Product Overview

The Siemens SQN9 series burner servomotors are reversible electric actuators used for controlling air dampers and fuel control mechanisms in oil and gas burners. These actuators regulate the combustion air supply, enabling precise control of the air-fuel ratio in industrial burner systems.

The SQN9 servomotor series is designed mainly for small to medium-capacity burners, where accurate positioning of the air damper is required to maintain stable combustion and burner efficiency.

These actuators include an adjustable cam system with auxiliary switches, allowing users to define specific positions such as ignition load, minimum load, and maximum load. The actuator can also be manually disengaged during commissioning or maintenance to allow manual adjustment of the mechanical linkage.

The SQN9 servomotors are widely used with Siemens burner control systems such as LMO, LME, LGB, and LFL controllers, making them a common actuator solution in industrial burner applications.

With robust construction and reliable synchronous motor technology, the SQN9 series ensures smooth damper movement and long service life in industrial combustion environments.

Key Features

Designed for industrial oil and gas burner systems

Reversible electromotoric actuator for air damper control

Adjustable cam switches for burner load positions

Manual gear disengagement for easy commissioning

Compact design for burner installation

Reliable synchronous motor with gear drive

Compatible with Siemens burner controllers

Suitable for single-stage, two-stage, and modulating control

Applications

• Industrial gas burners

• Industrial oil burners

• Dual-fuel burner systems

• Steam boilers

• Thermal oil heaters

• Industrial furnaces and ovens

• Process heating equipment

Why Choose Siemens SQN9 burner servomotor?

Reliable Siemens combustion control technology

Precise damper positioning for efficient combustion

Compatible with multiple Siemens burner controllers

Durable design for industrial environments

Easy installation and maintenance

Stable burner performance with improved safety

Technical Description

The Siemens SQN9 burner servomotor is a reversible synchronous motor actuator used to drive air dampers in industrial burner systems. The actuator adjusts the air supply to the burner depending on the burner load requirement, helping maintain an optimal combustion process.

The actuator contains a gear train and cam switch mechanism that allows precise positioning of the air damper. Adjustable cams can be used to trigger auxiliary switches for burner functions such as ignition load or stage switching.

The SQN9 series supports different control methods including single-wire, two-wire, and three-position control, allowing integration with a wide range of burner controllers and combustion control systems.

These actuators are typically mounted directly on the burner housing and connected to the air damper linkage. Their compact design and reliable motor mechanism ensure consistent positioning and long operational life.

Technical Specifications