nvent Raychem TT-FFS, Raychem TraceTek TT-FFS-EEC-100, Raychem TraceTek TT-FFS-EEC-250 Installation Manual

TT-FFS Fast Fuel Sensors

Installation Manual

nVent.com | ii

Important Safeguards

The nVent RAYCHEM TraceTek Fast Fuel Sensor (FFS)
must be installed correctly to ensure proper operation
and detection of spilled hydrocarbons. Read these
important warnings and carefully follow all of the
installation instructions.

• Approvals and performance are based on the use
of nVent Thermal Management parts only. Do not
substitute parts, particularly the shrink tubing used to
seal the connectors.

• All installation and connection should be done without
power applied to protect the equipment and the
installer.

• Take care not to touch or scratch the sensor material
inside the FFS body. Damaging this material will
render the unit non-functional.

• Connector heat shrink tubing seals require the use of
a heat gun that produces temperatures which can burn
exposed skin. Gloves are recommended while using
the heat gun and hands kept well out of the way of the
air stream.

nVent.com | iii

Table of Contents

1

General Information 1

2

Pre-Installation Checks 4

3

General Installation Instructions 7

4

Application Specific Installation Instructions 11

5

Commissioning Section 19

6

Care and Maintenance 26

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nVent.com | 1

1

General Information

1.1 Use of the Manual

This manual covers installation of the nVent
RAYCHEM TraceTek Fast Fuel Sensor (FFS) for
hydrocarbon fuel leak detection in commercial
and industrial applications. The manual covers
general area preparation and sensor installation,
wiring details, testing and periodic maintenance
for the FFS only.

Other components are required to create a
fully functioning hydrocarbon leak detection
and alarm system but installation of those
components is not covered in this manual. A
list of the common product installation manuals
which may also be required are as follows:

Title Doc No.

FFS Environmental Cover
(for outdoor use if necessary)

H58519

Float Assembly Installation Instructions H59200
FFS Care and Cleaning Instructions H58307
FFS Hazardous Area Parameter and

Application Guide

H57919

Probe Tester Operating Instructions H58496
TTSIM-1 Installation Manual H56830
TTSIM-1A Installation Manual H57338
TTSIM-2 Installation Manual H57437
TTC-1 Sensing Module Installation

Manual

H53813

TTDM-128 Alarm Panel Installation
and Operations Manual

H57341

TT-TS12 Touch Screen Alarm Panel
Installation and Operations Manual
(UL-508 Compliant)

H80856

TT-TS12-E Touch Screen Alarm Panel
Installation and Operations Manual
(CE Compliant)

H81299

This manual assumes that a proper leak detection
system design using the FFS has been completed
and that all system components are available and
ready for installation.

1

General Information

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For additional information contact your local
nVent Dealer or Representative or contact:

nVent Thermal Management
Tel: [phone]

Fax: [phone]
[e-mail]

nVent.com

Important: For warranty and agency

approvals to apply, the instructions that are
included in this manual and the product
packages must be followed.

1.2 Storage

• Store the FFS in a clean dry place in its
shipping box until ready for installation.

• Storage temperatures may not exceed –40°C
(–40°F) to 85°C (185°F).

• Protect the FFS from mechanical damage.

1.3 Safety Guidelines

The safety and reliability of any fuel leak
monitoring system depends on the quality of the
products selected and the manner in which they
are installed and maintained. Incorrect design,
handling, installation or maintenance of any of
the system components could impact the ability
of the overall system to detect and report fuel
leaks. To minimize these risks and to ensure
that the system performs reliably, read and
carefully follow the information, warnings and
instructions in this guide.

Pay special attention to the following:

• Instructions marked

Important

• Safety warnings identified as

WARNING

1

General Information

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1.4 Approvals

The FFS is approved by FM and Baseefa for use
in hazardous areas.

