Kussmaul Electronics 091-9-12V-HP-VER User Manual
Page 2
INTRODUCTION
The Auto-Pump Air Compressor system is a compact electric motor operated single cylin-
der air compressor designed specifically for installation on vehicles with air brakes. During
long idle periods of the vehicle when even the slightest seepage can cause an air brake
system pressure to drop below the brake lockup pressure, the Auto Pump automatically
starts to maintain the pressure. The unit also has an automatic water separator that
drains the water from the separator bowl whenever the pump is cycled.
The Auto Pump motor is directly coupled to the compressor section eliminating all belts
and pulleys assuring long life and reliable operation. A heavy duty pressure switch is
adjusted to start the compressor when the system pressure drops below 105 psi and
stops the compressor when 125 psi is attained. The start up pressure is field adjustable
- the pressure differential between start up and stopping is fixed. Please read and follow
the installation instructions carefully. The Auto Pump requires no routine maintenance. A
careful installation will assure years of trouble free operation.