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Auto Pump AC 120v 125psi
Cat. No. 091-9HP
Weight 12 lbs

Model # 091-9HP
  • Maintains Air Pressure in the Vehicle Brake System
  • Completely Automatic Operation Controlled by Integral Pressure Switch
  • No Interference with Operation of the Engine Mounted Air Compressor
  • Small Size, Mounts in any Dry Location
  • Simple Installation    
The Auto Pump Air Compressor system is a permanent split capacitor A.C. motor operating a single cylinder 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 Auto Pump motor is directly coupled to the compressor section eliminating all belts and pulleys assuring long life and reliable operation. A heavy duty, fixed set-point pressure switch starts the compressor when the pressure switch drops below 110 PSI and stops the compressor when 125 PSI is attained. A small pressure gage indicates the Auto Pump output pressure and helps with installation and trouble-shooting. The moisture trap provided permits routine draining of accumulated moisture in the Auto Pump output line.  

Input: 120 volts A.C. 60 Hz, 3.5 amps
Motor Horsepower
: 1/8 HP

Motor Type
: A.C., PSC

Compressor Output
: 1.4 CFM Open Flow, 125 PSI max.

Pressure Switch
: Set Point-Factory set to 110 PSI Cut-in, 125 PSI Cut-out

Outlet Connection
: 1/4 NPT, Female

: 1 Years

Instruction Manual, 120 Vac.pdf (223 Kb)
Instruction Manual, 240 Vac. pdf (221 Kb)
Product Specifications, 120 Vac.doc (179 Kb)
Product Specifications, 240 Vac.doc (179 Kb)
3D Drawing - IGS File (1.9 Mb)


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