GPI M-150S-EM User manual

Rev. A 921589-08
5252 East 36th Street North
Wichita, KS USA 67220-3205
TEL: [phone]
FAX: [phone]

05/09
M-150S-EM & M-150S-EA
Economy Fuel Pump
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.
SAVE THIS OWNER’S MANUAL
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 deter-
mined 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.
SAFETY INSTRUCTIONS
INSTALLATION
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
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 metal-
to-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 cor-
rectly 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 protec-
tive 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 sol-
vent manufacturer’s recommendations for safe use and disposal.
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.

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.
ALWAYS FOLLOW SAFETY PRECAUTIONS WHEN OPER-
ATING THIS EQUIPMENT. REVIEW THE SAFETY INSTRUC-
TIONS. 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.
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.
OPERATION
MAINTENANCE
If pump is to be installed in a Hazardous (Classified) location, it
must be installed by a licensed electrician and conform to Na-
tional Fire Protection Association (NFPA) codes 30 and 70. You
as the owner, are responsible for seeing that the installa-
tion 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.
Failure to follow these wiring instructions may result in death or
serious injury from shock, fire or explosion.
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.
This pump is designed for minimum maintenance. Motor bear-
ings 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.
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 pos-
sible 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.
Failure to follow these instructions could result in death,
serious injury or loss of equipment due to short circuit, fire
or explosion.
WARNING
DANGER

ALWAYS DISCONNECT POWER BEFORE REPAIRING OR
SERVICING THE PUMP. NEVER APPLY POWER TO THE
SYSTEM WHEN ANY COVERPLATE IS REMOVED.
A. SWITCH FAILS TO OPERATE MOTOR
1. Motor protector activated. Turn off switch. Allow motor
to cool, then turn on switch.
2. Fuse blown. Inspect fuse in fuse holder on power cord.
If blown, replace.
3. Switch or electrical connections faulty. Inspect for
damaged motor protector, defective wiring or switch, or
improper electrical connections. Replace as necessary.
4. Motor burned out. Inspect and replace as necessary.
B. MOTOR RUNS BUT DOES NOT PUMP FLUID
1. Suction pipe clogged, damaged, or missing. Remove
pump from tank. Inspect suction pipe. Clean or replace,
as necessary.
2. Gear coverplate or O-ring damaged. Remove and
inspect the coverplate and O-ring. Replace as necessary.
3. Strainer clogged or defective. Inspect and clean as
required.
4. Bypass poppet O-ring worn, missing or dirty. Inspect
the O-ring. Replace as necessary.
5. System air leak. Tighten all pump fittings and connec-
tions. Inspect suction pipe for leaks or damage.
6. Poor connections or low voltage. Make sure electrical
connections are secure. Also check battery voltage.
7. Fuel level low. Fill tank.
8. Motor running backwards due to incorrect polarity.
Connect red wire to positive (+) ungrounded side of
battery.
C. LOW FLOWRATE
1. Poor connections or low voltage. Make sure electrical
connections are secure. Also check battery voltage.
2. Strainer partially clogged. Inspect and clean as re-
quired.
3. Suction pipe too close to tank bottom or clogged.