F

M

APPROVED

IS/Class I, Div. 1, Groups A, B, C, D/T4; Class I Zone 0, AEx ia
IIC T4
NI/Class I, Div. 2. Groups A, B, C, D/T4; Class I Zone 2, Group
IIC T4

Baseefa11ATEX0221X
IECEx BAS 11.0111X

II 1 G

Ex ia IIC T4 Ga (–40°C ≤ ta ≤ +85°C) (Ui = 15V)
Ex ia IIA T4 Ga (–40°C ≤ ta ≤ +85°C) (Ui = 28V)

1.5 Warranty

nVent’s standard limited 24 month warranty
applies to all products. A copy of the warranty
can be found at nVent.com

2

Pre-Installation Checks

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To ensure an efficient and successful installation,
obtain all of the necessary equipment and
ensure the installation area is clear of debris and
provides a safe working environment.

2.1 Tools Required

• Gloves

• Safety Glasses

• Wire Cutters

• Electric Heat Gun

• Specialty Tools — the tools necessary to
connect the FFS Mounting Bracket for your
specific application. Typical installation areas
consist of a concrete floor, metal plate or
container or wooden joist. Assemble the tools
necessary to secure a bolt or screw into the
material for your specific installation area.

2

Pre-Installation Checks

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2.2 Installation Components

• FFS

– 100 mm version, 1 ft, 3 ft or 10 ft lead, with

or without a metal connector

– 250 mm version, 1 ft, 3 ft or 10 ft lead, with

or without a metal connector

• nVent RAYCHEM TraceTek Probe Tester – To
confirm FFS functionality before installation.

• Probe Tester Operating Instructions (H58496)

• Mounting Bracket Kit (includes 2 plastic zip ties)

• nVent RAYCHEM TraceTek Leader Cable
to connect the FFS to the Sensor Interface
Module

– TT-MLC-MC (PN 330065-000) for Indoor

Commercial Applications

– TT-MLC-MC-BLK (PN 133332-000) for

Outdoor and Industrial Applications

2.3 Pre-Installation Test

Remove the FFS from its packaging and
connect it to the Probe Tester using the
metal connectors. If your FFS does not have
a connector, use the alligator clip adapter to
connect it to the Probe Tester.

Once connected, follow the instructions in the
Probe Tester Operating Instructions (H58496) to
confirm that the FFS is functioning properly.

If the Probe Tester indicates the FFS is in alarm,
clean the FFS with Isopropyl Alcohol according
to the Care and Cleaning Instructions (H58307).
Once the FFS has been cleaned, retest it with the
Probe Tester to ensure it is operational.

If the FFS does not reset after this procedure,
contact your local nVent representative to obtain
a replacement unit.

2

Pre-Installation Checks

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FFS

(100 mm)

FFS

(250 mm)

Probe Tester

Mounting Bracket
and Cable Ties

FFS Installation
Instructions

Leader Cable

– TT-MLC-MC or
– TT-MLC-MC-BLK

3

General Installation Instructions

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3.1 Installation Orientation

The FFS is designed to be mounted upright with
the leader cable coming out of the top. This
positions the sensor as close to the floor or fuel
location as possible and minimizes the amount of
fuel required to trigger an alarm. This orientation
is recommended whether the FFS is mounted
on a floor, in a sump or in a floating assembly.
Regardless of the mounting hardware used, this
is the recommended mounting position.

3.2 Mounting Bracket

A Mounting Bracket kit is available which includes
a versatile stainless steel bracket with zip ties to
secure the FFS in position. The mounting bracket
includes a variety of round and oval openings
which accept fasteners up to 0.250" (M6). This
kit provides a simple way to mount the FFS to a
variety of surfaces and structures.

3

General Installation Instructions

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3.3 Selecting an FFS

The FFS comes in two lengths; 250 mm and 100
mm. The 100 mm devices are suitable for general
use in fuel detection where the fuel will spill onto
a floor or other surface. The 250 mm devices
are designed to be used in sumps and other
applications where fuel may pool or collect on the
surface of water and the water level may vary due
to rain or other sources. The longer 250 mm sensor
length will remain effective for larger variations in
water level than the 100 mm device.

Note: While the FFS is water-resistant, it is not
intended for applications where it is permanently
immersed in water. Refer to the FFS Data Sheet
(H57977) for guidance on water resistant
capability.

