failure. The differentiated design of UKS (normally used for speed limiter overspeed trigger) and UKT (normally used for buffer limit position trigger) forms a dual safety protection barrier, ensuring comprehensive monitoring of elevator critical safety nodes.

Proper Usage Methods of Elevator Buffer Speed Limiter Switch UKS & UKT

Correct installation, commissioning, and regular maintenance are crucial to maximizing the safety performance and service life of UKS and UKT buffer speed limiter switches. Follow these key guidelines for optimal operation:

1. Installation & Commissioning

Prior to installation, confirm the compatibility of UKS/UKT with the specific elevator speed limiter and buffer model by referring to Nanjing Zhuye Elevatorparts’ detailed compatibility manual. Professional technicians are required for the installation process, which includes the following steps:

First, cut off the elevator power supply and ensure safety. Thoroughly clean the installation positions (UKS on the speed limiter assembly, UKT on the buffer or elevator car limit bracket) to remove dust, oil stains, and debris, ensuring a stable mounting base for the switches.
Fix the switches firmly using matching bolts and nuts according to the elevator manufacturer’s standard installation positions. For UKS, ensure its trigger lever is correctly aligned with the speed limiter’s centrifugal mechanism, with a trigger gap of 1–2mm (standard range); for UKT, align its trigger component with the buffer’s stroke limit position. The tightening torque of the bolts should comply with technical requirements (typically 10–15 N·m) to avoid loosening due to elevator vibration.
Correctly connect the wiring: According to the wiring diagram provided by Nanjing Zhuye Elevatorparts and the elevator manufacturer, connect the signal wires of UKS and UKT to the corresponding terminals of the elevator main controller. Ensure the wiring is tight and reliable, and the wire insulation layer is intact to avoid short circuits or poor contact. Clearly distinguish the wiring of UKS and UKT to avoid confusion, and use shielded wires to reduce electromagnetic interference.
Post-installation commissioning: Restore the elevator power supply, operate the elevator in inspection mode, and simulate the trigger conditions of UKS and UKT respectively. For UKS, verify that it can accurately trigger the speed limiter’s emergency braking function when the elevator overspeed; for UKT, confirm that it can send a stop signal to the controller when the buffer reaches the limit stroke. Ensure the elevator stops immediately and enters the safety protection state after the switches are triggered.

2. Daily Operation & Routine Inspection

Regular daily inspections are essential to detect potential faults early and ensure the reliable performance of UKS and UKT switches. Maintenance personnel should perform the following checks:

During elevator operation, monitor the elevator’s safety system status through the control system’s fault code display. Fault codes related to UKS or UKT usually indicate issues such as switch stuck, poor contact, or trigger failure.
Conduct weekly visual inspections: After cutting off the power supply, check the appearance of UKS and UKT for damage, including cracks or deformation of the insulating shell, looseness of bolts and wiring terminals, and oxidation or wear of the trigger lever. Retighten loose fasteners in a timely manner, clean the trigger components with a dry, lint-free cloth, and replace damaged wiring if necessary.
Regularly check the trigger sensitivity and reset function of the switches. Manually actuate the trigger lever of UKS and UKT to ensure they trigger accurately and reset smoothly without jamming. If the switch is insensitive or cannot reset, resolve the issue promptly.

3. Regular Maintenance

In addition to daily inspections, systematic regular maintenance is required to extend the service life of UKS and UKT switches:

Every 3 months, thoroughly inspect the installation positions and trigger gaps of UKS and UKT. Adjust immediately if there is deviation due to elevator vibration or structural deformation; at the same time, check the wear status of the trigger lever and contacts.
Every 6 months, conduct a comprehensive cleaning of the switches and their surrounding areas. For switches installed in harsh environments (high humidity, high dust, high temperature), increase the cleaning frequency. Avoid using water, alcohol, or corrosive cleaners that may damage the insulating shell and internal components.
Annually, conduct a professional performance test: Use precision instruments to detect the trigger accuracy, contact resistance, and signal response time of UKS and UKT. If the performance indicators do not meet the standard requirements, contact Nanjing Zhuye Elevatorparts for professional maintenance or replacement with original switches to ensure the safety of the elevator protection system.

Recommended Replacement Cycle of Elevator Buffer Speed Limiter Switch UKS & UKT

As critical safety protection components, UKS and UKT buffer speed limiter switches have a specified service life. Timely replacement is crucial to avoid elevator safety system failures and potential safety risks. It is recommended to replace UKS and UKT simultaneously to ensure consistent safety performance.

1. Standard Replacement Cycle

Under normal operating conditions (8,000–12,000 elevator operations per month, normal machine room environment), the recommended replacement cycle for both UKS and UKT is 5–7 years. This cycle is determined based on the product’s mechanical durability test data, contact component lifespan, and long-term field operation feedback from Nanjing Zhuye Elevatorparts.

2. Scenario-Based Cycle Adjustment

Harsh Operating Environments: For elevators operating in high-humidity coastal regions, high-dust construction sites, high-temperature unventilated machine rooms, or areas with strong vibration, the replacement cycle should be shortened to 4–5 years. Harsh conditions accelerate the aging of insulating materials, corrosion of contacts, and mechanical wear, reducing the switches’ reliability.
Low-Frequency Use Scenarios: For elevators with low usage frequency (e.g., villa elevators, small office buildings with less than 3,000 monthly operations) and stable operating environments, the replacement cycle can be appropriately extended to 7–8 years after a professional inspection by Nanjing Zhuye Elevatorparts confirms that the switches’ trigger performance, contact stability, and structural integrity are intact.

3. Immediate Replacement Conditions

Regardless of the service life, UKS and UKT must be replaced immediately if any of the following problems are detected during inspection:

The insulating shell is severely cracked, deformed, or burned, losing its insulating and protective functions.
Contacts are severely oxidized, ablated, or stuck, resulting in poor contact, no signal output, or false signals.
The switch fails to trigger accurately or reset smoothly, leading to the elevator’s safety protection function failure (e.g., unable to brake during overspeed) that cannot be resolved by maintenance.
The switch fails the annual performance test, and the performance indicators cannot be restored to the standard range even after maintenance.

In conclusion, the Elevator Buffer Speed Limiter Switch UKS and UKT supplied by Nanjing Zhuye Elevatorparts are high-quality, reliable safety components for elevator systems. By following the correct usage methods, conducting regular maintenance, and adhering to the recommended replacement cycle, elevator maintenance teams can effectively enhance the operational safety and stability of elevators, protect passengers’ safety, and minimize failure risks. Choosing Nanjing Zhuye Elevatorparts and UKS/UKT switches means selecting authenticity, reliability, and professional technical support.

Products Categories