ONRG-02 (MRL) Machine Roomless Elevator Overspeed Governor

ONRG-02 (MRL) is an overspeed governor model used in the elevator speed monitoring and safety arrangement. Assess mounting type, rope path and compatibility with the existing safety system using the technical documentation for the selected variant.

ONRG-02 (MRL) is the model for machine roomless elevator arrangements. Review its shaft location, rope route and service access together with the conditions of the existing installation.

Application and Product Selection

An elevator overspeed governor is a safety component that works with the governor rope and the associated safety gear. For a new installation or modernization project, consider the mounting space, rope route, service access and relationship with other system components. Different models and variants should be assessed using their own technical characteristics before assuming suitability for the same application.

Verify rated speed, direction of operation, tripping values, rope compatibility and connection arrangement against current technical documentation. A3, MRL or RT in a model name identifies the relevant variant; that label alone does not verify particular performance or certification conditions. Review the rope, tension pulley and safety gear together when evaluating the system.

A product should not be selected solely from a photograph or a similar model name. Exact dimensions, connection arrangements, operating conditions and system compatibility should be assessed against current technical documentation. Images show the general product form and do not replace a scaled manufacturing drawing. Check the application requirements together with the variant to be ordered.

Installation Planning and Maintenance

Before replacement, record the position of the existing component, its fixing points, interacting parts and maintenance access. Installation planning should cover dimensional comparison, suitable fasteners and the way components operate together. Installation and commissioning checks should be carried out by qualified personnel in accordance with the product instructions and the technical requirements of the project.

The maintenance plan should assess the pulley and rope relationship, mounting connections, moving parts and the product inspection requirements. Perform adjustments and tests according to current product instructions and the elevator technical inspection plan. After replacement, verify operation with the associated safety components through the checks and records relevant to the application.

Keep the product code, selected variant, quantity, installation position and technical documents in the project file for maintenance and future sourcing. Reference photographs and dimensional records of the replaced component can also be included. This provides a traceable basis for selecting components for subsequent modernization work on other elevators with the same arrangement.

Modernization Project and Quotation

When requesting a product assessment or quotation from Katrelift, share the model code, required quantity, a photograph of the existing component and the relevant fixing dimensions. Indicating whether the project concerns a new installation, maintenance or modernization helps identify the appropriate variant and the associated components that should be considered together.