3.9" (100 mm)
Active region

5.7" (145 mm)

1.0"

(25 mm)

1.0"

(25 mm)

9.8" (250 mm)
Active region

11.6" (295 mm)

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General Installation Instructions

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Varying lengths of leader cable are available on
the standard FFS as well as an option to include
a connector.

• Select from 1’, 3’ or 10’ leader cable lengths
depending on the needs of your particular
application. If the FFS is to be mounted in a
float assembly, the 10’ leader is recommended
to accommodate the up/down travel of the
float assembly as the water level varies.

• End termination options include a water tight
connector compatible with other nVent RAYCHEM
TraceTek cables or simple pig-tailed leads. The
connectors have the advantage of straightforward
connection in the field and a water-sealed
interface when assembled in accordance with the
manufacturer’s recommendations. The simple
pig-tailed leads can be used if the FFS is to be
connected to terminal blocks in a junction box or
similar enclosure.

3

General Installation Instructions

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3.4 Positioning the FFS

The FFS should be placed in a location which is
protected from damage due to normal vehicle,
personnel or equipment traffic but highly likely
to come in contact with any leaked fuel.
This includes consideration of low points in the
floor where leaked fuel may pool or equipment
locations, such as fuel tanks, fuel line valves and
filters, where leaks are most likely to occur.

The recommended mounting configuration of
the FFS is with the open end touching the floor.
This positions the sensor board as close to the
floor as possible allowing it to detect any fuel
spill as quickly as possible.

The FFS body should be secured to the
mounting bracket via zip ties or some other
removable retention mechanism. It may be
desirable to move the FFS out of the way during
equipment maintenance, either to protect it from
damage or prevent a false alarm due to fuel
spilled during maintenance activities. Therefore,
the retention method used should allow easy
removal and re-installation.

4

Application Specific
Installation Instructions

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The following sections provide installation
instructions and recommendations for some of
the standard fuel leak detection applications.

4.1 Diesel Generators - Indoor

The first step to installing the FFS for leak
detection around diesel generators is to define
the location of the sensor.

• If the diesel generator is installed in a recessed
area which is designed to contain any leaked
fuel, then the FFS should be mounted in the
recessed area.

– Find the ideal mounting location by spilling

water at different spots within the recessed
area to determine the point to which most
spilled fluid will flow to.

– Mount the FFS in this spot.

4

Application Specific
Installation Instructions

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• If the diesel generator is not recessed, then it
is recommended that a weir be constructed
around the generator to contain any leaked
fuel. The FFS should then be mounted within
the weir to ensure contact with any leaked fuel.

– ¾" (2 cm) angle iron or similar can be used

to construct the weir.

- Secure to the floor using appropriate bolts,
screws or glues.

- Seal the corners and floor interfaces to
prevent fuel leakage out of the weir.

– Find the ideal mounting location by spilling

water at different spots within the weir to
determine the point to which any spilled fluid
will flow.

– Mount the FFS in this spot.

4

Application Specific
Installation Instructions

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4.2 Fuel Filters and Valves

Fuel Filters, Valves and other points at which
pipes interface or connect represent the highest
probability of becoming a leak point. A weir
should be built around the potential leak point or
equipment to contain any leaked fuel.

• ¾" (2 cm) angle iron or similar can be used to
construct the weir.

– Secure to the floor using appropriate bolts,

screws or glues.

– Seal the corners and floor interfaces to

prevent fuel leakage out of the weir.

• The FFS should then be mounted within the weir.

4

Application Specific
Installation Instructions

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4.3 Sumps and Run-Off Protection

The FFS may be used to detect pooling of leaked
fuel in water sumps or fuel floating on water in
sumps, water storage pools and storm drains, etc.

If your application requires the FFS to be used
in a float system to detect fuel leaks and
contamination on top of the water, then refer to
the TraceTek FFS and Float Assembly Installation
Manual (H59200) for complete details on this
type of installation.

Fixed location installation of the FFS in sumps
and drains may be accomplished by fixing the
mounting bracket directly to the wall of the sump
with the right angle bend at the bottom and
facing out. This provides support for the FFS
so that it does not simply slip out of the zip ties
over time. Mounting location should be chosen
such that the FFS is centered in the desired fuel
detection zone of the sump or drain. The 250 mm
version of the FFS is recommended for these
installations as it provides a longer sensor and
can accommodate larger variations in water level.

