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5252 East 36th Street North
Wichita, KS USA 67220-3205
TEL: 316-686-7361
FAX: 316-686-6746
SAVE THIS OWNER’S MANUAL
M-150S-EM & M-150S-EA
Economy Fuel Pump
S T O P
DO NOT RETURN THIS PRODUCT TO THE STORE!
Please contact GPI before returning any product. If you are
missing parts or experience problems with your installation,
our Customer Support Department will be happy to assist you.
GPI Customer Support
800-835-0113 or 316-686-7361
GENERAL INFORMATION
These instructions will help you operate and maintain your
pump. This owner’s manual covers the 12-volt Economy Model
electric gear pumps with automatic and manual nozzles.
An automatic bypass valve prevents pressure build up when
the pump is on with the nozzle closed. To avoid damage, do
not run the pump more than 10 minutes with the nozzle
closed.
The duty cycle of this pump is 30 minutes ON and 30 minutes
OFF. Allow the pump to cool for 30 minutes.
This pump is designed for use only with gasoline (up to 15%
alcohol blends such as E15), diesel fuel (up to 20% biodiesel
blends such as B20) and kerosene. Do not use this pump for dis-
pensing any fluids other than those for which it was designed. To
do so may damage pump components and will void the warranty.
This pump is designed to operate on a typical 12-volt DC
automotive electrical system. The pump is designed to operate
with 12-volts DC at the motor leads and the ratings are determined at this voltage. Performance may vary due to length of
power cord, battery condition or output from vehicle charging
system that will affect system voltage.
05/09
Do not leave the system running without fluids. “Dry running”
can damage the pump.
Do not pump the tank completely dry, as contaminants from the
bottom of the tank may enter the pump.
SAFETY INSTRUCTIONS
Observe all safety precautions concerning safe handling of
petroleum fuels.
To ensure safe operation, all fuel transfer systems must be
properly grounded. Proper grounding means a continuous metalto-metal contact from one component to the next, including
tank, bung, pump, meter, filter, hose, and nozzle. Care should be
taken to ensure proper grounding during initial installation and
after any service or repair procedures. For your safety, please
take a moment to review the warnings below.
To prevent physical injury, observe precautions against fire or
explosion when dispensing fuel. Do not operate the system in
the presence of any source of ignition including running or hot
engines, lighted cigarettes, or gas or electric heaters.
Observe precautions against electrical shock when operating
the system. Serious or fatal shock can result from operating
electrical equipment in damp or wet locations.
Inspect external pump wiring regularly to make sure it is correctly attached to the battery. To avoid electrical shock, use
extra care when connecting the pump to power.
Avoid prolonged skin contact with petroleum fuels. Use protective goggles, gloves and aprons in case of splashing or spills.
Change saturated clothing and wash skin promptly with soap
and water.
Observe precautions against electrical shock when servicing
the pump. Always disconnect power before repairing or servic-
ing. Never apply electrical power to the system when any of the
coverplates are removed.
If using solvent to clean pump components or tank, observe the solvent manufacturer’s recommendations for safe use and disposal.
INSTALLATION
This pump is designed to self-prime with dry gears. Expect
suction lift as follows:
Manual Nozzle: 5.5 ft. (1.7 m) with diesel
6.7 ft. (2.1 m) with gasoline
Automatic Nozzle: 4.8 ft. (1.5 m) with diesel
5.8 ft. (1.8 m) with gasoline
If you require a greater initial prime height, coat the gears with
fluid by removing the plug on the top of the pump and pour a
small quantity of motor oil into the gear cavity. Replace the plug
and try again. A foot valve with pressure relief may be needed to
maintain prime.
Make sure all threaded fuel connections are wrapped with three
to four turns of thread tape or a pipe thread sealant approved for
use with petroleum fuels.
Rev. A 921589-08
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Clean and bond the suction pipe top and bottom as necessary.
Thread the suction pipe into the inlet fitting and tighten snugly.
Trim the suction pipe as necessary to leave approximately 1/2 in.
(1.2 cm) clearance from the bottom of the tank. Clean the tank
interior of all dirt and debris. Insert the suction pipe into the tank
opening. Tighten the pump into the tank opening until snug. Do
not cross thread.
Make sure the tank is vented. A vent cap rated at 3 psi or less is
recommended.
Install Electrical Connections
A grounding connection is provided. It is identified as a green
colored binding head screw in the electrical cavity. Connect
these pumps only to a 12-volt DC power source. Do not attempt
connection to a 24-volt DC, 115-volt AC or 230-volt AC power
source.
