Flomec QM 240 User Manual

SAVE THESE INSTRUCTIONS

QM Series

Positive Displacement Fuel Meter

Owner’s Manual

TABLE OF CONTENTS

General Information ���������������������������2
Installation �����������������������������������������3
Operation �������������������������������������������4
Calibration �����������������������������������������5
Maintenance ��������������������������������������5
Troubleshooting ���������������������������������6
Specications ������������������������������������7
Informative Table - Diesel ����������������� 8
Informative Table - Unleaded ����������� 9
Illustrated Parts List �������������������������10
Parts and Service ����������������������������15

To the owner…

Congratulations on receiving your
FLOMEC® QM150/QM240 Meter� We
are pleased to provide you with a meter
designed to give you maximum reliability
and efciency�

Our business is the design, manufacture
and marketing of liquid handling,
agricultural and recreational products� We
succeed because we provide customers
with innovative, reliable, safe, timely and
competitively-priced products� We pride
ourselves in conducting our business with
integrity and professionalism�

Great Plains Industries, Inc� is a member

of the Petroleum Equipment Institute.

04/2019

We are proud to provide you with a quality
product and the support you need to
obtain years of safe, dependable service�

Victor Lukic, President

Great Plains Industries, Inc�

921528-01 Rev. D

GENERAL INFORMATION

The purpose of this manual is to
assist you in installing, operating and
maintaining your mechanical fuel meter�
Please take a few moments to read
these instructions before installing and
operating your fuel meter�

SAFETY INSTRUCTIONS

The following safety alert symbols are
used in this manual�

DANGER

DANGER indicates a hazardous
situation which, if not avoided, will
result in death or serious injury.

WARNING

WARNING indicates a hazardous
situation which, if not avoided, could
result in death or serious injury.

CAUTION

CAUTION indicates a hazardous
situation which, if not avoided, may
result in minor or moderate injury.

It is your responsibility to:

• Know and follow applicable na­tional, state and local safety codes
pertaining to installing and operat­ing equipment for use with am­mable liquids�

• Know and follow all safety precau­tions when handling petroleum
fuels

• Ensure that all equipment operators
have access to adequate instruc­tions concerning safe operation and
maintenance�

1. Appropriate Use of QM Meter:

a� The UL Approved version of

this meter is for use only with
thin viscosity petroleum fuels
such as gasoline, gasoline­ethanol blends (E15 maximum),
diesel and kerosene�

b� The non-UL Approved version

of this meter is for use only with
diesel fuel and kerosene�

2�

DANGER

Observe precau­tions against re or explosion when
dispensing fuel� Do not operate the
meter in the presence of any source
of ignition including running or hot
engines, lighted cigarettes, or gas
or electric heaters�

WARNING

3�

Any components
such as hose, nozzle, or pump
added to your meter must be stati­cally grounded and approved for
use with petroleum fuels�

WARNING

4�

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�

This meter is designed for the field
measurement of thin viscosity
petroleum fuels only and intended for
use with pump systems up to 40 GPM
(150 LPM) ow range (not intended for
gravity ow systems)� Using mechanical
gears, these meters translate ow data
from positive displacement oval gears
into calibrated units which are indicated
on the face of the meter� This meter is
factory calibrated for diesel fuel� Field
calibration feature is available for other
uids, see Calibration section�

2

INSTALLATION

Liquid can ow in a horizontal direction,
or a vertical direction, but in each case

Before installing your meter, review
the safety instructions given above�
Examine your meter to make sure
there are no visible signs of shipment
damage� Plan your meter installation
by reviewing the following procedures�
Your system must be mounted on a
vented tank� If the tank is unvented,
your local dealer or distributor can
supply a pressure cap�

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 uid
can create pressure spikes that can
damage a meter� Install a thermal relief
valve or otherwise allow for thermal
expansion of the uid�

The owmeter MUST be mounted so
that the rotor shafts are in a horizontal
plane� Mounting the meter with the
mechanical display facing horizontally
will orient the rotor shafts correctly�
The mechanical display should never
face upwards or toward the ground�

the rotor shafts must be in a horizontal
plane�

It is preferred to install the ow-meter
upstream of a ow control or shut-off
valve, as the back pressure provided
by the valve will be benecial to system
accuracy� The flow meter should
remain full of liquid at all times when
connected�

Do not operate the ow-meter directly
discharging to the atmosphere�

Prior to installation, determine whether
horizontal or vertical ow is required�

For vertical ow installations the liquid
should travel from bottom to top, i�e�
it should rise vertically through the
ow-meter� This will ensure that the
ow-meter remains full of liquid, and
will prevent air entrapment in the meter�

