Veeder-Root Red Jacket FXT User manual

Manual No: C051-272 ●Revision: E
Testing Mechanical Leak Detectors
FX Tester

Notice
Veeder-Root makes no warranty of any kind with regard to this publication, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose.
Veeder-Root shall not be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this publication.
Veeder-Root reserves the right to change system options or features, or the information contained in this publication.
This publication contains proprietary information which is protected by copyright. All rights reserved. No part of this publication
may be photocopied, reproduced, or translated to another language without the prior written consent of Veeder-Root.
Contact Red Jacket Technical Support for additional troubleshooting information at 800-323-1799.
DAMAGE GOODS/LOST EQUIPMENT
Thoroughly examine all components and units as soon as they are received. If any cartons are damaged or missing, write a
complete and detailed description of the damage or shortage on the face of the freight bill. The carrier's agent must verify the
inspection and sign the description. Refuse only the damaged product, not the entire shipment.
VR must be notified of any damages and/or shortages within 30 days of receipt of the shipment, as stated in our Terms and
Conditions.
VEEDER-ROOT’S PREFERRED CARRIER
1. Fax Bill of Lading to V/R Customer Service at 800-234-5350.
2. Call V/R Customer Service at 800-873-3313 with the specific part numbers and quantities that were received damaged or
lost.
3. VR will file the claim with the carrier and replace the damaged/missing product at no charge to the customer. Customer
Service will work with production facility to have the replacement product shipped as soon as possible.
CUSTOMER’S PREFERRED CARRIER
1. Customer files claim with carrier.
2. Customer may submit a replacement purchase order. Customer Service will work with production facility to have the
replacement product shipped as soon as possible.
3. If “lost” equipment is delivered at a later date and is not needed, VR will allow a Return to Stock without a restocking fee.
4. VR will NOT be responsible for any compensation when a customer chooses their own carrier.
RETURN SHIPPING
For the parts return procedure, please follow the instructions in the “General Returned Goods Policy” pages of the “Policies and
Literature” section of the Veeder-Root North American Red Jacket Mechanical Products Price Book. Veeder-Root will not accept
any return product without a Return Goods Authorization (RGA) number clearly printed on the outside of the package.
©Veeder-Root 2011. All rights reserved.

Table of Contents
iii
Introduction
FXT Description ................................................................................................................1
U.S. Environmental Protection Agency (EPA) Information ...............................................1
Safety Precautions ............................................................................................................2
Warnings and Instructions ................................................................................................3
IMPORTANT SAFETY INFORMATION ...................................................................3
PRELIMINARY PRECAUTIONS ..............................................................................3
REQUIREMENTS FOR USE....................................................................................4
OPERATING PRECAUTIONS .................................................................................4
Applications ......................................................................................................................5
Static Head Pressure on Mechanical Leak Detector ................................................5
Testing Procedures
Tester Setup with FX2 Series Models ...............................................................................7
Hose Connections ....................................................................................................7
Use of Extender Hoses.............................................................................................7
Simulated Leak Test - 4 Step Test ...................................................................................7
Observation of Leak Detector Opening Time ..................................................................10
Operating Test - Pressure Relief ....................................................................................11
Pump Operation ..............................................................................................................11
Thermal Contraction .......................................................................................................12
Vacuum Test ...................................................................................................................12
To Perform A Vacuum Test....................................................................................13
Resiliency Test ...............................................................................................................13
Using the FX Tester for Testing at the Impact Valve ......................................................13
Installation of the FX Tester at the Impact Valve ............................................................14
Manifolded Pumps with Leak Detectors ..........................................................................15
The FX Leak Detector 3-Step Test......................................................................16
Parts Description & Replacement Parts List
Scale Changing Instructions ...........................................................................................19
Variable Area Flow Meter ...............................................................................................19
Cleaning the Flow Meter .................................................................................................19
To Disassemble......................................................................................................19
Cleaning .................................................................................................................20
Assembly ................................................................................................................20
Evaluation Charts.........................................................................................................22

Table of Contents
iv
Figures
Figure 1. Static head ..............................................................................................5
Figure 2. Example FX tester connection to the Standard pump ............................7
Figure 3. Example FX tester connection to the Red Jacket pump .........................8
Figure 4. FXT selector valve ..................................................................................9
Figure 5. Installing Snap Tap at shear valve ........................................................14
Figure 6. Discharge fluid height limit example .....................................................15
Figure 7. FX Tester operating positions ...............................................................16
Figure 8. Flow meter exploded view ....................................................................20
Tables
Table 1. Test Leak Rate Selections ........................................................................9
Table 2. Red Jacket Pump Operating Pressures ..................................................11
Table 3. FX Tester Parts List .................................................................................18

