GPI FM-100 Series User manual

5252 East 36th Street North
Wichita, KS USA 67220-3205
TEL: [phone]
FAX: [phone]
“A Great Plains Ventures Subsidiary”
www.gpi.net
1-800-835-0113
Rev. B 920698-06
MECHANICAL
FUEL METER
FM-100 and FM-200 Series
Owner’s Manual
07/08

General Information............................. 1
Introduction ......................................... 1
Before Installation................................ 1
Installation ........................................... 2
Daily Operations.................................. 2
Maintenance........................................ 3
Calibration ........................................... 4
Repair .................................................. 5
Troubleshooting................................... 6
Specifications...................................... 7
Parts and Service ................................ 7
Illustrated Parts Lists........................... 8
TABLE OF CONTENTS
To the owner…
Congratulations on receiving your GPI
Mechanical Fuel Meter. We at GPI are
pleased to provide you with a fuel meter
designed to give you maximum reliability
and efficiency.
Our business is the design, manufac-
ture, and marketing of liquid handling,
agricultural, and recreational products.
We succeed in this business because
we provide customers with innovative,
reliable, safe, timely, and competitively-
priced products. We pride ourselves in
conducting our business with integrity
and professionalism.
We are proud to provide you with a quality
product and the support you need to ob-
tain years of safe, dependable service.
President
Great Plains Industries, Inc.
Great Plains Industries, Inc.
is a member of the Petroleum Equipment Institute.

GENERAL INFORMATION
The purpose of this manual is to assist
you in operating and maintaining your
GPI mechanical fuel meter. This manual
is designed and written with you in mind.
Please take a few moments to read
through this manual before installing and
operating your fuel meter.
If you need assistance, contact the dealer
from whom you purchased your meter.
If you feel you need further assistance,
please call the GPI Customer Service
Department at:
1-800-835-0113
If You Measure in Litres
The Model FM-100L and FM-200L meters
are factory calibrated in litres and the
FM-100 and FM-200 in gallons. Model
numbers are clearly labeled on the face
of the meter. All references to “gallons”
in this manual apply equally to “litres” for
the FM-100L and FM-200L models.
This symbol is used throughout
this manual to call your attention
to safety messages.
Warnings alert
you to the poten-
tial for personal
injury.
Cautionscallyour
attention to prac-
tices or proce-
dures which may
cause damage to
your equipment.
Notes give you information that can im-
prove efficiency of operations.
It is your responsibility to insure that all
equipment operators have access to
adequate instructions concerning safe
operation and maintenance.
1
Read Me!
Below is a list of major warnings and
cautions that are given in this manual.
Please take a moment to review them
now for your future safety.
1. Your meter is designed for use only
with thin viscosity petroleum fuels
such as diesel fuel, kerosene and
gasoline (up to 15% alcohol blends
such as E15, M15).
2. Do not use this equipment for dis-
pensing any fluids other than those
for which it was designed.
3. Any components added to your
meter such as hose, nozzle or pump
must be statically-grounded and
approved for use with petroleum
fuels.
4. Observe precautions against fire or
explosion when dispensing fuel.
5. Avoid prolonged skin contact with
petroleum fuels.
GPI mechanical fuel meters are designed
for the field measurement of thin viscosity
petroleum fuels only and are intended for
use with pump or gravity feed systems
in the 4 to 20 GPM or 15 to 75 LPM flow
range. Using mechanical gears, these
meters translate flow data from a nutating
disc into calibrated units that are indicated
on the face of the meter.
INTRODUCTION
BEFORE INSTALLATION
WARNING
CAUTION
Upon receipt of your meter, examine it
to make sure there are no visible signs
of damage. If damage is evident, please
contact your GPI distributor.
If the meter is located in a rigid piping
system where the fluid is trapped (for
example, by gravity, valves or nozzles)
thermal expansion of the fluid can create

2
INSTALLATION
pressure spikes that can damage a meter.
Install a thermal relief valve or otherwise
allow for thermal expansion of the fluid.
Figure 1
Your system must be mounted to a vented
tank. (Figure 1) If the tank is unvented,
your GPI distributor can supply a pres-
sure cap.
2. Remove the two counter cover
screws and the four screws holding
the counter assembly against the
housing.
3. Rotate the counter assembly to the
desired position. (Figure 2) Position
the O-ring and align the nutator disc
pin with the back of the assembly.
Secure the counter assembly to the
housing by alternately tightening
screws.
Figure 2
DAILY OPERATIONS
Any components such as hose,
nozzle, or pump added to your me-
ter must be statically grounded and
approved for use with petroleum
fuels.
WARNING
1. Remove protective plugs from meter
inlet and outlet ports.
2. Wrap threaded male connections
with thread tape or use a pipe
sealant compound compatible with
petroleum fuels.
3. Install the meter on the pump. The
meter’s outlet port is marked with a
flow arrow.
4. Install other system components on
the meter and tighten snugly.
To accommodate various filter positions,
the counter assembly of the FM-100 Se-
ries meter may be rotated as follows:
1. Pull to remove the reset knob on the
side of the meter.
4. Replace the counter cover and
screws.
5. Position the reset knob and push to
install.
Meter Accuracy
The meter has been accurately calibrated
at the factory for use with diesel fuel. Due
to differences in viscosities and flowrates,
calibration may need to be adjusted if
other fuels are to be dispensed. Refer
to the Repair Section for calibration
instructions.
1. Before use, visually check the meter
to ensure it is securely fitted to other
system components and there is no
leakage at connections. If leakage is
present, refer to the Troubleshooting
Section.