4

Application Specific
Installation Instructions

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4.4 Fuel Storage Tank Overflow Protection

Large Fuel Storage Tank overflow protection is
normally provided at two points as necessary:

1) Within the overflow containment ring around

the bottom of the tank

2) On the roof for tanks utilizing floating roof

systems

Overflow Containment Ring Installations

The FFS can be mounted anywhere in the
overflow containment ring that is convenient. It
is recommended that the placement be against
the tank side of the containment ring in order
to protect it from damage. Installation of the
FFS should be flush with the bottom of the
containment ring surface.

4

Application Specific
Installation Instructions

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Floating Roof Installations

The FFS can be used to detect breaks in the
seal between the tank wall and roof for floating
roof systems. A single or several FFS may be
mounted on the floating roof at its perimeter.

• The mounting bracket may be used with an
appropriate connection method to ensure the
roof integrity is not compromised.

• Sufficient jumper or leader cable must be
used to allow full range of roof motion without
creating any tension on the FFS connector or
connection cable(s).

4

Application Specific
Installation Instructions

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4.5 High Dirt and Wind Environments

For applications in which the FFS is subjected
to high winds and potentially abrasive materials
like sand, the Extreme Environmental Cover is
recommended. The cover blocks blown dust and
debris from abrasively damaging the Fuel Sensor
material but allows leaked fuel to flow up from the
bottom and through the holes in the cover to reach
the sensor. Using the cover will prolong the life of
the FFS when used in outdoor environments.

2

00

DIESEL

4

Application Specific
Installation Instructions

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This cover comes in two versions, one for each
size of the FFS.

• TT-FFS-EEC-100, Part Number: P000001142

• TT-FFS-EEC-250, Part Number: P000001143

Detailed installation instructions for assembling
the Extreme Environmental Cover (EEC) onto
the FFS are provided in the EEC Installation
Instructions (H58519).

5

Commissioning Section

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Once installed, both the FFS and the nVent
RAYCHEM TraceTek Leak Detection System
should be tested to confirm an alarm will be
generated at the point of user interface. The
user interface could be the Sensor Interface
Module (TTSIM), TTC-1, a nVent RAYCHEM
TraceTek master controller (TS12 or TTDM-128)
or a custom built interface connected to an
nVent RAYCHEM TraceTek controller provided by
a third party. FFS functional testing can only be
performed by applying a hydrocarbon fluid to the
sensor and monitoring the response. Therefore,
two methods of Leak Detection System and FFS
testing are provided. The first procedure leaves
the FFS installed in place and exposes it to a
hydrocarbon. Since application of a hydrocarbon
in the FFS mounting location may not be allowed
by facility regulations, a second procedure is
provided where the FFS and the Leak Detection
System response are confirmed separately. This
allows the FFS to be functionally tested in a safe
area if desired.

5.1 Leak Detection System Commissioning

CAUTION: Functional testing requires the use
of hydrocarbons which can be flammable.
Even though very small amounts of the
recommended hydrocarbons are necessary
to create a leak alarm from the FFS, they are
still exposed to the environment and present
an ignition risk. Use caution when handling
these materials to minimize the risk of ignition.
Check with your facility regulations to ensure
the testing recommended below is within the
local guidelines. If they are not, then functional
testing must be done in an approved location.

5

Commissioning Section

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Note: Creating a leak indication with the
FFS can be accomplished using a low viscosity,
quickly evaporating hydrocarbon such as
naphtha or lighter fluid. These materials will
produce the desired hydrocarbon detection
response from the FFS while quickly evaporating
and allowing the FFS to reset. Higher viscosity
hydrocarbons can be used but the time required
to reset the FFS for operation will be longer.
Additionally, high viscosity hydrocarbons will,
over time and multiple test sequences, resist
cleaning and eventually the FFS will not reset.
Therefore, the low viscosity, quickly evaporating
materials are highly recommended.