1
Introduction
The FX Tester (FXT) has been specially designed to work with mechanical leak detectors to offer quick, clean,
easily performed, functional checks. Unique, secondarily contained dry break fittings, called Snap Tap Connectors,
attach to FX2V, and FX2DV (FX2 Series) leak detectors and the tank test port of the submersible pump, or at the
shear valve under the dispenser.
The FX2 Series allows the FXT to be connected to the piping system and perform a leak detector functionality test
without shutting down the submersible pump. Product spillage that occurs when installing other leak detector
testing equipment is avoided. Because the FXT system returns product to the tank during the test period, direct
handling of product used to simulate a leak is eliminated.
FXT Description
This report provides the procedure for functional testing of V-R mechanical leak detectors utilizing the FXT. In
addition to establishing that the unit is functioning, it provides for a demonstration of the leak detectable by subject
system under current conditions. The characteristics of the pumping system in which the line leak detector (LLD) is
installed will affect its performance. This procedure provides some evaluation of the pumping system as well as the
LLD. It can be utilized for further evaluation of the pumping system. Please note that the performance of the
procedures set forth in Section II, A and B is intended to satisfy functionality check requirements for
annual inspection of leak detectors. Section IV of Option A (RJ-21) and Section V-VI of option (RJ-20)
are also intended to satisfy the minimum requirement. For information on this as well as reference
information on the LLD and the pumping system in which it is installed, including symptoms, probable causes,
suggested action, see Red Jacket Mechanical Leak Detector Manual, #5191, and/or 5190
Option A, utilizing the Apparatus to Verify Operation (AVO) will provide a more basic, less extensive approach to
evaluating the V-R LLD. See Form RJ-21 for this basic procedure. Option B, utilizing the Field Test Apparatus
(FTA) offers a finite testing method, See Form RJ-20.
U.S. Environmental Protection Agency (EPA) Information
Under 40CFR280.44(a), EPA has:
1. Defined laboratory performance standards for automatic LLDs (out-of-the-box) prior to installation. V-R
mechanical leak detectors have been constructed to meet the EPA requirements as outlined in
40CFR280.44(a). A copy of our third-party certification is available upon request.
2. Stated that an annual test of the operation of the LLD must be conducted in accordance with the
manufacturer’s requirements.
The EPA requires “...that the LLDs be tested annually to insure that they are properly installed and maintained and
have not been tampered with and are operating in accordance with the manufacturer’s requirements”. In addition,
to assure maintenance of LLD capability, V-R requires that operation of the mechanical leak detector be verified
upon start-up and that testing of the LLD be performed routinely - at least annually. Section IV of Option A (RJ-21)
or Sections V and VI of Option B (RJ-20) or section II of this manual, are intended to meet the minimum
requirement for verifying the functionality of the LLD.
This report, as well as reports RJ-21 and RJ-20, provide the manufacturer’s requirements for testing V-
R mechanical LLDs. The procedures covered in this form and reports RJ-21 and RJ-20, supersede
previously issued procedures for testing V-R LLDs.
Competent mechanical leak detector evaluation requires A) that testing be performed by trained,
qualified personnel and B) consistent, proper procedures involving good maintenance and quality
control of equipment are utilized.
Education on this and all technical aspects of V-R petroleum submersible pumping and monitoring systems is
available.
NOTE

Introduction Safety Precautions
2
It has been established that the obligation of compliance with the appropriate regulations covering USTs is the
owners, with the following guidelines in place in reference to LLDs.
EPA regulations require that the LLD be installed and operating, capable of detecting a catastrophic leak and
tested annually in accordance with the manufacturer’s requirements. The manufacturer’s requirements and
procedures for annual testing of V-R LLDs are covered in Option A, Form RJ-21, Option B, Form RJ-20 and this
publication 051-272-1. While some regulatory bodies have, the EPA has not issued guidelines as to when LLDs
are to be replaced based on quantitative performance. They state that annual quantitative performance tests of
LLDs installed in the field are not required by EPA standards. It is suggested you check with state and local
authorities for any requirements that may be different from those of the U.S. EPA.
Based on the above and other pertinent factors, it is our opinion that the UST owner is the best equipped to
assess their situations and therefore to make the decision as to when subject LLD is to be replaced. We do not
consider it prudent as the manufacturer to make that determination.
We do urge that if after evaluating the pumping system the subject LLD is not demonstrating the capability of
reacting to a leak at the rate of or equivalent to 5 gph at 10 psi (19 lph at 69 kPa) or greater, serious assessment
should be made of the entire pumping system and of replacement of the LLD versus continued use.
We nave no control, influence or participation with reference to the design, operation or quality of any
mechanical leak detectors other than those manufactured and marketed by V-R/Red Jacket
petroleum equipment identification. We, therefore, do not advise or condone use of the information,
procedures or equipment covered in this or any other publication issued by V-R for any equipment
other than V-R petroleum equipment.
For additional assistance with regard to the above or any V-R petroleum equipment, contact Technical Support at
1-800-323-1799.
Safety Precautions
The following safety symbols are used throughout this manual to alert you to important safety hazards and
precautions.
EXPLOSIVE
Fuels and their vapors are extremely
explosive if ignited.
FLAMMABLE
Fuels and their vapors are extremely
flammable.
ELECTRICITY
High voltage exists in, and is supplied
to, the device. A potential shock haz-
ard exists.
TURN POWER OFF
Live power to a device creates a
potential shock hazard. Turn Off
power to the device and associated
accessories when servicing the unit.
WARNING
Heed the adjacent instructions to
avoid equipment damage or personal
injury.
READ ALL RELATED MANUALS
Knowledge of all related procedures
before you begin work is important.
Read and understand all manuals
thoroughly. If you do not understand
a procedure, ask someone who does.
WEAR EYE PROTECTION
Wear eye protection when working
with pressurized fuel lines to avoid
possible eye injury.
APPROVED CONTAINERS
Use metal, clearly marked contain-
ers, suitable for collecting and trans-
porting hazardous fuels during
service.
NOTE
OFF
G
A
S

