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P.O. Box 8155, 104 20 STOCKHOLM, Sweden

phone +46-8-650 16 44 fax +46-8-551 180 87 - [email protected] - www.firemiks.com

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INSTALLATION GUIDE

Applies to:

FIREMIKS Sprinkler type

FIREMIKS Fixed type

FIREMIKS Demountable type

TABLE OF CONTENTS

1 Introduction........................................................................................ 22

Preconditions..................................................................................... 2

3 Working principle ............................................................................... 34 Installation Design ............................................................................. 45 Tables................................................................................................ 8

Appendix 1. Data sheet.

Appendix 2. Dimensional drawing.


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1 IntroductionThe purpose of this installation guide is to inform on the general needs for making agood installation with the FIREMIKS before our delivery to you.

This is NOT an instruction manual. The instruction manual follows with the

delivery of the FIREMIKS and if there is any doubt between the information in this

Installation Guide and the Instruction Manual, it is the Instruction Manual that is valid.

While we have done our best to control the content in this installation guide, the

content here is not binding or contractual in any way and serves merely as a

guideline of what to expect for installing a FIREMIKS unit. Please also check thatyou have the latest version, as we update our products regularly.

If you have to make critical decisions on the installation before receiving the

FIREMIKS, do not hesitate to double check with us to guarantee the latest and best

information.

2 Preconditions

2.1 As the user, you are responsible that the safety and operating instructions of anyother systems, environment or container where the FIREMIKS unit is installed arefollowed.

2.2 The unit must only be used under the working conditions specified. Any deviationfrom that requires the producers permission.

2.3 The unit is designed to dose fire-fighting liquids (=additives) in fire-fighting water.For all other applications, contact must be made with ARETEK AB for an approval,if possible to give such.

2.4 For information about each specific FIREMIKS model, working conditions,connection types, etc. please consult the respective data sheets.


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3 Working principle

3.1 FIREMIKS is designed with two displacement units direct coupled to each otherthrough a drive coupling. FIREMIKS dosing system is driven solely by theextinguishing water flow - no other additional energy is required.

The water flow from a main water pump goes through the FIREMIKS water motor.The power of the water flow generates a circular rotor motion, which is transferred to thegear pump over the direct drive coupling. The gear pump pumps foam concentrate intothe water motor outlet and where the water/foam solution is created. The admixtureratio is determined by the volumetric capacity of the foam pump vs. the water motor.

Since the water motor and the foam pump are directly connected with the drivecoupling, the system is by that flow-proportional. Dosing is automatically adjusted fromthe amount of water that goes through the FIREMIKS. Admixture ratios are valid whenusing foam liquids in the foam pump.

3.2 The FIREMIKS can be used with all common foam liquids/fire-fighting additives. Asfor example standard detergents, synthetic AFFF, AFFF-AR and protein based FP,FFFP and FFFP-AR. Should there be any questions and thoughts about differentadditives, please contact us and state additive type and brand.


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4 Installation Design

4.1 Key dimensions for each model can be found on the respective dimensionaldrawings.

4.2 FIREMIKS model types for installation

4.2.1 Fixed type

The FIREMIKS -F-type is designed for fixed installations to a foam tank. Equippedwith an automatic air relief valve to make it possible to suck foam liquid frombelow the unit. Flushing of foam pump is done automatically when foam inlet isclosed. Optional: Separate suction tube, suitable for fixed installations in forexample a fire truck, where there is a need for suction from an alternative foamsupply See 4.13 for more info.

4.2.2 Demountable type

A combination of Fixed and Mobile types. Quick-connect couplings added onwater motor in- and outlets and on connection to foam tank. A frame and handleis included and it may therefore also be used as a Mobile unit. Complete withseparate suction tube, flushing line and an automatic air relief valve.

4.2.3 Sprinkler type

The FIREMIKS -S-type is designed for sprinkler/foam nozzle-type installationsconnected to a foam tank placed above the unit. Note! Foam liquid shouldalways be present in foam pump by gravity-feed as there is no automatic airrelief valve on this Sprinkler type.

4.3 The unit should normally be mounted with the inlet and outlet of the water motorand the pump shaft in horizontal position. Other positions are possible but werecommend you to take contact with us first for guidance in these cases.

