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Auto Pump® 12 Volt
Instruction Manual
Air Compensator System
Note: The 091.9 Auto Pump consists of a 12 volt motor
driven compressor
Input: 12 volts, 12 amp
Output: 100 psi maximum
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Introduction
The Auto-Pump Air Compressor system is a
compact electric motor operated 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 pressure
switch is adjusted to start the compressor when the system pressure drops
below 75 psi and stops the compressor when 95 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.
| CAUTION no condensate in
the output or water must be allowed to enter or accumulate in the output
of the Auto Pump. Route output pressure line downward from Auto Pump to
permit moisture to drain away. Water in the pump outlet will induce
failure. Water damage will void warranty. |
Vehicle Tubing Installation
- Mount all components in a suitable location, preferably in a high area above the air system .
Do not mount in engine compartment or near any source of heat or dirt . The system may be
connected to any point in the vehicle's air system .
- Mount air compressor in a vertical position as shown.
- CAUTION no condensate or water must be allowed to enter or accumulate in the output of the
Auto Pump . Route output pressure line downward from Auto Pump to permit moisture to drain
away . Water in the pump outlet will induce failure .
- All connection for air lines are 1/4" NPT . Use Teflon tape, or equivalent on all connections to
insure no leakage of air.
- The recommended installation of the Auto Pump air compressor system is shown below.
- Mount the air compressor. Connect a suitable piece of flexible tubing from the outlet port of
compressor to the air tank . (Tubing and connectors are not supplied .)
- An optional water separator (Auto Clean 091-9G) is available to trap
moisture in the airline and stop the flow of moisture back into
compressor.
- An optional Mounting Plate 091-9H is available to reduce any vibration and noise from Auto
Pump and to simplify pump mounting.
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Vehicle Wiring Installation
- Remove cover of the Pressure Switch on the Auto Pump.
- Wire the pressure switch to the battery and a good chassis ground,
use #14 AWG wire minimum.
- Reinstall cover of Pressure Switch.
- The compressor is calibrated to cut in at 75 psi and cut out at 95
psi. For higher cut in and cut out, turn the range nut clockwise. To
lower cut in turn range nut counterclockwise. Do not exceed 100 psi.
- 091-9 Auto Pump can be wired to a positive or negative system
vehicle.
- Optional switch and fuse can be installed as shown (use 20 amp rated
switch and 15 amp SLO-BLO fuse).
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COMPRESSOR OUTPUT IS 100 PSI MAXIMUM. DO
NOT EXCEED 100 PSI OR YOU WILL VOID
WARRANTY.
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| Template for Auto Pump
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Specification & Outline
Input : 12 volts D.C. 12 amps
Weight: 6 lbs
Motor Horsepower: 10 HP
Motor Type: Permanent Magnet
Compressor Output: .30 SCFM @ 80 psi; .35 SCFM @ 60 psi
Pressure Switch: Adjustable Set Point-Factory set to 75 PSI Cut-in
Switch Differential: 18 PSI Nominal
Outlet Connection: 1/4 NPT, Female |
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Outline
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