Introduction Warnings and Instructions
3
In addition to the specified torque values noted in this manual, when properly tightened, all flanged fittings should
have metal-to-metal contact.
Warnings and Instructions
IMPORTANT SAFETY INFORMATION
This section introduces the hazards and safety precautions associated with installing, inspecting, maintaining or
servicing this product. Before performing any task on this product, read this safety information and the
applicable sections in this manual, where additional hazards and safety precautions for your task will be found.
Fire, explosion, electrical shock or pressure release could occur and cause death or serious injury, if these safe
service procedures are not followed.
PRELIMINARY PRECAUTIONS
You are working in a potentially dangerous environment of flammable fuels, vapors, and high voltage or
pressures. Only trained or authorized individuals knowledgeable in the related procedures should install,
inspect, maintain or service this equipment.
Read the Manual
Read, understand and follow this manual and any other labels or related materials supplied with this equipment. If you do not
understand a procedure, call 1-800-323-1719 to locate a qualified technician. It is imperative to your safety and the safety of
others to understand the procedures before beginning work. Make sure your employees and any service contractors
read and follow the instructions.
Follow the Regulations
Applicable information is available in National Fire Protection Association (NFPA) 30A; Code for Motor Field Dispensing
Facilities and Repair Garages, NFPA 70; National Electrical Code (NEC), Occupational Safety and Hazard Association
(OSHA) regulations and federal, state, and local codes. All these regulations must be followed. Failure to install, inspect,
maintain or service this equipment in accordance with these codes, regulations and standards may lead to legal citations with
penalties or affect the safe use and operation of the equipment.
WARNING
This product operates in the highly combustible atmosphere of a gasoline storage tank.
FAILURE TO COMPLY WITH THE FOLLOWING WARNINGS AND SAFETY PRECAUTIONS
COULD CAUSE DAMAGE TO PROPERTY, ENVIRONMENT, RESULTING IN SERIOUS INJURY
OR DEATH.
1. All installation work must comply with the latest issue of the National Electrical Code
(NFPA 70), the Code for Motor Fuel Dispensing Facilities and Repair Garages (NFPA
30A), and any European, national, state, and local code requirements that apply.
2. Turn off, tag, and lockout power to the STP before connecting or servicing the STP.
3. Before installing pipe threads apply an adequate amount of fresh, UL classified for
petroleum, non-setting thread sealant.
4. When servicing unit, use non-sparking tools and use caution when removing or
installing equipment to avoid generating a spark.
5. To protect yourself and others from serious injury, death, or substantial property
damage, carefully read and follow all warnings and instructions in this manual.
OFF

Introduction Warnings and Instructions
4
Prevent Explosions and Fires
Fuels and their vapors will explode or burn, if ignited. Spilled or leaking fuels cause vapors. Even filling customer tanks will
cause potentially dangerous vapors in the vicinity of the dispenser or island.
Working Alone
It is highly recommended that someone who is capable of rendering first aid be present during servicing. Familiarize yourself
with Cardiopulmonary Resuscitation (CPR) methods, if you work with or around high voltages. This information is available from
the American Red Cross. Always advise the station personnel about where you will be working, and caution them not to
activate power while you are working on the equipment. Use the OSHA Lockout/Tagout procedures. If you are not familiar with
this requirement, refer to OSHA documentation.
Working With Electricity Safely
Ensure that you use safe and established practices in working with electrical devices. Poorly wired devices may cause a fire,
explosion or electrical shock. Ensure that grounding connections are properly made. Ensure that you do not pinch wires when
replacing covers. Follow OSHA Lockout/Tagout requirements. Station employees and service contractors need to understand
and comply with this program completely to ensure safety while the equipment is down. Before you start work, know the
location of the Emergency Power Cutoff Switch (the E-STOP). This switch cuts off power to all fueling equipment and
submerged turbine pumps and is to be used in the event of an emergency. The buttons on the console at the cashier’s station
WILL NOT shut off electrical power to the pump/dispenser. This means that even if you press a button on the console labeled
EMERGENCY STOP, ALL STOP, PUMP STOP, or something similar, fuel may continue to flow uncontrolled.
Hazardous Materials
Some materials may present a health hazard if not handled correctly. Ensure that you clean hands after handling equipment. Do
not place any equipment in the mouth.
WARNING! FAILURE TO COMPLY WITH THE FOLLOWING WARNINGS AND SAFETY PRECAUTIONS COULD
RESULT IN PROPERTY DAMAGE, INJURY OR DEATH.
FIRE HAZARD! Do NOT use power tools (Class I Division I and Class I Division II) during the installation or maintenance of
equipment. Sparking could ignite fuel or vapors, resulting in fire.
CHEMICAL EXPOSURE HAZARD! Wear appropriate safety equipment during installation or maintenance of equipment.
Avoid exposure to fuel and vapors. Prolonged exposure to fuel may cause severe skin irritations and possible burns.
REQUIREMENTS FOR USE
• The Red Jacket submersible pumps are designed for use only at facilities dispensing motor fuels.
• The application of Red Jacket submersible pumps must be consistent with NFPA Code 30A, OSHA regulations, and federal,
state and local fire codes, and other applicable local regulations.
• The selection of any Veeder-Root product must be based upon physical specifications and limitations and the product’s
compatibility with the materials to be handled. Veeder-Root makes no warranty of fitness for a particular purpose.
• All Veeder-Root products should be used in accordance with applicable federal, state and local laws, ordinances and
regulations.
OPERATING PRECAUTIONS
•NO SMOKING. Extinguish all open flames and pilot lights, such as on RV appliances.
•TURN OFF cell phones and other electronic devices to avoid distractions while fueling.
•GASOLINE CAN BE HARMFUL OR FATAL IF SWALLOWED. Long-term exposure may cause cancer. Keep eyes and
skin away from liquid gasoline and gasoline vapors. Avoid prolonged breathing of gasoline vapors.
WARNING! Before installing leak detector, review the application section in leak detector manual
#5191 for limitations or restrictions on usage.
NOTICE! This instruction sheet should be kept with the end user of the leak detector for reference.

