About the 9903-106
The 9903-106 Motor Operated Potentiometer (MOP) is a remote speed adjustment or speed limiter for Woodward 2301A, and Electrically Powered Governor (EPG) Series of Controls. This MOP can also be used as a power level adjustment for the Woodward Generator Load Control (GLC) Series. These series and their associated parts can also be found on our site for purchase or repair.
The 9903-106 assembly is a potentiometer driven through a coupling by an electric motor. Said motor includes a friction clutch in order to prevent damage to the potentiometer and thus the rest of the connected system. The 9903-106 is mounted on and encased by sheet steel. Install the potentiometer and motor on the electric control panel or have it wired remotely. Installation should be supervised or performed by a knowledgeable individual. While every purchase comes standard with our industry-leading warranty, user-error damage is not covered.
The manufacturer Woodward describes this unit as Low Cost, with a Simple Reliable Design, and Standard Resistance Values. The 9903-106 MOP features a Synchronous AC Electrically Reversible Motor with Voltage and Frequency ratings of 115 VAC, ±10%/60 Hz. Its Rotation Speed is 1 RPM at 15 mA of Nominal Current.