INSTRUCTION MANUAL
®
AUTO-PUMP
12VDC
AIR COMPRESSOR SYSTEM
MODEL #091-9
BOOK# 091-9-3
NOTE :
The 091-9 Auto-Pump consists of
a 12volt motor driven compressor
INPUT :12 volt, 12 amp
OUTPUT :100 PSI MAXIMUM
1 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796
TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: 631-567-5826
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 OR
WATER MUST BE ALLOWED
TO ENTER OR ACCUMULATE
INTHE 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
1. 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 .
2. Mount air compressor in a vertical position as shown.
3. 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 .
4. All connection for air lines are 1/4" NPT . Use Teflon tape, or equivalent on all connections to
insure no leakage of air.
5. The recommended installation of the Auto Pump air compressor system is shown below.
6. 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 .)
7. An optional water separator (Auto Clean 091-9G) is available to trap moisture in the air line and
stop the flow of moisture back into compressor .
8. An optional Mounting Plate 091-9H is available to reduce any vibration and noise from Auto
Pump and to simplify pump mounting.
NOTE: Compressor must be mounted above air
tank to assure that moisture will flow away from
compressor.
VEHICLE WIRING INSTALLATION
1. Remove cover of the Pressure Switch on the Auto Pump.
2. Wire the pressure switch to the battery and a good chassis ground, use #14 AWG WIRE
MINIMUM .
3. Reinstall cover of Pressure Switch .
4. 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 .
5. 091-9 AUTO PUMP can be wired to a positive or negative system vehicle .
6. Optional switch and fuse can be installed as shown (use 20 amp rated switch and 15 amp SLOBLO fuse).
COMPRESSOR OUTPUT IS 100 PSI MAXIMUM. DO
NOT EXCEED 100 PSI OR YOU WILL VOID WARRANTY.
TEMPLATE AUTO PUMP
3/16" DIA. HOLE
3 PLACES
1 3/4"
5 3/16"
3 1/2"
SPECIFICATION & OUTLINE AUTO PUMP
Input : 12 volts D.C. @ 12 Amperes
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
OUTLINE AUTO PUMP
ACCESSORIES
MOUNTING PLATE
MODEL # 091-9H
FOR SIMPLIFIED MOUNTING
AUTO PUMP REBUILDING KIT 091-9E IS AVAILABLE .
AUTO CLEAN
A miniature air filter to
mount in the output pressure line of the Auto Pump
to trap moisture . The
micron filter element removes any contaminants
from the air line . A transparent bowl permits easy
monitoring of water collected and a manual
purge valve allows the
operator to conveniently
drain the bowl.
MODEL # 091-9G
WARRANTY
All Auto Pumps of Kussmaul Electronics Company Inc. are warranted
to be free of defects of material or workmanship. Liability is limited to
repairing or replacing at our factory, without charge, any material or defects
which become apparent in normal use within 1 year from the date the
equipment was shipped. Equipment is to be returned, shipping charges
prepaid and will be returned, after repair, shipping charges paid.
Kussmaul Electronics Company, Inc. shall have no liability for damages
of any kind to associated equipment arising from the installation and /or use
of the Kussmaul Electronics Company, Inc. products. The purchaser, by the
acceptance of the equipment, assumes all liability for any damages which
may result from its installation, use or misuse, by the purchaser, his or its
employees or others.
CAUTION: WATER IN THE PUMP OUTLET
WILL INDUCE F AILURE
WATER DAMAGE OR OPERATING AUTO
PUMP OVER 100 PSI WILL VOID WARRANTY
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