Introduction Applications
5
When using 117-182 Big-Flo Diaphragm Valve, refer to installation instructions #042-108-1 included
with the valve. When using an FXV model leak detector with adapter housing #038-072-5, refer to
installation instructions #041-415-1 included with the housing. FXV Leak Detectors are for use with
all UL-listed 4-inch Red Jacket models containing a “P” or “AG” prefix; FE Petro UL-listed 4-inch
“STP” models; Tokheim UL-listed 4-inch models — 585A-34 and 585A-150.
WARNING! Tampering with the screws or seals on this leak detector may inhibit operation and will
void warranty.
DO NOT wire submersible pumps to run continuously. Red Jacket line leak detectors will not perform
leak tests on pumping systems that run continuously.
NOTICE! ALL AIR MUST BE OUT OF THE SYSTEM FOR THE LEAK DETECTOR TO WORK PROPERLY.
Before installing leak detector in the pump, fill the system with product by running the pump and
delivering product from each dispenser (starting with the farthest from the pump and working to the
pump) until all air is removed from system.
Certain regulatory bodies require that leak detectors remain in the system after the lines have been installed. The
lines may be purged of air by back-pressuring the lines with an inert gas, such as helium or nitrogen, to a pressure
of 25 psi (172 kPa). This may be done at the impact valve under the dispenser. When this pressure has been
reached, the leak detector will be in the open position. By turning on the pump and gradually bleeding the gas from
the line through a valve at the impact valve of the farthest dispenser, the line may be purged of air.
Applications
Static Head Pressure on Mechanical Leak Detector
The FX Leak Detector is designed to operate when installed into systems which impose a static head on 11
(eleven) feet or less.
When installing a mechanical leak detector in an underground submersible pumping system, the installer must be
aware of the static head that will be placed on the leak detector when in operation (see ‘A’ in Figure 1). The static
discharge head is the vertical elevation from the leak detector body to the point of free discharge.
Figure 1. Static head
‘A’
106-7.eps

Introduction Applications
6
The term ‘head’ is usually expressed in feet whereas pressure is usually expressed in pounds-per-square-inch. The
formula for converting these factors follows:
(A rough equation is 3 feet of gasoline head equals 1 psi).
The history of industry practice concerning location of the submersible pump in relation to the dispenser indicates
that static head is not normally a problem. The general operating parameters for the leak detector dictate that it will
trip or reset at approximately 3.5 to 4 psi or below, and the approximate 11 feet of liquid head or excess of 3.5 to 4
psi is not usually experienced by the leak detector. Typically, FX model leak detectors will overcome static heads of
3.5 to 4 psi.
However, if the static head and subsequent pressure experienced by the leak detector is in excess of the
threshold, the leak detector may not operate. (see the three-step test).
Important Points to Remember:
1. Leaks occurring at a height above the leak detector that exert more fluid pressure than the threshold value
will keep the leak detector from entering the leak sensing position. Such leaks will not be detected.
2. The threshold value for the reset pressure is a result of varying mechanical characteristics in the leak
detector and may vary. Our experience shows that it is possible to encounter leak detectors that will work
in a given situation when others won’t because they have a slightly higher threshold.
The effect of excessive static pressure can be observed when a simulated leak is placed into the line above the
threshold height and then closed before the pump is turned on. Under normal operations, the leak detector will
hesitate at the metering pressure for several seconds before opening up to full pump pressure. With excessive
static head present, the pressure will increase immediately to full pump pressure. If under these conditions a leak
is present, the pump is turned on and full pump pressure is realized immediately, the leak detector is not operating
properly.
The amount of pressure experienced by the leak detector can be determined by installing a pressure gauge on the
line test port of the pump. The gauge must remain at the level of the line test port and should have a low pressure
range (i.e., 0 to 30 psi) to get accurate readings.
After the pump is turned off, use the valve on the test apparatus to bleed the pressure from the highest vertical
point in the system, typically located at the dispenser shear valve. The gauge on the line test port will read the
static head present on the leak detector.
Possible solutions to the problem of excessive static head are:
1. Test the operation of leak detectors. Replace the leak detector with a low threshold attempting to find one with
a higher threshold by observing test results.
2. Modify the system by raising the leak detector to decrease its static head. This can be done by installing a
longer riser pipe between the pump and the tank. Note that this will raise the pump inlet further from the
bottom of the tank by the distance added to the riser.
In all cases, operation of the mechanical leak detector must be verified by inducing a leak and confirming correct
operation of the unit after it is installed at the site.
Pressure
(Lbs./Sq. In.)
Head (feet) x Specific Gravity
2.31
Pressure (psi) x 2.31
Specific Gravity
Head (feet)
=
=

