FIRETRACE Direct Systems Manuale utente

Firetrace® “Direct” Automatic Fixed

Fire Suppression Systems

For Mobility Drive from Chair Applications

Please read instructions carefully

prior to starting installation

Issue 5 Nov 2017

Contents

•System Overview

•System Layout

•Cylinder Installation

•Trace Detection tube routing

•Trace Detection tube installation

•Trace Detection tube fixings

•Trace Detection tube bend radius

•Connecting the Trace Detection Tube

•Commissioning Instructions

•Optional Pressure Switch

•Servicing and Maintenance

System Overview.

The Fixed Firetrace® system is a simple self-actuating device that is designed to suppress fires

within an identified risk area. The cylinder is not intended for portable use.

The system works by using pressurised Firetrace® linear detection tubing that is installed

throughout the risk area. This tubing is heat sensitive and when subjected to a temperature

above 120 Degrees centigrade, or when touched by flame, the Firetrace® tubing will rupture

and form a diffuser.

Tube burst forming diffuser

The FE-36 extinguishant is then deployed via this diffuser directly into the heart of the fire.

The Firetrace® system requires no external power source or separate detectors and owing to

its simple design ensures that all of the extinguishant is always deployed in the risk area.

The system can be fitted with a volt free single pressure switch (FT0124) or volt free twin

pressure switch (FT0124/T75) which, when connected to the cylinder, not only provides

constant monitoring of the system but can also send a signal to indicate a discharge via a Self

contained Alarm Sounder (FT0178).

It is important that both the cylinder & Firetrace® tubing are correctly installed and that the

system is subjected to a regular maintenance regime in line with BS5306-3 by a competent

engineer.

FT0178 Self-Contained Alarm Sounder

System Layout

Optional Monitoring Pressure Switch

FT0124

Twin Contact Monitoring Switch also

available

FT0124/T75

All our standard low pressure Firetrace® systems are supplied with all the necessary fixings for

the Trace detection tube.

End of Line Charging adapter –

FT0118

Shall be located in a suitable

position on the dash board

Red trace detection tube –FT0115*

Isolate

Valve

behind

pressure

gauge

Optional Self-Contained Audible Sounder

FT0178

Self-Contained Strobe Sounder also

available

FT0178/SS

Firetrace® Installation Instructions.

Cylinder

When installing the Firetrace® system it is important that a suitable cylinder location is

selected and that the cylinder is orientated correctly.

The cylinder location shall be in a clean area away from direct heat. The cylinder

must not be placed in a location where the ambient temperature is above 80 Degrees

centigrade.

The cylinder shall be readily accessible to allow future servicing / inspections and as close as

practicable to the risk area.

The cylinder shall be adequately fixed to a suitable load bearing surface.

Wherever possible the cylinder shall be mounted vertically and in exceptional circumstances

the cylinder can positioned at an angle of no more than 80 Degrees from vertical. (see cylinder label

for clarity)

It is recommended wherever possible that Firetrace® cylinders be mounted vertically.

Where vertical locating is not possible the systems can be mounted within 80° of

vertical.

As indicated in the above drawing when cylinders are fitted at an angle the

gauge must face uppermost.

THIS FIRETRACE® SYSTEM IS SUITABLE FOR HORIZONTAL

MOUNTING.

✓

Cylinder Gauge

80° Max

Firetrace® Automatic Detection Tubing

The Firetrace® Automatic Detection tubing is the key part of the system and acts not only as the

detector but also as the delivery method for the FE-36.

The correct installation of the tubing is important to achieve optimum performance from the system.

The tubing must be mechanically protected outside the identified risk area and shall remain

accessible to allow future servicing.

As heat rises, the Firetrace® tubing is most efficient when mounted directly above the risk.

The tubing will activate at approximately 120 Degrees Centigrade and care must be taken to avoid

attaching the tubing where temperatures above this are achieved during normal operation.

It is recommended that the tube is a minimum of 150mm away from exceptionally hot surfaces or

fitted with additional sleeving to avoid false activation.