5.1.1 Functional Testing – FFS In System

Where possible, functional testing of the FFS
with it connected in the full nVent RAYCHEM
TraceTek system is preferred as this will validate
functionality of the system in addition to that of
the FFS.

CAUTION: Before handling any flammable
hydrocarbon, remember to put on the appropriate
personal protective equipment (PPE). Fuel
resistant gloves and safety glasses are the
minimum requirement. Check with your local
safety requirements and follow their procedures
for PPE and handling of flammable liquids.

CAUTION: when applying fluid to the FFS, be
sure not to touch the sensor material with the
fluid applicator (dropper, pipette or spray tip,
etc.). Doing so may damage the sensor and
render the FFS inoperable.

To functionally test the FFS use the following
procedure:

1) Verify that the leak detection circuit using

the FFS is not in alarm nor has any service or
trouble alarms. If any of these alarms exist
on the circuit, then fix them or use the Probe
Tester method to functionally test the FFS.

a. Verify that no alarms exist at the Sensor

Interface Module (TTSIM) or TTC-1.

5

Commissioning Section

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b. If applicable, verify that no alarms

exist at the master controller (TS12 or
TTDM-128).

c. If applicable, verify that any third party

systems are not indicating an alarm.

2) Apply a small amount of the test

hydrocarbon fluid to the sensor board inside
the orange FFS housing.

a. Five (5) drops of a low viscosity

hydrocarbon like naphtha should be
sufficient to create an alarm response
from the FFS.

b. Keep the applicator tip outside of the

orange FFS cover.

3) Check the alarm output from the TTSIM or

TTC-1.
a. The Leak LED should be lit.

4) If applicable, check the alarm output from
the master controller to confirm that an
alarm has been generated by the FFS.

a. TS12 – Audible alarm will sound and the

appropriate circuit listing on the touch
screen display will turn red.

b. TTDM-128 – Audible alarm will sound,

the Leak LED on the front panel will
light and a leak notification will be
displayed on the LCD text display for the
appropriate circuit.

c. If a fast response is not observed, check

the Alarm Delay settings to ensure that the
alarm delays are not set to a large value.

5) If applicable, check the alarm output from
the third party system to confirm that an
alarm has been generated by the FFS.

a. Refer to the third party system

information to determine the appropriate
leak alarm response.

5

Commissioning Section

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6) If an alarm is not observed after the Alarm
Delay times, clean the probe according to
the Care and Cleaning instructions (H58307)
to ensure no contamination is preventing the
test fluid from contacting the sensor board,
and retest. Or contact your local nVent
representative.

7) Once the leak detection alarm has
been confirmed, reset the FFS. If a light
hydrocarbon such as naphtha was used, the
FFS will automatically reset after a few hours
due to evaporation. If a heavier hydrocarbon
was used, follow the cleaning procedure
specified in the FFS Care and Cleaning
Instructions (H58307).

8) Confirm that the FFS has reset and is ready
for use. Confirm that all alarms in the Leak
Detection System are cleared and reset.

5.1.2 Functional Testing – Separate FFS Testing

If it is not suitable to functionally test the FFS
where it is installed due to safety or other
considerations, the Leak Detection controllers/
alarm panels and the FFS can be tested
separately. The Leak Detection controllers/alarm
panels can be tested by attaching a Mapping
Cap (Part number P000000871, TT-MAPPING­CAP-MC) at the end of the Modular Leader
Cable, to simulate a leak. The FFS may be
removed from its location and functionally
tested using the portable battery operated
Probe Tester (Part number P000001048, TT-FFS
PROBE TESTER) or any appropriate TraceTek
controller located in a safe location.

Leak Detection Controllers/Alarm Panels
Functional Testing

To verify that the Leak Detection System
controllers/alarms and leader/jumper cables are
functioning correctly use the following procedure:

1) Verify that the leak detection circuit using
the FFS is not in alarm nor has any service
or trouble alarms. If any of these alarms
exist on the circuit, they must be fixed before
attempting to connect and functionally test
the FFS.