7
Testing Procedu res
Tester Setup with FX2 Series Models
HOSE CONNECTIONS
When installing the FXT onto a submersible pumping system with an FX2 Series LLD, care must be taken to
assure proper connection of the hoses. Only submersible pumps equipped with a tank test port allow the closed
loop testing method to work properly.
USE OF EXTENDER HOSES
Certain situations, such as pumps with a deep bury depth, may require ‘extender hoses’ with the FXT. The 5-foot
(1.5 m) hoses are available from V-R as an accessory. See “Parts Description & Replacement Parts List” on page
18.
Simulated Leak Test - 4 Step Test
This is a general overview of the procedure to properly install the FXT and how to set a leak rate at a given pump
pressure by utilizing Figure 2 (Standard pump example) and Figure 3 (the Red Jacket pump example).
Figure 2. Example FX tester connection to the Standard pump
LINE
PRESSURE
30
30
20
20
1010
10
0
40
50
60
VENT
LEAK
TESTPRESSURE
RELIEF
SELECTOR VALVE
PUMP/LINE
PRESSURE
LEAK RATE
FLOW METER
VALVE
DO NOT OVER
TIGHTEN VALVE
GPH
25
20
15
10
10
15
20
5
1
00
1
5
GPH
G
A
S
O
L
I
N
E
D
I
E
S
E
L
FX Tester
Grade
Sump
45° Elbow
Black Hose
Orange Hose
Snap-Tap
Connectors
Tethered
Cap
(Shown) FX2V
FX2DV
272-1.eps

Testing Procedures Simulated Leak Test - 4 Step Test
8
Figure 3. Example FX tester connection to the Red Jacket pump
The FXT will be required for this procedure. The V-R FX2 Series LLD and the Snap Tap Connectors must be
installed before testing can begin. Refer to FX installation instructions 042-106-1.
1.
a. Connect the black hose of the FXT to the Snap Tap Connector at the tank test port of the pump. The black
hose is the path to the tank. Line pressure can be relieved through this path.
b. Connect the orange hose of the FXT to the Snap Tap Connector on the FX2 Series LLD. The orange hose
is the path to the line.
c. Turn FXT’s Selector Valve to ‘Pump/Line Pressure’ position as shown in Figure 4. When the selector valve
is in this position, the FXT is monitoring actual line pressure. As actual line pressure is displayed on the
compound gauge, specifications can be checked.
d. Observe pump operating pressure. This step may be done while dispensing is in progress. Check pump
operation specifications to verify pump pressure output and relief pressure.
e. From Table 1, below, select a leak rate at which to test. The top row of numbers (starting with 3) are the
choices, reflected in gph.
LINE
PRESSURE
30
30
20
20
10 10
10
0
40
50
60
VENT
LEAK
TESTPRESSURE
RELIEF
SELECTOR VALVE
PUMP/LINE
PRESSURE
LEAK RATE
FLOW METER
VALVE
DO NOT OVER
TIGHTEN VALVE
GPH
25
20
15
10
10
15
20
5
1
00
1
5
GPH
G
A
S
O
L
I
N
E
D
I
E
S
E
L
FX Tester
Grade
Sump
Black Hose
Orange Hose
Tethered
Cap
(Shown) FX2V
FX2DV
272-2.eps
1/4” NPT 45 degree
elbow and tee install
in tank vent port

Testing Procedures Simulated Leak Test - 4 Step Test
9
f. Follow this column down until it intersects with the ‘Pump Operating Pressure’ which was observed in
Step 1c. Record this value (sample chart is provided at the back of this document).
.
Figure 4. FXT selector valve
.
Table 1. Test Leak Rate Selections
Pump
Operating
Pressure
Equivalent Leak Rates at 10 psi
Flow Rates to set at Pump Pressure
3 GPH 4 GPH 5 GPH 6 GPH 7 GPH 8 GPH 9 GPH 10 GPH
20 4.2 5.7 7.1 8.5 9.9 11.3 12.7 14.1
22 4.4 5.9 7.4 8.9 10.4 11.9 13.3 14.8
24 4.6 6.2 7.7 9.3 10.8 12.4 13.9 15.5
26 4.8 6.4 8.1 9.7 11.3 12.9 14.5 16.1
28 5.0 6.7 8.4 10.0 11.7 13.4 15.1 16.7
30 5.2 6.9 8.7 10.4 12.1 13.9 15.6 17.3
32 5.4 7.2 8.9 10.7 12.5 14.3 16.1 17.9
34 5.5 7.4 9.2 11.1 12.9 14.8 16.6 18.4
LINE
PRESSURE
30
30
20
20
1010
10
0
40
50
60
BLACK
ORANGE
VENT
LEAK
TEST PRESSURE
RELIEF
SELECTOR VALVE
PUMP/LINE
PRESSURE
LEAK RATE
FLOW METER
VALVE
DO NOT OVER
TIGHTEN VALVE
GPH
25
20
15
10
10
15
20
5
1
00
1
5
GPH
G
A
S
O
L
I
N
E
D
I
E
S
E
L
Selector Valve