4.4 The FIREMIKS complete unit is designed to be held in place by using the mountingplane with four (six) threaded holes on the bottom of the water motor. See table 9.1for the key dimensions of the mounting interface. You will also need a supportunder the foam pump bracket to balance the weight but the support should not bebolted or fixed rigidly to the foam pump bracket, this is to avoid possible unwantedtensions. A support with a rubber mat or rubber feet is appropriate. TheDemountable type already has a skid mounted in this manner. For alternative waysof fixating the unit, contact us.

4.5 Install the unit with the connections pipes on the water motor in-and outlet.

4.5.1 It is very important that there are no movements on the water main line that couldcreate tensions through the connections onto the water motor. If any suchmovement exists on the connecting pipes, a separate support must be made tostabilise the connection pipes before connecting to the FIREMIKS.

4.6 Make sure there is enough space around the unit to enable easily accessibility forservice and maintenance.


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4.7 Temperature tolerances: the unit should preferably be installed in a frost-freeenvironment. If this is not possible it is important to drain the unit completely beforefrost season. It should not be exposed or used in higher temperature than 50degree Celsius. This is both valid for the ambient temperature, and for the watertemperature. Note! Be observant for direct solar radiation that can heat up theunit above 50 degrees. Contact us if higher temperature tolerance is needed!

4.8 The water flow must be in the direction shown by the arrow on the upper side of thewater motor. (Note! The direction of rotation of the drive shaft is reversed comparedwith the direction of the water flow arrow.). The unit can optionally be configuredwith the water flow in the opposite direction, in such case tell us when ordering. Seealso Appendix 2, Dimensional drawing.

4.9 The suction line should be connected to the Selector valve Foam Liquid/FlushingWater (No. 4 on Flow chart on Data sheet) on foam pump inlet. Connection typeand size is found on the respective data sheets for each model. Note! It is very

important that there are no air leakages anywhere between the tank and thefoam pump. The suction system should be pressure tested (preferably with amanual hand pump up to about 2 Bar) before the start, to expose possible airleakages.

4.10 Internal diameter on suction system should not be less than inlet diameter on theadditive pump. Avoid sharp 90-degree bends. Any other check valves, ball valves,etc. should also have at least the same internal diameter as the Selector valves.

4.11 It is advisable to put a transparent suction tube/hose just before the inlet of theadditive pump to make it easier to see when/if the suction tube is completely filledwith the fire-fighting additive. This also minimizes the risk for tensions from thesuction pipe to be transferred to the foam pump.

4.12 The below applies to Fixed and Demountable models:

4.12.1 We recommend that the foam tank lowest possible foam level is placedabove the inlet of the foam pump on this fixed type of FIREMIKS, becausethis makes the start of the suction immediate. In that case, you will need avalve in the suction line which is normally closed when the unit is not inuse, and which will open automatically when the systems starts. Otherwisethe foam will slowly leak through the Automatic air relief valves. Theselector valve present on the unit before the suction hose can be used forthis purpose.

4.12.2 You may also install the foam tank below the inlet of the foam pump. With

this installation you do not need the above described valve in the suctionline. The disadvantage is that the foam pump needs some seconds beforeit has pumped out all air through the Air relief valve (=priming) and suctionof foam liquids starts.

Note!NPSHR at the foam liquid inlet of the FIREMIKS at max waterflow and viscosity 35 cSt is approx. 6m. Priming capability and possiblesuction height depends on suction pipe design and associated losses, theviscosity of the foam liquids to be used and the water flows used at start-up(for priming). Always test your installation that priming of the foam pump ispossible in the working envelope required and that suction height (when thetank is almost empty) does not adversely affect the admixture rate.


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Instead of priming, it is possible to install a foot valve at the bottom of thesuction line, keeping the suction line filled with foam liquid once the systemis primed. However, this requires that the FIREMIKS needs to be manuallyprimed before it is stand-by.

4.13 This paragraph applies to Sprinkler models:

The lowest possible foam level in the foam tank must be above the inlet of thefoam pump on this Sprinkler type of FIREMIKS to ensure gravity feed of foamliquid.

4.14 The max. flow in the system should be checked with a flow meter if water sourcepumping capacity is higher than the max flow of the FIREMIKS. If there is a risk thatthe water flow could exceed the stated max. flow, there should be some kind of flowlimiter placed before the unit.