Suction pipe must have at least 1/2 in.(1.2 cm) clearance
from bottom of tank.
D. MOTOR STALLS WHEN OPERATING IN BYPASS MODE
1. Motor protector activated. Turn off switch. Allow motor
to cool, then turn on switch.
2. Gears locked. Remove gear coverplate and inspect
gears and drive key. Make sure gears turn freely with the
key removed. Replace, if worn.
3. Bypass poppet binding or damaged. Remove the by-
pass poppet, spring, and O-ring. Clean cavity. Inspect
components and replace as necessary.
4. Motor defective. Inspect and replace as necessary.
E. RAPID OVERHEATING OF MOTOR
1. Duty cycle too long. Pump operation should not exceed
the standard duty cycle of 30 minutes on and 30 minutes
off. Allow the pump to cool for 30 minutes.
2. Strainer clogged. Remove strainer coverplate. Remove
and clean strainer.
3. Suction pipe clogged or damaged. Remove pump from
tank. Inspect suction pipe. Clean or replace as neces-
sary.
4. Gears worn. Remove gear coverplate and inspect gears
and drive key. Make sure gears turn freely with key
removed. Replace as necessary.
5. Running too long in bypass mode. Limit bypass opera-
tion to 10 minutes.
TROUBLESHOOTING SPECIFICATIONS
Applications:
The M-150S-EM/EA Fuel Pump is designed to safely transfer
low viscosity petroleum fuels such as gasoline (up to 15%
alcohol blends such as E15), diesel fuel (up to 20% biodiesel
blends such as B20) and kerosene. The pump is designed for
permanent mounting on vented storage tanks.
Pump Housing:
Lightweight, corrosion-resistant, cast aluminum body.
Performance:
Pump Rate: Up to 15 GPM (57 LPM)
Duty Cycle: 30 min. ON, 30 min. OFF
Suction Lift: Manual Nozzle: Up to 5.5 ft. (1.7 m)
Automatic Nozzle: Up to 4.8 ft. (1.5 m)
Operating Temperature:
-20°F to +125°F (-29°C to +52°C)
Operating Pressure:
15 PSI
Electrical Specifications:
Input: 12-volt DC
Cord: 18 ft. of 12/2 AWG (5.5 m)
Current Draw: 18 amp
Motor Protection: 20 amp circuit breaker
Fuse: 25 amp
Motor: 1900 RPM, UL Listed, CSA Certified. 1/5 HP (150 watts)
Mechanical Connections:
Bung: 2 in. NPT Inlet: 1 in. NPT Outlet: 3/4 in. NPT
Accessories:
3/4 in. x 10 ft. (3.0 m) Buna-N electrically conductive dis-
charge hose.
3/4 in. manual unleaded nozzle
3/4 in. automatic unleaded nozzle
Shipping Weight:
23 lbs. (10.5 kg) with manual nozzle
24 lbs. (10.8 kg) with automatic nozzle
In order to preserve the UL Listing for the motor, do not attempt
to service the motor. For products serviced outside the factory, the
UL nameplate must be defaced to indicate that the equipment
may no longer meet the requirements for UL Listing. This does not
apply to products serviced outside the factory under the UL
program for Rebuilt Motors for Use in Hazardous Locations.
For warranty consideration, parts, or other service information,
please contact your local distributor or the GPI Customer Service
Department in Wichita, Kansas, during normal business hours at:
1-800-835-0113
To obtain prompt, efficient service, always be prepared with the
model number of your pump, the serial number or manufacturing
date code of your pump, and part descriptions and numbers.
For warranty work, always be prepared with your original sales slip
or other evidence of purchase date.
Please contact GPI before returning any parts. GPI can inform you
of special requirements you will need to follow.
CAUTION: Do not return the pump or parts without authority from
the Customer Service Department. Due to strict government
regulations, GPI cannot accept parts unless they have been
drained and cleaned.
PARTS AND SERVICE