Testing Procedures Observation of Leak Detector Opening Time
10
2.
a. While the pump is running and no nozzles are dispensing, turn the FXT’s Selector Valve to the ‘Leak Test’
position.
b. Using the flowmeter valve, adjust the leak rate to the value recorded in 1f above. this will create the
equivalent desired leak rate.
c. Check the pressure reading to make sure it is still the same as in 1d above. If it is different, repeat step 1e
and 1f for the new pressure before proceeding.
3.
a. Turn off the pump and wait for dispensing to stop. Observe pump pressure fall to seating pressure.
b. Turn the FXT’s Selector Valve to the ‘Pressure Relief’ position.
c. Observe line pressure fall to 0 psi.
4.
a. Turn the FXT’s Selector Valve to the ‘Leak Test’ position.
b. Turn on the pump.
c. Observe the pressure gauge:
• A pressure of approximately 12 - 16 psi (83 - 110 kPa) or less for the FX Series (FX1 Series or FX2
Series) LLDs indicates that the LLD has reacted to the imposed leak and is in its leak sensing mode.
• A Pressure of approximately 25 psi (172 kPa) or greater indicates that the LLD did not see the leak.
d. Disconnect the FXT by first removing the orange hose, then remove the black hose. Replace the caps on
the Snap-Tap fittings.
Observation of Leak Detector Opening Time
1. Rotate the FXT’s Selector Valve to the ’Pressure Relief’ position with the submersible pump off. Observe the
pressure fall to zero.
2. Rotate the FXT’s Selector Valve to the ‘Pump/Line Pressure’ position.
36 5.7 7.6 9.5 11.4 13.3 15.2 17.1 19.0
38 5.8 7.8 9.7 11.7 13.6 15.6 17.5 19.5
40 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
42 6.1 8.2 10.2 12.3 14.3 16.4 18.4 ----
44 6.3 8.4 10.5 12.6 14.7 16.8 18.9 ----
46 6.4 8.6 10.7 12.9 15.0 17.2 19.3 ----
48 6.6 8.8 11.0 13.1 15.3 17.5 19.7 ----
50 6.7 8.9 11.2 13.4 15.7 17.9 ---- ----
Table 1. Test Leak Rate Selections
Pump
Operating
Pressure
Equivalent Leak Rates at 10 psi
Flow Rates to set at Pump Pressure
3 GPH 4 GPH 5 GPH 6 GPH 7 GPH 8 GPH 9 GPH 10 GPH

Testing Procedures Operating Test - Pressure Relief
11
3. Operate the submersible pump. Observe that line pressure will rise to a constant level and pause there
momentarily. At this point, a slight drop on the pressure gauge may be observed followed by an immediate
sharp increase to full line pressure.
For FX Series leak detectors, the constant level (metering pressure) will be approximately 8 to 16 psi (55 -
110 kPa). Full line pressure of approximately 25 to 40 psi (172 - 276 kPa) will also be observed, determined
by the size of the submersible pump and the product it is pumping.
4. Using a stopwatch, observe the approximate opening time in seconds from pump start (zero pressure) to full
pump pressure, 25 to 40 psi (172 - 276 kPa), as being approximately 2.0 to 3.5 seconds for the FX Series
LLD. Longer opening times may be indicative of air in the system, system resiliency or a small leak. See Red
Jacket publications RJ-5191, and the mechanical leak detector manual.
5. Record opening time.
6. Turn off the submersible pump.
Operating Test - Pressure Relief
1. With the FXT’s Selector Valve to the ‘Pump/Line Pressure’ position, observe holding pressure of functional
element. If a standard functional element is used, a holding pressure of between 8 to 20 psi (55 - 138 kPa) is
normally observed. If a precision functional element is used, a holding pressure of about 11 to 13.5 psi (76 -
93 kPa) should be observed. Adjustable functional element models manufactured after February 1995 are also
factory set at 11 to 16 psi (76 - 110 kPa). The holding pressure of approximately 19 to 25 psi (131 - 172 kPa)
should be observed when testing The Red Jacket pump.
2. Record the holding pressure under pressure relief test on the sample test chart.
3. Adjustable functional element models may have their relief pressures changed by turning down the adjusting
screw to increase pressure and turning the adjusting screw upward to decrease relief pressure. The adjusted
holding pressure may be observed as in Step 1.
Pump Operation
The FXT may be used to check pump pressure. With the orange hose connected to the FX2 Series LLD port, the
pressure being delivered by the pump may be observed. The FXT’s Selector Valve must be turned to the ‘Pump/
Line Pressure’ position.
Refer to Table 2 for Red Jacket Pump operating pressures.
Table 2. Red Jacket Pump Operating Pressures
Model
60 Hz
Model
50 Hz
PSI (kPa) PSI (kPa)
Gas Diesel Gas Diesel
1/3 HP 25 (172) 28 (193) 3/4 HP 30 (207) 34 (234)
3/4 HP 28 (193) 32 (221) 1-1/2 HP 32 (221) 36 (248)
1-1/2 HP 30 (207) 34 (234) X4 - 1-1/2 HP 40 (276) 45 (310)
X3 - 1/1/2 HP 43 (297) 49 (338) 2 HP 43 (297) 49 (338)
2 HP 43 (297) 49 (338)