Tube Routing

As the Firetrace® detection tube is flexible the exact tube route can vary from vehicle to vehicle. The

basis of the system design is to circumnavigate the engine and dashboard area so that any potential

risks are covered. (Please see tube bending radius guide)

Trace Detection Tube installed around

the engine compartment

Trace Detection Tube located behind the

dashboard for extra protection

terminated at an End of Line Gauge

Firetrace® Cylinder

(Suitable for mounting up to 80° from vertical option)

Tube Fixings

The Firetrace® Automatic Detection tubing is the key part of the system and acts not only as the

detector but as the delivery method for the extinguishant as well.

The correct installation of the tubing is important to achieve optimum performance from the

system.

The detection tubing must be adequately fixed to retain its position and withstand the

vibration.

The tubing is a soft polymer and is susceptible to wear / chaffing when repeatedly rubbed

against a hard or sharp surface. The tubing shall be protected using nylon Kopex at all fixing

points and where it passes through holes.

The following photographs show both “Tyrap” and “P clip” fixings all of which are acceptable.

The Detection tubing shall be supported at maximum intervals of 150mm.

Always leave a small loop of tubing adjacent to the cylinder. Whilst this shall also be secured it

must be releasable to allow future servicing of the cylinder.

Where the tubing is installed with a group of other cables/pipes it must be positioned on the

underside of the loom and must never be located within the center of the loom.

The tubing must be physically protected outside the identified risk area using Kopex or

another flexible conduit and shall remain accessible to allow future servicing.

✓

Tube bending radius

The Firetrace® tubing acts as the detector and provides the delivery of the extinguishant. It is

imperative that the tubing is not kinked or crushed and the following minimum bending radius

must be adhered to.

Should the tubing be kinked or damaged in anyway then the Firetrace® tubing must be

replaced:

FT0115 Firetrace® tubing 6mm Minimum bending radius 60mm

Minimum Bend Radius

6mm tube = 60mm

Optimum Bend Radius

150mm

All compression fittings must be secured in the following manner:

a) Cut the tube end ensuring the cut is clean and free from burrs. Check that no debris/ swarf is

left in the tube.

b) Place the nut over the end of the tube with its threaded section towards the end of the tube.

c) Push the tube fully home into the body.

d) The nut shall be tightened finger tight and then using a 12mm Spanner pinched up to firm

hand tightness

e) Slacken off the assembly and inspect end to ensure flange has formed correctly then

reconnect and tighten down to ensure an effective seal.

Method of Assembly

1. Tubing must be cut off square.

2. Insert tubing into tubing nut.

3. Offer the tubing to the fitting so that the tubing bottoms on the tubing stop.

(this requires a firm push if cold)

4. Hold the tubing in contact with the tubing stop and screw the tubing nut down to

the recommended torque. (torque = 5.7 Nm)

5. Slacken off the assembly and inspect end to ensure flange has formed correctly then

reconnect to fitting and tighten down to ensure an effective seal.

✓

The use of a tube cutter (FT0127) is

recommended for an accurate cut of the

Trace Detection Tube.

Closed

Open

Commissioning the System

Warning Firetrace® cylinders contain 12 bar pressure

This procedure shall be read in conjunction with system layout earlier in this booklet.

Do not turn integrated isolate valve until system is fully commissioned (pressurised)

Locate cylinder and firmly secure with bracket provided

Remove black cap from the top of the cylinder. Connect red Trace detection tube, tighten silver nuts and

secure with appropriate clips

Remove blank plug from pressure switch port

Fit Schrader adapter FT0172 and pressurise to 12 Bar / 175 psi using a nitrogen bottle

or air pump.

Remove Schrader adapter FT0172, remove gauge from gauge

port and fit into pressure switch port. (Fit blanking plug into

Gauge port to keep dust and debris out)

Using tape, mark the location of the needle on the pressure gauge (Mid Green) and leave system for a

minimum of ten minutes per metre of Trace detection tube to check for any leaks on the detection

tube.

When satisfied pressure is good and no leaks have occurred, remove blank plug and open isolate valve

slowly using the key provided. Remove gauge from pressure switch port and fit into gauge port.

System is now live

Optional FT0124 pressure switch can be fitted in gauge adapter

on head assembly or if not pressure switch supplied, replace the blank

plug

Please note system will not operate with isolate

valve in closed position

Indice

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