GPI and the electric gear pump are registered trademarks of Great Plains Industries, Inc.
© 2009 GREAT PLAINS INDUSTRIES, INC., Wichita, KS
Rev. A 921589-08Printed in U.S. A. 05/09
5252 East 36th Street North
Wichita, KS USA 67220-3205
TEL: [phone]
FAX: [phone]

LISTED MOTOR
Limited Warranty Policy
ILLUSTRATED PARTS LIST
33 9
10
29
15
21
26
16
18
13
4
28
19
17 12
5
7
3
11
22
34
1
31
32
27
24
30
20
14
25
8
23
6
44
2
Item No.
No. Part No. Description Req’d.
1 110121-8 Nozzle, Automatic 3/4 in.,
Unleaded (UL)...............................1
2 110155-1 Nozzle, Manual 3/4 in., Unleaded......1
3 110182-1 Inlet Fitting .........................................1
4 110187-2 Hose, 3/4 in. x 3/4 in. x 10 ft. ............1
5 110195-02 Coverplate, Electrical ........................1
6 110264-1 Suction Pipe, Top .............................1
7 110264-2 Suction Pipe, Bottom ........................1
8 110265-02 Power Cord........................................1
9 110276-01 Switch Coverplate Assembly.............1
10 110026-6 Switch Coverplate O-ring ..................1
11 110285-01 Electrical Coverplate Gasket .............1
12 110006-2 Gear ...................................................2
13 110009-1 Inlet Strainer ......................................1
14 110010-1 Bypass Poppet ..................................1
15 110017-6 Motor Shaft Key.................................1
16 110024-1 Coverplate, Strainer...........................1
17 110026-1 Gear Coverplate O-ring .....................1
18 110026-4 Strainer Coverplate O-ring.................1
19 110067-2 Gear Coverplate ................................1
20 110131-2 Spring, Bypass Poppet .....................1
21 110277-05 Switch Assembly, M-150S.................1
22 902006-31 Motor Protector ................................1
23 118017-3 O-Ring ...............................................1
24 119000-1 Motor, 12-volt (M-150).......................1
25 904001-42 Plug, Pipe, 3/4-14NPT.......................1
26 904002-22 Sems Screw.......................................4
27 904002-23 Sems Screw, 1/4-20 x 3/4 in. ............3
28 904002-24 Sems Screw.......................................4
29 904003-84 Tapping Screw ...................................1
30 11002502 Motor Shaft Seal................................1
31 110360-02 Nozzle Cover .....................................1
32 904002-17 Strain Relief Sealing Grip...................1
33 904002-23 Sems Screw & Washer Assembly......6
34 904006-86 Tapping Screw ...................................2
110500-02 25 amp Fuse Kit
110504-1 Fuel Pump Overhaul Kit - Includes 2 Gears, Drive Key & O-rings
110906-1 Wet Seal Kit - Includes O-rings & Motor Shaft Seal
110907-1 Gear Kit - Includes 2 Gears & Drive Key
110913-2 Spare Key Kit - Includes Spare Drive Key
110910-02 Switch Kit - Includes Switch
110908-1 Poppet Seal Kit - Includes Poppet O-ring
110524-1 Armature Assembly Kit - Includes Armature Assembly
110525-1 Brush Card Assembly Kit - Includes Brush Holder Assembly
110526-1 Motor Housing Kit - Includes Motor Housing Assembly
110527-1 Battery Clamp Kit - Includes 2 Battery Clamps
115527-2 Suction Pipe Extension, 15 inch
906001-4 Pre-vent Vapor Control Cap (3 psi)
Items Not Shown
Great Plains Industries, Inc. 5252 E. 36
th
Street North, Wichita, KS USA 67220-3205, hereby
provides a limited warranty against defects in material and workmanship on all products
manufactured by Great Plains Industries, Inc. This product includes a 2 year warranty from
date of purchase as evidenced by the original sales receipt. A 30 month warranty from prod-
uct date of manufacture will apply in cases where the original sales receipt is not available.
Reference product labeling for the warranty expiration date based on 30 months from date of
manufacture. Manufacturer’s sole obligation under the foregoing warranties will be limited to
either, at Manufacturer’s option, replacing or repairing defective Goods (subject to limitations
hereinafter provided) or refunding the purchase price for such Goods theretofore paid by the
Buyer, and Buyer’s exclusive remedy for breach of any such warranties will be enforcement of
such obligations of Manufacturer. The warranty shall extend to the purchaser of this product
and to any person to whom such product is transferred during the warranty period.
This warranty shall not apply if:
A. the product has been altered or modified outside the warrantor’s duly appointed
representative;
B. the product has been subjected to neglect, misuse, abuse or damage or has been
installed or operated other than in accordance with the manufacturer’s operating
instructions.
To make a claim against this warranty, contact the GPI Customer Service Department at
316-686-7361 or 800-835-0113. Or by mail at:
Great Plains Industries, Inc.
5252 E. 36
th
St. North
Wichita, KS, USA 67220-3205
GPI will step you through a product troubleshooting process to determine appropriate cor-
rective actions.
GREAT PLAINS INDUSTRIES, INC., EXCLUDES LIABILITY UNDER THIS WARRANTY FOR
DIRECT, INDIRECT, INCIDENTAL AND CONSEQUENTIAL DAMAGES INCURRED IN THE USE
OR LOSS OF USE OF THE PRODUCT WARRANTED HEREUNDER.
The company herewith expressly disclaims any warranty of merchantability or fitness for any
particular purpose other than for which it was designed.
This warranty gives you specific rights and you may also have other rights which vary from
U.S. state to U.S. state.
Note: In compliance with MAGNUSON MOSS CONSUMER WARRANTY ACT – Part 702 (governs
the resale availability of the warranty terms).