For installation in unclassified areas, the supplied power cord,
fuse and strain relief grip may be used.
NOTE: These components have not been evaluated as part of
the UL Listed Equipment and are not intended for use in a
Hazardous (Classified) Location.
To install the power cord, remove the electrical coverplate. If
necessary, trim the power cord to the desired length. Strip 3 to
4 inches (7.5 to 10 cm) of outer insulation from the power cord
end. Then strip 1/2 in. (1.3 cm) of insulation from the power cord
wires. Slide the strain relief grip onto the power cord so that the
threaded end of the strain relief grip faces the stripped power
cord wires. Insert the power cord through the 1/2 inch NPT
connection on the back of the pump. Using wire nuts, connect
black wire to black and red wire to red in the pump’s electrical
cavity. Position the wires inside the electrical cavity and tighten
the strain relief grip securely. Make sure surfaces are clean.
Install the coverplate and tighten securely.
WARNING
Carefully route the power cord to the battery, protecting the
power cord from hot surfaces, sharp edges or anything that
could damage the power cord, resulting in a short circuit.
A 25 amp fuse is provided to protect the power cord and motor.
Install fuse in the red wire of the power cord as close as possible to the battery. Connect the red wire of the fuse to the
positive (ungrounded) side of battery. Connect black wire to
the negative (grounded) side of battery.
F
ailure to follow these instructions could result in death,
serious injury or loss of equipment due to short circuit, fire
or explosion.
DANGER
If pump is to be installed in a Hazardous (Classified) location, it
must be installed by a licensed electrician and conform to National F
ire Protection Association (NFPA) codes 30 and 70. You
as the owner, are responsible for seeing that the installation
and operation of your pump complies with NFPA codes
as well as any applicable state and local codes. Rigid conduit
must be used to install wiring. Note that the lead wires are
factory-sealed isolating the motor from the junction box.
Fa
ilure to follow these wiring instructions may result in death or
serious injury from shock, fire or explosion.
Install Hose and Nozzle
After sealing threads, tighten the hose into the pump outlet and
the nozzle on the hose. The nozzle can be placed in the nozzle
holder only when the pump is off.
OPERATION
ALWAYS FOLLOW SAFETY PRECAUTIONS WHEN OPERATING THIS EQUIPMENT. REVIEW THE SAFETY INSTRUCTIONS. Before each use, repair leaks around seals or connec-
tions. Make sure hoses are in good condition and connections
are tight. Make sure the work area is dry. MAKE SURE THE
PUMP IS PROPERLY GROUNDED. Repair any corroded or
damaged wiring before use. Ensure the tank contains enough
fuel. Make sure the fuel is not contaminated with debris.
To Dispense Fuel
Turn on the pump by removing the nozzle from the holder and
pushing up the switch lever. Insert the nozzle into the receiving
tank and squeeze the handle to start fuel flow. When done,
release the nozzle handle, turn the pump off, and return the
nozzle to its holder.
This pump is designed to be self-priming. If fuel is not delivered
within 15 to 20 seconds, turn the pump off and refer to priming
information in the Troubleshooting Section.
An automatic bypass valve prevents pressure build up when the
pump is on with the nozzle closed. To avoid pump damage, do
not run the pump more than 10 minutes with the nozzle closed.
Motor Protector
The pump contains a motor protector that provides added
protection against motor damage. It must be reset manually.
If the motor protector trips, reset by turning the switch OFF. Let
the pump cool then turn ON again. If the motor protector trips
again, see the Troubleshooting Section of this manual.
MAINTENANCE
This pump is designed for minimum maintenance. Motor bearings are sealed and require no lubrication. Inspect the pump and
components regularly for fuel leaks and make sure the hose and
power cord are in good condition. Keep the pump exterior clean
to help identify leaks.
Do not use this pump for water, chemicals or herbicides.
Dispensing any fluid other than those listed in this manual will
damage the pump. Use of the pump with unauthorized fluids will
void the warranty.
To Clean or Replace Strainer
Turn the pump off and disconnect from power. Remove the
strainer coverplate. Remove the inlet strainer and inspect for
damage or clogs. Clean the strainer with a soft-bristled brush
and solvent. If the strainer is very dirty, compressed air may be
used. If damaged, replace the strainer.
Place the strainer in the cavity. Clean the coverplate and O-ring.
Coat the O-ring lightly with grease. Ensure the coverplate O-ring
is properly seated and tighten the strainer coverplate.