Testing Procedures Thermal Contraction
12
Thermal Contraction
Each winter a condition may exist in which the LLD, in performing its intended purpose, reacts.
The LLD will trip and cause restricted flow when the dispenser nozzle is opened prior to the submersible pump
being turned on when line pressure is at zero. If the line pressure is above zero, the nozzle can be opened prior to
starting the submersible pump, and full flow will be received. The problem is most prevalent in self-serve ‘C’ store
type operations where the attendant is involved in the sale of various items and does not react to console requests
for operation before the nozzle is opened.
The line pressure will drop to zero every few minutes in the winter due to thermal contraction of the product in the
underground piping. Every time the line pressure drops to zero, the LLD resets to its relaxed position. The next time
the submersible pump is started, the LLD will perform a line test. The FX Series LLD takes 2-3 seconds to perform
a line test. The nozzle must be kept closed until the LLD has completed the test. The test cannot begin until the
pump is turned on. When the pump is turned on, the time interval required for the line test to begin will vary. A
mechanical dispenser may take anywhere from 7-9 seconds to reset its computer before a switch is actuated
which turns on the pump and allows the test to begin. In such cases, an electronic solenoid valve with time delay
should be installed on the flow valves of the dispenser. The delay must be set to exceed the dispenser’s reset
interval. When considering an electronic dispenser, the reset is accomplished almost instantaneously and a switch
is actuated which turns the pump on, allowing the test to begin. Even though the reset interval of an electronic
dispenser is considerably shorter than that of a mechanical dispenser, it also requires an electronic solenoid valve
installed on the flow valves to alleviate false tripping problems.
To put this in perspective, every time line pressure drops to zero, there will be an opportunity for someone to open
the nozzle prior to completion of a leak test. If this happens, the LLD will cause restricted flow because the LLD
will interpret an open nozzle as a line leak.
In the summer months, thermal contraction of the product throughout the day rarely occurs. The line pressure may
only drop to zero once a day; usually during the late night hours when the demand for product and the ambient
temperature outside are at their lowest level of the day. It should be noted that occasionally, a rain shower will cool
the pavement down enough to allow line pressure to drop to zero. However, there is usually only one opportunity
per day for someone to open a nozzle prior to starting the submersible. This usually will occur during the first
delivery of the morning.
The opportunity for the nozzle to be opened prior to completion of a line test occurs regularly in the winter,
subsequently causing the leak detector to trip, resulting in limiting flow (3 gpm [11 lpm]). This is due to the line
pressure constantly dropping to zero (which resets the LLD) throughout the day because of thermal contraction of
the product, therefore, requiring additional line tests by the LLD. Replacing LLDs, pump check valves, pump o-
rings or functional elements will not cure thermal contraction. The only cure is to be certain that the nozzle is
closed until the LLD completes the line test.
Thermal contraction is based upon a simple principle. Obviously, during the cold winter months, the temperature of
the product in the underground tank is warmer than the temperature of the underground piping, therefore, warm
product is continually pumped into cold piping. All product has a coefficient of expansion and contraction.
Gasoline has a very high coefficient of expansion and contraction. This means that a slight change in temperature
will result in a rapid volume increase or decrease. When the warm gas is allowed to sit idle in the cold piping, it
rapidly contracts, and line pressure quickly drops to zero.
Vacuum Test
At times, the effects of thermal contraction on gas are so extreme that low pressure areas are created within the
pressurized piping system. The FXT is equipped with a compound gauge which is capable of displaying psi and
inches of mercury. Therefore, if a station is experiencing slow opening times, the FXT can be used to troubleshoot
this problem by verifying the existence or non-existence of a vacuum in the piping system. This may occur
especially after long idle times in the facility such as overnight periods.

Testing Procedures Resiliency Test
13
TO PERFORM A VACUUM TEST
1. Install the FXT.
2. Turn on the submersible. Observe the compound gauge. Make sure line pressure is a least 25 psi (172 kPa).
3. Turn off the submersible. Observe the compound gauge. Make sure line pressure drops to 0 psi.
4. Continue to watch the gauge for approximately 10-15 minutes.
5. If you observe the gauge reading pass 0 psi and falling into the vacuum range, thermal contraction is affecting
the piping system and a good possibility exists that air may be entering the system.
The most severe thermals will occur after dispensing of a large volume of fuel from the dispenser that
is farthest away.
Resiliency Test
1. With the FXT’s Selector Valve set to the ‘Pump/Line Pressure’ position, install a 014-605 fitting onto the black
hose. this will allow a discharge to occur from the dry break fitting on the hose. Put the discharge of the hose
into a measuring container such as a graduated cylinder. Attach the orange pressure hose to the FX2 leak
detector.
2. Turn the submersible pump on and then off.
3. Turn the FXT’s Selector Valve slowly to the ‘Pressure Relief’ position as product begins to flow into the
graduated cylinder.
4. As the pressure falls to 0 psi, record the total volume collected between the holding pressure and zero
pressure.
Values for a typical station should be about 150 ml or less if an FX Series LLD is used. If larger
amounts of product are measured, it is possible air is still present in the system which will prolong
the time required for the LLD to perform the line test.
Using the FX Tester for Testing at the Impact Valve
Some submersible pumps are not equipped with tank vents. In this case, the LLD should be tested from the shear
valve under the dispenser. A Snap-Tap can be installed in the shear valve (see Figure 5). Once the Snap-Tap is
installed, the line can be accessed. A 014-605 fitting must be installed on the black discharge hose to allow flow
to occur into the container.
Snap Tap connectors shall not be left permanently installed into the impact/shear valves and must be
removed upon completion of testing.
NOTE
NOTE