3
2. Follow safetyprecautions, wipingany
spilled fuel from the exterior of the
meterand othersystem components.
Dispense Fuel
1. The large meter display represents
the Batch Total for each fuel delivery.
Before dispensing fuel, reset the
Batch Total to zero by turning the
reset knob on the side of the meter
counterclockwise. (Figure 3)
This meter is designed for use only
with thin viscosity petroleum fuels
such as diesel fuel, kerosene and
gasoline (up to 15% alcohol blends
such as E15, M15). Do not use this
equipment for dispensing any fluids
other than those for which it was
designed. To do so may damage the
meter and will void the warranty.
Observe precautions against fire or
explosion when dispensing fuel. Do
not operate the meterinthepresence
of any source of ignition includ-
ing running or hot engines, lighted
cigarettes, or gas or electric heaters.
Avoid prolonged skin contact with
petroleum fuels. Use protective
goggles, gloves, and aprons in case
of accidental splashing or spillage.
Change saturated clothing and wash
skin contact areas promptly with
soap and water.
Figure 3
NOTE: The small display represents the
Cumulative Total of all pump deliveries
and cannot be reset.
2. To enhance meter accuracy, dis-
pense fuel using a quick-open and
quick-close method. Avoid choking
flow as the tank becomes full.
Your mechanical fuel meter is designed
for minimum maintenance. Examine the
meter and other system components
regularly for leakage. Keep the system
exterior clean to help identify leaks.
The FM-100 Series has an internal fuel
filter. The FM-200 Series is equipped
with an internal strainer. Both should be
checked annually or whenever low flow
is noticed. The meter may also require
recalibration if actual fuel delivery differs
noticeably from meter readings. Refer to
the Repair Section for filter and strainer
access and calibration information.
Replace Fuel Filter
1. Remove the four screws holding the
filter can to the housing. Remove the
can.
2. Unscrew the filter by turning coun-
terclockwise. Dispose of the old filter
properly. Replace with a new filter.
(Figure 4)
MAINTENANCE
Figure 4
WARNING
WARNING
WARNING

4
3. Wipe clean the filter can seal, groove
and housing. Coat the seal with oil
or light grease and install in the filter
can groove.
4. Place the filter can over the installed
filter. Hold in position and alternately
tighten the four screws until the can
is firm against the housing.
Clean Strainer
1. Remove the four retaining screws on
the strainer coverplate. Remove the
coverplate and strainer. (Figure 5)
Figure 5
2. Using a fine brush, clean the strainer
and reposition in the housing.
3. Wipe clean the strainer coverplate
O-ring, groove, and the housing.
Coat theO-ringwith oilorlightgrease
and install in the coverplate groove.
(Figure 6)
Figure 6
4. Hold the coverplate in position and
replace thefour screwsbyalternately
tighteningscrewsuntil thecoverplate
is firm against the meter housing.
The meter is accurately calibrated at the
factory for use with diesel fuel. Due to
differences in viscosity and flowrates,
the meter may require recalibration to
measure other fuels or to adjust for in-
accuracies.
1. Purge air from the meter and fuel
system by dispensing fuel into a
container until a full flow occurs.
Close the nozzle.
2. Reset the meter counter to zero by
turning the reset knob counterclock-
wise.
3. Fill a graduated calibration container
to a specified quantity. For the great-
est accuracy, be sure the container
is placed on a level surface and a
consistent flowrate is used. When
topping off the calibration container,
use a quick-open and quick-close
method until the mark is reached.
4. Compare the meter display to the
quantity in the container. If the dis-
play does not register the quantity
on the container, adjust the meter
by performing the following:
a. Gain access to the recessed
calibration screw by turning the
calibration screw cover and seal
counterclockwise. Remove the
cover and seal. (Figure 7)
CALIBRATION
Figure 7

5
b. If the meter registered less than
the quantity in the container, turn
the calibration screw clockwise.
If the meter display read more
than the amount in the container,
turn the screw counterclock-
wise.
5. Empty the calibration container
and repeat steps 2 to 4 until the
meter registers the quantity in the
container.
6. Install the calibration screw cover
and seal.
Replace Counter Assembly
or Nutator Kit
1. Pull out on the reset knob to remove.
2. Remove the two screws connecting
the counter cover to the counter as-
sembly. Remove the counter cover.
3. Remove the four screws securing
the counter assembly and gently pull
the assembly free. (Figure 8) Replace
the counter assembly and O-ring, as
required.
Figure 8
Figure 9
NOTE: It may be necessary to place a
screwdriver under the edge of the
nutator and gently pry free.
5. Replace the nutator disc, as neces-
sary. Make sure the nutator disc pin is
secure in the back of the counter as-
sembly before assembling again.
6. To assemble, reverse the above
procedure. Make sure that all O-rings
are in place and lubricated with oil
or light grease.
Replace Calibration Screw
and / or O-Ring
1. Remove the calibration screw cover
and seal by turning counterclock-
wise.
2. Remove the calibration screw and
O-ring by turning the screw counter-
clockwise. (Figure 10) While remov-
ing, count the number of revolutions
required to free the screw.
Figure 10
REPAIR
4. To remove the nutator disc, loosen
the two screws holding the disc in the
meter housing and lift the disc and
O-ring from the main meter housing.
(Figure 9)