The back of the meter housing is
embossed with “INLET” and “OUTLET”
adjacent to its respective port to assist
in correct piping connections�

The weight of the rotors must be
supported by the horizontal rotor shafts�
If installed incorrectly, performance,
life or accuracy could be affected�
(see Figure 1)

gure 1

Horizontal Flow

Correct

Correct

Vertical Flow

InCorrect

3

Changing Display Orientation

1� The mechanical display case can

be removed, rotated and reinstalled
for easy reading with either horizon­tal or vertical ow� (see Figure 2)

2� Using the 5mm hex L-wrench pro-

vided with the meter, remove the (4)
M6 socket screws that attach the
register case to the housing�

3� Without separating the mechanical

display from the housing, rotate to
desired orientation�

4� Reinstall the (4) M6 socket

screws and tighten to 42-46 lb-in
[4�7-5�2 N•m] torque�

Note: By first removing the (4) M4
socket screws and top cover, better
interior viewing can be achieved� This
is not a mandatory step though�

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 us-

ing an appropriately sized nipple�
The bottom of the meter housing
is embossed with “INLET” and
“OUTLET” adjacent to its respec­tive port to assist in correct piping
connections�

4� Install other system components

onto the meter and tighten�

OPERATION

ALWAYS FOLLOW SAFETY PRECAUTIONS
WHEN OPERATING THIS EQUIPMENT. REVIEW
THE SAFETY INSTRUCTIONS. Before each

use, visually check the meter to ensure
it is securely connected to other system
components and there is no leakage�
Promptly wipe spilled fuel from the
meter’s exterior and other system
components�

The large meter display represents
the Batch Total for each fuel delivery�
Before dispensing, reset the Batch
Total to zero by turning the knob� (see

Figure 3)

gure 2

Meter Installation

1� Remove the protective plugs from

the meter inlet and outlet ports� The
inlet port has a 100 mesh stainless
steel conical strainer installed�

CAUTION

The mesh strainer must always be
installed when operating the meter;
otherwise, particles may enter the
meter chamber and disrupt the
smooth operation of the oval gears�

4

gure 3

The small display represents the
Cumulative Total of all fuel deliveries
and cannot be reset�

CALIBRATION

The meter is accurately calibrated at the
factory for use with diesel fuel� Due to
differences in viscosity and ow rates,
the meter may require recalibration
to measure other fuels or to adjust
for inaccuracies� A gear replacement
kit is available (PN 139500-15, see
Illustrated Parts List section) to
convert the meter to unleaded fuels�

1� To adjust the calibration of the me-

ter, gain access to the calibration
screw by performing the following:
(see Figure 4)

2� Remove the back plate and the

(4) screws retaining it� The O-ring
seal under the plate must not be
damaged�

3� Using the 5MM hex L-wrench

provided with the meter, adjust the
calibration screw as required�

4� Note: The calibration screw set-

ting may have been adjusted at
the factory� The gasoline setting
is approximately fully closed (turn
clockwise)� Do not overtighten the
screw against the seat�

at regular intervals, especially if reduced
ow is encountered�

Clean or Replace Strainer

1� Remove the socket screws at the

inlet tting� Remove the tting, O­ring and strainer� (see Figure 5)

gure 5

2� The strainer rim is pressed into the

housing inlet but can be removed
by carefully grasping the end with
pliers and pulling with a wiggling
motion until free�

3� Using a ne brush, clean the strainer�

Replace the strainer as necessary�

4� Wipe the housing inlet clean and

reinstall strainer, pressing it into
the strainer bore� It is designed to
be eld pressed back into place
using the end of a clean 1” pipe
nipple or similar tube tool using light
hammer taps�

gure 4

5� Reinstall the plate, (4) screws

and the O-ring seal if removed�
Tighten (4) screws to 42-46 lb-in
[4�7-5�2 N•m] torque�

MAINTENANCE

The meter’s strainer should be cleaned

CAUTION

The mesh strainer must always be
installed when operating the meter;
otherwise, particles may enter the
meter chamber and disrupt the
smooth operation of the oval gears�

5� Wipe clean the tting and O-ring

groove� Coat the O-ring with oil or
light grease and seat into the tting
groove�

6� Reinstall the inlet tting and screws�

Tighten screws to 42-46 lb-in
[4�7-5�2 N•m] torque�

5