Testing Procedures Installation of the FX Tester at the Impact Valve
14
Figure 5. Installing Snap Tap at shear valve
Installation of the FX Tester at the Impact Valve
1. Carefully bleed any residual pressure present in the system, catching the fluid discharged in a suitable
container. The test plug in the shear valve can be used for this purpose
CAUTION! Use a suitable container to receive product throughout this procedure. Plastic contain-
ers may store static electricity which could discharge, causing severe personal injury, fire and/or
explosion. Use only approved metal type containers. Use adequate absorbents to catch any spill-
age and avoid ground contamination.
2. Install a Snap-Tap connector into the shear valve port.
A 3/8-inch to 1/4-inch reducer may be necessary depending on the size of the test port in the im-
pact valve. This reducer is not called out in the parts list.
Loss of product as well as introduction of air into the system can be minimized by closing the
emergency valve previous to removing the plug from the test port. Reopen the valve after install-
ing the FX Tester.
Check for any leakage of product around any of the fittings on the dispenser impact valve.
The simulated leak must be created at a height between the solenoid valve and the impact valve.
DO NOT attempt to perform a leak test above the solenoid valve. Properly installed leak detec-
tors may not react to leaks above solenoid valves that are normally inside dispensers - some-
times several feet above island level. See Figure 6.
LINE
PRESSURE
30
30
20
20
1010
10
0
40
50
60
BLACK
ORANGE
VENT
LEAK
TEST PRESSURE
RELIEF
SELECTOR VALVE
PUMP/LINE
PRESSURE
LEAK RATE
FLOW METER
VALVE
DO NOT OVER
TIGHTEN VALVE
GPH
25
20
15
10
10
15
20
5
1
00
1
5
GPH
G
A
S
O
L
I
N
E
D
I
E
S
E
L
FX Tester
014-605
Fitting
Black
Hose
Orange
Hose
Shear Valve
G
A
S
NOTE

Testing Procedures Manifolded Pumps with Leak Detectors
15
Figure 6. Discharge fluid height limit example
By raising the discharge point of the simulated leak from the FXT above the test area, additional static head is
placed on the LLD. Static head is defined as the pressure exerted on the LLD by the vertical column of fluid
contained within the piping, from the LLD upward to the point of discharge of the leak. By placing the point of
discharge high enough above the island, sufficient static head pressure could be placed upon the LLD to keep
it from entering the leak sensing position. It is assumed that piping from the LLD to the point of discharge is a
continual, gradual, upward or positive run and does not have a negative (declining) run.
For more information on static head effects, please see Red Jacket Service Bulletin 23-5 and 23-18 or the ap-
plication section of the mechanical leak detector manual covering the effects of static head on mechanical leak
detectors.
If the LLD or pumping system operation differs significantly from that described in this manual,
see leak detector manual #5191 and/or Petroleum Products Service Manual #5190, for possible
causes and solutions.
3. Plug the FXT into the Snap-Tap on the dispenser shear valve as shown in Figure 5 on page 14.
CAUTION! To avoid product spillage, assure the discharge is directed into a suitable container.
4. A leak check may now be performed by following “Simulated Leak Test - 4 Step Test” on page 7. In this case,
product is not being returned directly to the tank via the Snap-Tap fitting on the pump but is collected in the
container.
Snap Tap connectors shall not be left permanently installed into the impact/shear valves and must be
removed upon completion of testing.
Manifolded Pumps with Leak Detectors
For manifolded systems that have two LLDs on a single line and the pumps operate simultaneously, testing must
be performed at the impact valve, as shown in Figure 5.
The minimum leak detectable will be the sum of the two LLD’s capabilities; typically 6 - 7 gph at 10 psi (23-26 lph
at 69 kPa).
If the minimum leak detectable is unacceptable, the LLDs may be tested individually by having only one pump
come on during the test. This will help in determining which LLD is causing the unacceptable rate.
Pumps must be activated simultaneously in manifolded systems. If they alternate, LLDs cannot be
accurately tested.
Dispenser
Grade
Solenoid
Do not discharge
fluid above this line
rj\fxt1.eps
NOTE
G
A
S
NOTE

16
The FX Leak Detector 3-Step Test
The V-R FX Series LLD is a pressure-sensing, diaphragm-operated valve designed to indicate a leak in the piping
between the leak detector and the dispenser.
When the submerged pump is turned on, a controlled amount of product, 3 gph (11 lph) is metered through the
LLD into the piping system. If a leak is present which equals or exceeds this amount, as much product escapes
from the system as is metered in through the LLD. Under this condition pressure cannot build up in the piping
system. When a nozzle is opened and the LLD poppet is in position one (ref. Figure 7), flow is restricted to
approximately 1-1/2 to 3 gpm (5 - 11 lpm). If the poppet of the LLD is in position two when a nozzle is opened,
flow is restricted to approximately 1-1/2 to 3 gph (5 - 11 lph). This is the indication to the operator that the leak is
present.
If there are no leaks, pressure rapidly builds in the system forcing the LLD to open to the full-flow position. In a
system with no leaks, it takes approximately 2 - 3 seconds for the complete test. No further line testing takes place
until the line pressure drops below 3 to 5 psi (21 - 35 kPa) depending on which LLD is installed.
Figure 7. FX Tester operating positions
1. The Trip or Relaxed Position (Closed)
Under normal operating conditions, it is assumed that the lines are filled with gasoline. When the system pres-
sure is less than 3 to 5 psi (21 - 35 kPa), the diaphragm and poppet are in their ‘down’ or ‘tripped’ position.
the position of the valve ‘poppet’ is such as to allow approximately 1-1/2 to 3 gpm (5 - 11 lpm) flow into the
delivery line through a bypass opening in the LLD valve poppet when the submersible pump starts. Since the
system is full, pressure builds rapidly and the poppet moves to the leak sensing position assuming there is no
leak present.
CLOSED
POSITION 1
OPEN
POSITION 3
METERING
POSITION 2