Belimo GMB24-MFT Actuator Freon ensure the device is mounted

ensure the device is mounted with the diaphragm in a vertical plane

the internal diaphragm or seat disc likely requires replacement using this kit

It is specifically matched for through-the-wall units and packaged terminal air conditioners (PTAC) to govern compressor cycles

Engineered for professional-grade HVAC circuit board troubleshooting

it is recommended to install a new capacitor that matches the microfarad (MFD) rating listed on the B1340023SP nameplate

Belimo GMB24-MFT Actuator Freon ensure the device is mountedThe Belimo GMB24 MFT Actuator is a heavy duty non spring return rotary actuator engineered for precise control of large dampers and valve assemblies in high torque HVAC applications. Delivering 360 in lb of torque, this unit operates on 24VAC DC power and utilizes Multi Function Technology (MFT) for versatile field configuration. The GMB24 MFT supports 2 10VDC proportional control, 4 20mA (via 500 Ohm resistor), floating point, and On Off signals.