4.15 Even if the water source has a capacity equal or below the max flow capacity of theFIREMIKS, over-speeding can happen at the start if the main pipes are empty andthe flow-limiting parts are located after the unit. This risk for over-speeding could beminimized if the FIREMIKS and the piping are completely filled with water up to theflow-limiting parts. Not suddenly starting the main flow, but gently filling the pipingbefore the flow limiting parts, is also helpful to prevent over-speeding of theFIREMIKS. If there is a risk that the water flow could exceed the stated max. flow,there should be some kind of flow limiter placed before the unit.

4.16 In the case that the pressure capacity of the pumping system is higher than12 bar, it is recommended that a pressure-relief valve is installed in the mainsystem before the FIREMIKS.

4.17 Note! Before using a new piping system before the FIREMIKS, it must beflushed out well before the assembly of the FIREMIKS in the system. Thereare often foreign particles from the welding etc, left. Take care so other foreignparticles do not come into the unit during installation. Keep the protection caps andplugs on the unit on as long as possible.

4.18 FIREMIKS is designed to operate with clean water. No abrasive particles should bepresent in the water flow; otherwise it will wear much quicker. In most cases theFIREMIKS can cope with sporadic particles up to 2 mm size. If there is a risk ofparticles entering the FIREMIKS or when polluted or contaminated water is used,the piping system must be designed so that there is a suitable filter or strainerwhere this pollution can be collected fully, placed before the FIREMIKS. We refuseany responsibility for blockage of the water motor by any foreign objects in

the water, whatever their size.

4.19 If the installation is to operate for an extended period of time with extinguishingwater only, a by-pass with suitable valves should be installed around the FIREMIKSsystem to avoid unnecessary wear.

4.20 NOTE! As in all safety-related installations, there should always be a back-upplan. Never design the installation in such a way so that the water flowthrough the FIREMIKS is the only source for fire fighting water.


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4.21 NOTE! It is extremely important that a unique shut-off valve is installed beforethe FIREMIKS-unit. This is to ensure a risk-free service/maintenance, i.e. therisk for sudden rotation of the water motor due to unexpected water flow willbe eliminated by closing this valve. When working on the FIREMIKS, put aclear sign on this valve stating: Do not open, maintenance work inprogress.

4.22 For wet pipe systems it is recommended to install a drain valve after theFIREMIKS-unit with a capacity of about 100 - 200 lpm to facilitate the rotation of thewater motor during inspections.

4.23 Consider when installing that dry running of the FIREMIKS foam pump is notallowed.

4.24 Surrounding piping:

4.24.1 It is possible, with only one main water pump, to design the piping system sothere is plain water from some outlets in the system and at the same time additiveadmixed water from other outlets. The requirement is that the minimum andmaximum flow limits on the FIREMIKS are kept.

4.24.2 The hose/pipe system after the FIREMIKS can be divided in many different ways,also vary in heights, as long as the min. and max. flow limitations of theFIREMIKS are kept.

4.24.3 Different nozzles in the system after the FIREMIKS can be opened and closedindependently of each other without affecting the admixture, as long as the min.and max. limits in pressure and flow of the FIREMIKS are kept.

Do not hesitate to contact us if you have any questions regarding the installation ofthe FIREMIKS!


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5 Tables

5.1 Table 1: Mounting plane key dimensions.

FIREMIKSSize

Mounting planeperimeterA x B

Hole patternC x D

MountingholedimensionsM x depth E

Distancemounting planeto center lineconnectionpipes F

800 120 x 60 96 x 32 M10 x 20 80

1200 135 x 50 120 x 24 M10 x 25 141

1800 140 x 80 120 x 56 M12 x 25 1242400 155 x 80 140 x 52 M12 x 30 117

3200 155 x 130 132 x 84 M12 x 30 117

4000 155 x 160 132 x 132 M14 x 30 117

6000 180 x 140 140 x 100 M16 x 35 182

8000 180 x 200 140 x 150 M16 x 35 169

10000 190 x 200 70 x 70 x 160 M16 x 35(6 holes)

175

Doc: FM-INSTALLATION-GUIDE-2012-02-20

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