5

Commissioning Section

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a. If applicable, verify that no alarms

exist at the Sensor Interface Module
(TTSIM), TTC-1 or other nVent RAYCHEM
TraceTek controller.

b. If applicable, verify that no alarms

exist at the master controller (TS12 or
TTDM-128).

c. If applicable, verify that any third party

systems are not indicating an alarm.

2) Remove the FFS from its mounting bracket
and unscrew the metal connector. It will be
necessary to remove the shrink tube seal
which should have been applied over the
connectors.

3) Connect the Mapping Cap to the jumper
cable in place of the FFS. (The Mapping
Cap simulates a leak alarm at the sensor
location).

4) Check the alarm output from the TTSIM or
TTC-1.

a. The Leak LED should be lit.

5) If applicable, check the alarm output from the
master controller to confirm that an alarm
has been generated by the Mapping Cap.

a. TS12 — Audible alarm will sound and the

appropriate circuit listing on the touch
screen display will turn red.

b. TTDM-128 — Audible alarm will sound,

the Leak LED on the front panel will
light and a leak notification will be
displayed on the LCD text display for the
appropriate circuit.

c. If an immediate response is not

observed, check the Alarm Delay settings
to ensure that the alarm delays are not
set to a large value.

5

Commissioning Section

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6) If applicable, check the alarm output from the
third party system to confirm that an alarm
has been generated by the Mapping Cap.

a. Refer to the third party system

information to determine the appropriate
leak alarm response.

7) If an alarm is not observed after the Alarm
Delay times, there may be an issue with the
cabling or the Mapping Cap connection.
First confirm that the Mapping Cap is
properly connected to the jumper cable. If
the system continues to indicate that there
is no leak on that circuit, then more in-depth
troubleshooting is required. Refer to the
Sensor Interface Module or Master Control
system manuals or contact your local nVent
representative for assistance.

8) Once the leak detection alarm has been
confirmed, the Mapping Cap may be
replaced with the functionally tested FFS.

5.1.3 FFS Functional Testing In A Safe Location

To functionally test the FFS, use the following
procedure:

1) Remove the FFS from its mounting bracket
and unscrew the metal connector. It will be
necessary to remove the shrink tube seal
which should have been applied over the
connectors. Transport the FFS to the safe
test area. The FFS may either be tested
with a Controller or a Probe Tester. If using
a Probe Tester, follow steps 2) through 8)
below. If using an nVent RAYCHEM TraceTek
controller, connect the FFS to the controller,
and follow steps 1) through 8) shown on
pages 22-24 Section 5.1.1.

2) Connect the FFS to the Probe Tester.
a. If the LEDs on the Probe Tester do not

flash, proceed to Step 3.

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Commissioning Section

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b. If the LEDs on the Probe Tester begin

to flash immediately (once every
second), then the FFS is indicating
that it is already in alarm. Remove the
FFS and clean it using the procedure
defined in the TT-FFS. Care and Cleaning
Instructions (H58307).

3) With the FFS connected to the Probe Tester,
press and hold the red button on the Probe
Tester. All three LED’s on the front of the
Probe Tester should flash once per second.
This indicates that the FFS is connected,
functional and not in alarm. Release the Red
button on the Probe Tester.

4) Apply a small amount of the test
hydrocarbon fluid to the sensor board inside
the orange FFS housing. Five (5) drops of a
low viscosity hydrocarbon like naphtha or
lighter fluid should be sufficient to create an
alarm response from the FFS.

5) The three LEDs on the Probe Tester should
begin to flash once per second within 10
seconds of applying the hydrocarbon to the
sensor board.

a. If a fast response is not observed,

confirm that the hydrocarbon did contact
the grey material on the sensor board
inside the orange housing.

b. Apply additional hydrocarbon if

necessary.

c. If there is no response, contact your local

nVent representative for assistance.

6) Once the leak detection alarm has been
confirmed, clean the FFS using the
procedure specified in the FFS Care and
Cleaning Instructions (H58307).

7) Confirm that the FFS has reset and is ready
for use by connecting it to the Probe Tester
and verifying that the LEDs do not flash until
the Red Button has been pushed.

8) The unit may now be returned to service.

