KUSSMAUL AUTO-PUMP 091-9B-4 User manual

170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: [phone]
[email protected]
2 YEAR WARRANTY
File: 091-9B-4_revA_GEN4
Rev: A
Revised By :THN
Date: 10-19-21
INPUT :120 volt, 50/60 Hz, 3.3 AMPS
OUTPUT: 100 PSI MAXIMUM
AUTO-PUMP
120 VAC
AIR COMPRESSOR SYSTEM
INSTRUCTION MANUAL
®
MODEL #:091-9B-4

170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: [phone]
[email protected]
2
INTRODUCTION
The 091-9B-4 Auto-Pump Air Compressor system is a 120 volt 50/60 Hz capacitor
start A.C. motor operating a single cylinder air compressor designed specically 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 help maintain
operating 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 eld
adjustable - the pressure di󰀨erential between start up and stopping is xed.
A moisture trap is mounted on the Auto Pump. This helps capture condensate which
results from compressing the air.
*Moisture trap should be checked periodically and drained as necessary.
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.
NOTE
THIS PUMP REQUIRES A MINIMUM OF 110 VOLTS. FOR
OPERATION AT LOWER VOLTAGES THE PUMP WILL NOT START

3
170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: [phone]
[email protected]
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!
WATER DAMAGE WILL
VOID WARRANTY

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 the position as shown being certain that the compressor is above air
pressure tank.
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 connections for air lines are 1/4" NPT. Use Teon 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. Note that an external check valve is located between the compressor and the pressure switch.
No additional check valve is required.
7. Mount the air compressor. Connect a suitable piece of exible tubing from the outlet port of
compressor to the air tank. (Tubing and connectors are not supplied)
8. An optional Mounting Plate is available to help reduce vibration and noise from Auto Pump and
to simplify pump mounting.
Auto Pump
091-9B-1
Air Pressure System
Air Line
The Flow of
Any Moisture
1/4" NPT
Outlet Port
Truck
Body
Optional
Mounting
Plate kit
091-9H-1
VEHICLE TUBING INSTALLATION
4

1. The Auto Pump is supplied with a 120 volt A.C. line cord and is ready to operate. The line cord
may be plugged into an available outlet or the cord may be cut and permanently wired to the
120 volt A.C. system in the vehicle.
2. 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 cut out.
COMPRESSOR OUTPUT IS 100 PSI MAXIMUM.
DO NOT EXCEED 100 PSI OR YOU WILL VOID
WARRANTY.
120 VOLT A.C.
POWER CORD
PRESSURE
SWITCH
PRESSURE SET
POINT ADJUSTMENT
TURN CLOCKWISE TO
INCREASE BOTH CUT-IN
AND CUT-OUT PRESSURE
FACTORY SET TO
CUT-IN @ 75 PSI
CUT-OUT@ 95 PSI AUTO PUMP
091-9B-1
BLK
WHITE
WHITE
BLK
GRN
GRN
NOTE:
THIS PUMP REQUIRES A MINIMUM
OF 110 VOLTS. FOR OPERATION AT
LOWER VOLTAGES THE PUMP WILL NOT
START, AND/OR MAY DAMAGE THE PUMP.
VEHICLE WIRING INSTALLATION
5

170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: [phone]
[email protected]
6
Input : 120 volts A.C., 50/60 Hz, 3.3 amps
Weight: 13 lbs
Motor Horsepower: 1/8 HP
Motor Type: Split capacitor A.C.
Compressor Output: 100 PSI Maximum.
Pressure Switch: Set to 75 PSI Cut-in, 95 PSI Cut-out (+/- 5 PSI )
Switch Di󰀨erential: 20 PSI Nominal
Outlet Connection: 1/4 NPT, Female
Operating Temperature: 0⁰C to 43⁰C
SPECIFICATION & OUTLINE AUTO PUMP

17/64” DIA.
HOLE 6 PLACES
Note: Verify measurements before using as a template.
Must set print settings to “Actual Size”.
4.75" 1.75"
3.50"
TEMPLATE AUTO PUMP
7
6.125
3.500
Ø0.187

170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: [phone]
[email protected]
8
ACCESSORIES
MOUNTING PLATE
CAUTION: WATER IN THE PUMP OUTLET
WILL INDUCE FAILURE
WATER DAMAGE OR OPERATING AUTO PUMP
OVER 100 PSI WILL VOID WARRANTY
091-9HP-H

170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: [phone]
[email protected]
Auto-Pump products 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 2 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.
WARRANTY POLICY
DATE INSTALLED _______________________________________________________
INSTALLED BY _________________________________________________________
VEHICLE IDENTIFICATION _______________________________________________
VEHICLE OWNER _______________________________________________________
INSTALLATION RECORD
CAUTION: WATER IN THE PUMP OUTLET
WILL INDUCE FAILURE
WATER DAMAGE OR OPERATING AUTO PUMP
OVER 100 PSI WILL VOID WARRANTY