6
TROUBLESHOOTING
3. Install the new calibration screw and
O-ring, using the same number of
rotations needed to remove the old
screw. Ensure theO-ringislubricated
and seated properly.
4. Adjust the meter calibration, using
Calibration procedures provided.
Remove Meter
Your meter is designed to allow normal
maintenance and service without remov-
ingthemeter from thefueltransfersystem.
If removal is necessary, use the following
procedure:
1. Drain all fuel from the system.
2. Wearing protective clothing, loosen
the meter connections from other
system components by hand. Do not
use a wrench since it could damage
the meter housing.
3. Using safety precautions, thoroughly
drain excess fuel from the meter.
4. If the meter will not be immediately
installed again, insert plastic plugs
in the inlet and outlet ports.
SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
A. METER COUNTER 1. Broken counter assembly Replace counter assembly.
DOESN’T OPER-
ATE (Normal fuel 2. Foreign material in Remove and clean counter assembly.
delivery) counter assembly
3. Misaligned nutator disc Disassemble meter and align nutator
pin disc pin with the counter assembly.
4. Broken nutator disc pin Disassemble meter and install new
or defective nutator nutator assembly.
assembly
5. Missing or jammed Contact GPI Customer Service.
counter bevel gear
B. METER COUNTER 1. Clogged fuel filter or Replace filter or clean strainer.
DOESN’T OPER- strainer
ATE (Little or no
fuel flow)
C. FUEL LEAKAGE 1. Leakage at counter Contact GPI Customer Service.
2. Leakage between Remove counter cover and inspect
counter cover and for damaged, missing or incorrectly
housing seated seal. Replace as required.
3. Leakage at fittings Disassemble fittings and reseal
using thread tape or a pipe thread
sealing compound approved for use
with flammable liquids.

7
PARTS AND SERVICE
For warranty consideration, parts, or other
service information, contact your local
distributor. If you need further assistance,
please contact the GPI Customer Service
Department in Wichita, Kansas during
normal business hours.
1-800-835-0113
To obtain prompt, efficient service, al-
ways be prepared with the following
information:
1. The model number of your meter.
2. Date of manufacture.
3. Specific information about part num-
bers and descriptions obtained from
the appropriate Illustrated Parts List.
For warranty work always be prepared
with your original sales slip or other
evidence of purchase date.
Please contact GPI before returning any
parts. It may be possible to diagnose
the trouble and identify needed parts in
a telephone call or letter. GPI can also
informyouof anyspecial handlingrequire-
ments you will need to follow covering the
transportation and handling of equipment
which has been used to transfer fuel.
Before packing for shipment, make sure
the meter is thoroughly drained and free
of fuel and vapors. Drain the meter using
procedures in the Repair Section.
SPECIFICATIONS
FM-100 FM-100L FM-200 FM-200L
Unit of Measure Gallon Litre Gallon Litre
Flow Range 4 to 20 GPM 15 to 75 LPM 4 to 20 GPM 15 to 75 LPM
Type Nutating Disc Nutating Disc Nutating Disc Nutating Disc
Housing Aluminum Aluminum Aluminum Aluminum
Max. Working
Pressure 50 PSIG 3.4 bar 50 PSIG 3.4 bar
Inlet / Outlet* 3/4 or 1 in. NPT 3/4 or 1 in. NPT 3/4 or 1 in. NPT 3/4 or 1 in. NPT
Filter or Strainer Filter Filter Strainer Strainer
Max. Batch Total 999.9 9,999 999.9 9,999
Max. Cumulative
Total 99,999 999,999 99,999 999,999
Shipping Weight 5 lbs. 5 lbs./2.3 kg 4 lbs. 4 lbs./1.8 kg
UL Listed Yes Yes, NPT only Yes Yes, NPT only
Dimensions
Width 10.5 in. 26.6 cm 5.5 in. 13.9 cm
Height 4.5 in. 11.4 cm 4.5 in. 11.4 cm
Depth 5.5 in. 13.9 cm 5.5 in. 13.9 cm
* Litre models are also available in BSPP threads with 3/4 or 1 inch inlet and outlet.
Do not return meters or parts with-
out specific authority from the GPI
Customer Service Department. Due
to strict regulations governing ship-
ment of flammable liquids, meters
may be refused and returned to the
sender if sent without authoriza-
tion.
WARNING

8
ILLUSTRATED PARTS LIST
1
2
3
4
5
6
7
8
9
10
11
12
13
16 15 14
18
17
14
FM-100
FM-200