6

Care and Maintenance

nVent.com | 26

Regular care and maintenance of the FFS is
recommended, particularly for outdoor
applications. The FFS should be cleaned and
functionally checked every six (6) months to
confirm operation. No other care is required.

6.1 Cleaning

Cleaning Instructions for the FFS are provided
in the FFS Care and Cleaning Instructions
(H58307). This process is used during both
maintenance and to reset the FFS if it has been
in contact with hydrocarbons from a real leak.

6.2 Functional Testing

Functional testing may be performed with the
FFS in place or separately using the Probe
Tester.

System Functional Testing

If functional testing of the complete system
is desired, refer to the test steps in the
Commissioning Section 5.1.1.

FFS Only testing

If only the FFS is to be tested with the Probe
Tester, use the following procedure:

CAUTION: Functional testing requires the use
of hydrocarbons which can be flammable. Even
though very small amounts of the recommended
hydrocarbons are necessary to create a leak
alarm from the FFS, they are still exposed to the
environment and present an ignition risk. Use
caution when handling these materials to minimize
the risk of ignition. Check with your facility
regulations to ensure the testing recommended
below is within the local guidelines. If they are
not, then functional testing must be done in an
approved location.

6

Care and Maintenance

nVent.com | 27

CAUTION: Before handling any flammable
hydrocarbon, remember to put on the
appropriate personal protective equipment
(PPE). Fuel Resistance gloves and safety
glasses are the minimum requirement. Check
with your local safety requirements and follow
their procedures for PPE and handling of
flammable liquids.

CAUTION: when applying fluid to the FFS, be
sure not to touch the sensor material with the
fluid applicator (dropper, pipette or spray tip,
etc.). Doing so may damage the sensor and
render the FFS inoperable.

Note: Functional testing can be done
using a low viscosity, quickly evaporating
hydrocarbon such as butane or lighter fluid.
These materials will produce the desired
hydrocarbon detection response from the FFS
while quickly evaporating and allowing the
FFS to reset. Higher viscosity or more readily
available hydrocarbons can be used but the
time required to reset the FFS for operation
will be longer. Additionally, high viscosity
hydrocarbons will, over time and multiple test
sequences, resist cleaning and eventually the
FFS will not reset. Therefore, the low viscosity,
quickly evaporating materials are highly
recommended.

To functionally test the FFS with the Probe
Tester, use the following procedure:

1) Remove the FFS from its mounting bracket
and unscrew the metal connector. It will be
necessary to remove the shrink tube seal
which should have been applied over the
connectors. Transport the FFS to the test area.

6

Care and Maintenance

nVent.com | 28

2) Connect the FFS to the Probe Tester.
a. If the LEDs on the Probe Tester begin to

flash immediately (once every second),
then the FFS is indicating that it is already
in alarm. Remove the FFS and clean it
using the procedure defined in the FFS
Care and Cleaning Instructions (H58307).

b. If the LEDs on the Probe Tester do not

flash, proceed to Step 3.

3) With the FFS connected to the Probe Tester,
press and hold the red button on the Probe
Tester. All three LED’s on the front of the Probe
Tester should flash once per second. This
indicates that the FFS is connected, functional
and not in alarm. Release the Red button on
the Probe Tester.

4) Apply a small amount of the test
hydrocarbon fluid to the sensor board inside
the orange FFS housing. Five (5) drops of a
low viscosity hydrocarbon like butane should
be sufficient to create an alarm response
from the FFS.

5) The three LEDs on the Probe Tester should
begin to flash once per second within 10
seconds of applying the hydrocarbon to the
sensor board.

a. If an immediate response is not

observed, confirm that the hydrocarbon
did contact the grey material on the
sensor board inside the orange housing.

b. Apply additional hydrocarbon if necessary.

6) Once the leak detection alarm has been
confirmed, clean the FFS using the
procedure specified in the FFS Care and
Cleaning Instructions (H58307).

7) Confirm that the FFS has reset and is ready for
use by connecting it to the Probe Tester and
verifying that the LEDs do not flash until the
Red Button has been pushed.

8) The unit may now be returned to service.

RaychemTraceTek-IM-H59322-TTFS-EN-1810

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