Honeywell Actuator B5-5S4 LKS160-36

The Honeywell Actuator B5-5S4 LKS160-36 is a servo motor designed for installation on Honeywell multistage or modulating liquid fuel burners. It operates on a 230 V supply, delivers a torque of 2.5 Nm, and has a 90° opening time of 5 seconds. The actuator features a reversible synchronous motor, stepless adjustment of cams, and a scale for position indication. It is protected to IP 44, has safety class II per VDE 0631, and is maintenance-free with a cylindrical transmission. The drive shaft is made of steel, and electrical connections are via terminal blocks. It complies with EN 60730-2-5:1991 and EU directives 73/23/EU and 93/68/EU.

When selecting an actuator of this type, ensure the supply voltage, torque, runtime, and rotation angle match the burner's requirements. The mounting position is any, and it is attached from the inside using through holes with M5 thread. The actuator has terminal blocks for electrical connection, and the cams are adjusted steplessly, with a scale for position indication. Verify the shaft type and dimensions to ensure compatibility with the burner linkage.

Common failures include motor burnout due to overloading or voltage spikes, leading to the actuator not moving or moving erratically. Gear wear can cause increased noise or loss of torque, resulting in incomplete valve opening or closing. Check the electrical connections for loose terminals and measure the supply voltage. Inspect the cams for wear or misalignment, and ensure the drive shaft is not seized.